Detailed band structure of twinned and detwinned BaFe2As2 studied with angle-resolved photoemission spectroscopy

Pfau, H.; Rotundu, C. R.; Palmstrom, J. C.; Chen, S. D.; Hashimoto, M.; Lu, D.; Kemper, A. F.; Fisher, I. R.; Shen, Z. -X.

doi:10.1103/physrevb.99.035118

Title: Detailed band structure of twinned and detwinned ${BaFe}_{2} {As}_{2}$ studied with angle-resolved photoemission spectroscopy

Abstract

We study the band structure of twinned and detwinned BaFe₂As₂ using angle-resolved photoemission spectroscopy. The combination of measurements in the ordered and normal states along four high-symmetry momentum directions Γ/Z-X/Y enables us to identify the complex reconstructed band structure in the ordered state in great detail. We clearly observe the nematic splitting of the d_xz and d_yz orbitals as well as folding due to magnetic order with a wave vector of (π,π,π) . We are able to assign all observed bands. In particular we suggest an assignment of the electron bands different from previous reports. The high-quality spectra allow us to achieve a comprehensive understanding of the band structure of BaFe₂As₂.

Authors:

Pfau, H. ^[1]; Rotundu, C. R. ^[2]; Palmstrom, J. C. ^[3]; Chen, S. D. ^[4]; Hashimoto, M. ^[5]; Lu, D. ^[5]; Kemper, A. F. ^[6]; Fisher, I. R. ^[3]; Shen, Z. -X. ^[7]

SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Institute for Materials and Energy Science (SIMES); Stanford Univ., CA (United States). Dept. of Physics
SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Institute for Materials and Energy Science (SIMES)
SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Institute for Materials and Energy Science (SIMES); Stanford Univ., CA (United States). Geballe Lab. for Advanced Materials, Dept. of Applied Physics
Stanford Univ., CA (United States). Geballe Lab. for Advanced Materials, Dept. of Applied Physics
SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Synchrotron Radiation Lightsource (SSRL)
North Carolina State Univ., Raleigh, NC (United States). Dept. of Physics
SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Institute for Materials and Energy Science (SIMES); Stanford Univ., CA (United States). Dept. of Physics; Stanford Univ., CA (United States). Geballe Lab. for Advanced Materials, Dept. of Applied Physics

Publication Date:: Wed Jan 09 00:00:00 EST 2019

Research Org.:: SLAC National Accelerator Lab., Menlo Park, CA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1493333

Alternate Identifier(s):: OSTI ID: 1490149

Grant/Contract Number:: DGE-114747; AC02-76SF00515

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review B

Additional Journal Information:: Journal Volume: 99; Journal Issue: 3; Journal ID: ISSN 2469-9950

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats


                    Pfau, H., Rotundu, C. R., Palmstrom, J. C., Chen, S. D., Hashimoto, M., Lu, D., Kemper, A. F., Fisher, I. R., and Shen, Z. -X. Detailed band structure of twinned and detwinned BaFe2As2 studied with angle-resolved photoemission spectroscopy.  United States: N. p., 2019. 
Web.  doi:10.1103/physrevb.99.035118.

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                    Pfau, H., Rotundu, C. R., Palmstrom, J. C., Chen, S. D., Hashimoto, M., Lu, D., Kemper, A. F., Fisher, I. R., & Shen, Z. -X. Detailed band structure of twinned and detwinned BaFe2As2 studied with angle-resolved photoemission spectroscopy.  United States.  https://doi.org/10.1103/physrevb.99.035118

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                    Pfau, H., Rotundu, C. R., Palmstrom, J. C., Chen, S. D., Hashimoto, M., Lu, D., Kemper, A. F., Fisher, I. R., and Shen, Z. -X. Wed .  
"Detailed band structure of twinned and detwinned BaFe2As2 studied with angle-resolved photoemission spectroscopy".  United States.  https://doi.org/10.1103/physrevb.99.035118.  https://www.osti.gov/servlets/purl/1493333.

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@article{osti_1493333,

  title        = {Detailed band structure of twinned and detwinned BaFe2As2 studied with angle-resolved photoemission spectroscopy},

  author       = {Pfau, H. and Rotundu, C. R. and Palmstrom, J. C. and Chen, S. D. and Hashimoto, M. and Lu, D. and Kemper, A. F. and Fisher, I. R. and Shen, Z. -X.},

  abstractNote = {We study the band structure of twinned and detwinned BaFe2As2 using angle-resolved photoemission spectroscopy. The combination of measurements in the ordered and normal states along four high-symmetry momentum directions Γ/Z-X/Y enables us to identify the complex reconstructed band structure in the ordered state in great detail. We clearly observe the nematic splitting of the dxz and dyz orbitals as well as folding due to magnetic order with a wave vector of (π,π,π) . We are able to assign all observed bands. In particular we suggest an assignment of the electron bands different from previous reports. The high-quality spectra allow us to achieve a comprehensive understanding of the band structure of BaFe2As2.},

  doi          = {10.1103/physrevb.99.035118},

  journal      = {Physical Review B},

  number       = 3,

  volume       = 99,

  place        = {United States},

  year         = {Wed Jan 09 00:00:00 EST 2019},

  month        = {Wed Jan 09 00:00:00 EST 2019}

}

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Works referencing / citing this record:

Probing the reconstructed Fermi surface of antiferromagnetic BaFe2As2 in one domain
journal, July 2019

Watson, Matthew D.; Dudin, Pavel; Rhodes, Luke C.
npj Quantum Materials, Vol. 4, Issue 1
DOI: 10.1038/s41535-019-0174-z

Direct observation of a uniaxial stress-driven Lifshitz transition in Sr2RuO4
journal, August 2019

Sunko, Veronika; Abarca Morales, Edgar; Marković, Igor
npj Quantum Materials, Vol. 4, Issue 1
DOI: 10.1038/s41535-019-0185-9

Spin fluctuation anisotropy as a probe of orbital-selective hole-electron quasiparticle excitations in detwinned $Ba {({Fe}_{1 - x} {Co}_{x})}_{2} {As}_{2}$
journal, October 2019

Tian, Long; Liu, Panpan; Xu, Zhuang
Physical Review B, Vol. 100, Issue 13
DOI: 10.1103/physrevb.100.134509

Probing the reconstructed Fermi surface of antiferromagnetic $BaFe_{2}As_{2}$ in one domain
text, January 2019

Watson, Matthew D.; Dudin, Pavel; Rhodes, Luke C.
Deutsches Elektronen-Synchrotron, DESY, Hamburg
DOI: 10.3204/pubdb-2019-05602

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We report results of Raman scattering experiments on twin-free BaFe₂ As₂ with the main focus placed on understanding the influence of electronic and spin degrees of freedom on the lattice dynamics. In particular, we scrutinize the Eg modes and the As A_1g mode. Each of the two Eg phonons in the tetragonal phase is observed to split into a B_2g and a B_3g mode upon entering the orthorhombic stripe-magnetic phase. The splitting amounts to approximately 10 cm^-1 and less than 5 cm^-1 for the low- and the high-energy E_g mode, respectively. The detailed study of the fully symmetric As modemore »« less
Cited by 11
https://doi.org/10.1103/physrevb.98.075113

Full Text Available
Raman scattering study of spin-density-wave-induced anisotropic electronic properties in $A {Fe}_{2} {As}_{2}$ ( $A = Ca$ , Eu)

Journal Article Zhang, W. -L. ; Yin, Z. P. ; Ignatov, A. ; ... - Physical Review B

We present a polarization-resolved and temperature-dependent Raman scattering study of AFe₂As₂ (A = Ca, Eu). In the spin-density-wave phase, spectral weight redistribution is observed in the fully symmetric and nonsymmetric scattering channels at different energies. An anisotropic Raman response is observed in the fully symmetric channel in spontaneously detwinned CaFe₂As₂ samples. We calculate the orbital-resolved electronic structures using a combination of density functional theory and dynamical mean field theory. We identify the electronic transitions corresponding to these two spectral features and find that the anisotropic Raman response originates from the lifted degeneracy of the d_xz/yz orbitals in the broken-symmetry phase.
https://doi.org/10.1103/PhysRevB.93.205106
Nematicity in the superconducting mixed state of strain detwinned underdoped Ba( ${Fe}_{1 - x} {Co}_{x})_{2} {As}_{2}$

Journal Article Schmidt, J. ; Bekeris, V. ; Lozano, G. S. ; ... - Physical Review B

Evidence of nematic effects in the mixed superconducting phase of slightly underdoped Ba ( Fe_{1 - x} Co_x)₂As₂ is reported. We have found strong in-plane resistivity anisotropy for crystals in different strain conditions. For these compositions, there is no magnetic long-range order, so the description may be ascribed to the interplay between the superconducting and nematic order parameters. A piezoelectric-based apparatus is used to apply tensile or compressive strain to tune nematic domain orientation in order to examine intrinsic nematicity. Measurements are done under a rotating magnetic field, and the analysis of the angular dependence of physical quantities identifies themore »« less
Cited by 3
https://doi.org/10.1103/PhysRevB.99.064515

Full Text Available

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Title: Detailed band structure of twinned and detwinned BaFe 2 As 2 studied with angle-resolved photoemission spectroscopy

Abstract

Citation Formats

Tunneling spectroscopy for probing orbital anisotropy in iron pnictides journal, November 2013

Symmetry-breaking orbital anisotropy observed for detwinned Ba(Fe1-xCox)2As2 above the spin density wave transition journal, April 2011

Determination of the phase diagram of the electron-doped superconductor Ba ( Fe 1 − x Co x ) 2 As 2 journal, January 2009

Neutron-Diffraction Measurements of Magnetic Order and a Structural Transition in the Parent BaFe 2 As 2 Compound of FeAs-Based High-Temperature Superconductors journal, December 2008

Interface-induced superconductivity and strain-dependent spin density waves in FeSe/SrTiO3 thin films journal, May 2013

Droplet-like Fermi surfaces in the anti-ferromagnetic phase of EuFe 2 As 2 , an Fe-pnictide superconductor parent compound journal, January 2010

Unconventional electronic reconstruction in undoped ( Ba , Sr ) Fe 2 As 2 across the spin density wave transition journal, November 2009

Electronic structure of detwinned BaFe 2 As 2 from photoemission and first principles journal, February 2011

Evidence for a Lifshitz transition in electron-doped iron arsenic superconductors at the onset of superconductivity journal, May 2010

Orbital Selective Fermi Surface Shifts and Mechanism of High T c Superconductivity in Correlated A FeAs ( A = Li , Na) journal, October 2012

A Quantum Critical Point Lying Beneath the Superconducting Dome in Iron Pnictides journal, March 2014

Nesting between hole and electron pockets in Ba ( Fe 1 − x Co x ) 2 As 2 ( x = 0 – 0.3 ) observed with angle-resolved photoemission journal, October 2009

Momentum-dependent sign inversion of orbital order in superconducting FeSe journal, November 2015

One-Fe versus Two-Fe Brillouin Zone of Fe-Based Superconductors: Creation of the Electron Pockets by Translational Symmetry Breaking journal, December 2011

Orbital-dependent Fermi surface shrinking as a fingerprint of nematicity in FeSe journal, October 2016

Unexpected Fermi-surface nesting in the pnictide parent compounds BaFe 2 As 2 and CaFe 2 As 2 revealed by angle-resolved photoemission spectroscopy journal, February 2010

Distinctive orbital anisotropy observed in the nematic state of a FeSe thin film journal, September 2016

Orbital-Selective Mott Phase in Multiorbital Models for Alkaline Iron Selenides K 1 − x Fe 2 − y Se 2 journal, April 2013

Divergent Nematic Susceptibility in an Iron Arsenide Superconductor journal, August 2012

Electronic Structure and Unusual Exchange Splitting in the Spin-Density-Wave State of the BaFe 2 As 2 Parent Compound of Iron-Based Superconductors journal, March 2009

Phase diagram of Ba 1 − x K x Fe 2 As 2 journal, May 2012

High-temperature superconductivity in iron-based materials journal, August 2010

Symmetry-broken electronic structure and uniaxial Fermi surface nesting of untwinned CaFe 2 As 2 journal, December 2013

Interaction-induced singular Fermi surface in a high-temperature oxypnictide superconductor journal, May 2015

Orbital-Dependent Modifications of Electronic Structure across the Magnetostructural Transition in BaFe 2 As 2 journal, February 2010

Effect of nematic ordering on electronic structure of FeSe journal, November 2016

Coherence–incoherence crossover in the normal state of iron oxypnictides and importance of Hund's rule coupling journal, February 2009

Character of the structural and magnetic phase transitions in the parent and electron-doped BaFe 2 As 2 compounds journal, April 2011

Reconstruction of Band Structure Induced by Electronic Nematicity in an FeSe Superconductor journal, December 2014

Electronic structure of the iron-based superconductor LaOFeP journal, September 2008

In-plane electronic anisotropy of underdoped ‘122’ Fe-arsenide superconductors revealed by measurements of detwinned single crystals journal, September 2011

Impact of the two Fe unit cell on the electronic structure measured by ARPES in iron pnictides journal, August 2012

Electronic anisotropies revealed by detwinned angle-resolved photo-emission spectroscopy measurements of FeSe journal, October 2017

Angle-resolved photoemission spectroscopy study of PrFeAsO 0 . 7 : Comparison with LaFePO journal, July 2011

Angle-resolved photoemission study of the role of nesting and orbital orderings in the antiferromagnetic phase of BaFe 2 As 2 journal, July 2011

Observation of Dirac Cone Electronic Dispersion in BaFe 2 As 2 journal, March 2010

Orbital characters of bands in the iron-based superconductor BaFe 1.85 Co 0.15 As 2 journal, February 2011

Fe-based superconductors: an angle-resolved photoemission spectroscopy perspective journal, November 2011

Large Temperature Dependence of the Number of Carriers in Co-Doped BaFe 2 As 2 journal, April 2013

Band-structure reorganization across the magnetic transition in BaFe 2 As 2 seen via high-resolution angle-resolved photoemission journal, October 2009

Kinetic frustration and the nature of the magnetic and paramagnetic states in iron pnictides and iron chalcogenides journal, September 2011

(π, π) electronic order in iron arsenide superconductors journal, January 2009

First- and second-order magnetic and structural transitions in BaFe 2 ( 1 − x ) Co 2 x As 2 journal, September 2011

Observation of two distinct d x z / d y z band splittings in FeSe journal, June 2015

Fermi-Surface Shrinking and Interband Coupling in Iron-Based Pnictides journal, July 2009

Lifting of xz / yz orbital degeneracy at the structural transition in detwinned FeSe journal, September 2014

Role of the orbital degree of freedom in iron-based superconductors journal, October 2017

Orbital character variation of the Fermi surface and doping dependent changes of the dimensionality in BaFe 2 − x Co x As 2 from angle-resolved photoemission spectroscopy journal, March 2010

What drives nematic order in iron-based superconductors? journal, January 2014

Heat capacity study of BaFe 2 As 2 : Effects of annealing journal, October 2010

Existence, Character, and Origin of Surface-Related Bands in the High Temperature Iron Pnictide Superconductor BaFe 2 − x Co x As 2 journal, January 2011

Evidence for unidirectional nematic bond ordering in FeSe journal, November 2016

Piezoelectric-based apparatus for strain tuning journal, June 2014

Orbital nature of the hole-like Fermi surface in superconducting Ba(Fe 1 − x Co x ) 2 As 2 journal, February 2011

Effect of nematic ordering on electronic structure of FeSe text, January 2016

Interaction-induced singular Fermi surface in a high-temperature oxypnictide superconductor text, January 2015

Interaction-induced singular Fermi surface in a high-temperature oxypnictide superconductor other, January 2015

(pi,pi)-electronic order in iron arsenide superconductors text, January 2008

The orbital characters of bands in iron-based superconductor BaFe1.85Co0.15As2 text, January 2009

Orbital character variation of the Fermi surface and doping dependent changes of the dimensionality in BaFe2-xCoxAs2 from angle-resolved photoemission spectroscopy text, January 2009

Droplet-like Fermi surfaces in the anti-ferromagnetic phase of EuFe$_2$As$_2$, an Fe-pnictide superconductor parent compound text, January 2009

High-temperature superconductivity in iron-based materials text, January 2010

Kinetic frustration and the nature of the magnetic and paramagnetic states in iron pnictides and iron chalcogenides text, January 2011

Large temperature dependence of the number of carriers in Co-doped BaFe2As2 text, January 2013

Quantum critical point lying beneath the superconducting dome in iron-pnictides text, January 2013

Piezoelectric-based apparatus for strain tuning text, January 2014

Reconstruction of Band Structure Induced by Electronic Nematicity in an FeSe Superconductor text, January 2014

Lifting of xz/yz orbital degeneracy at the structural transition in detwinned FeSe text, January 2014

Emergence of the nematic electronic state in FeSe text, January 2015

Effect of nematic ordering on electronic structure of FeSe text, January 2016

Probing the reconstructed Fermi surface of antiferromagnetic BaFe2As2 in one domain journal, July 2019

Direct observation of a uniaxial stress-driven Lifshitz transition in Sr2RuO4 journal, August 2019

Spin fluctuation anisotropy as a probe of orbital-selective hole-electron quasiparticle excitations in detwinned Ba ( Fe 1 − x Co x ) 2 As 2 journal, October 2019

Probing the reconstructed Fermi surface of antiferromagnetic $BaFe_{2}As_{2}$ in one domain text, January 2019

Title: Detailed band structure of twinned and detwinned ${BaFe}_{2} {As}_{2}$ studied with angle-resolved photoemission spectroscopy

Tunneling spectroscopy for probing orbital anisotropy in iron pnictides
journal, November 2013

Symmetry-breaking orbital anisotropy observed for detwinned Ba(Fe1-xCox)2As2 above the spin density wave transition
journal, April 2011

Determination of the phase diagram of the electron-doped superconductor $Ba {({Fe}_{1 - x} {Co}_{x})}_{2} {As}_{2}$
journal, January 2009

Neutron-Diffraction Measurements of Magnetic Order and a Structural Transition in the Parent ${BaFe}_{2} {As}_{2}$ Compound of FeAs-Based High-Temperature Superconductors
journal, December 2008

Interface-induced superconductivity and strain-dependent spin density waves in FeSe/SrTiO3 thin films
journal, May 2013

Droplet-like Fermi surfaces in the anti-ferromagnetic phase of EuFe ₂ As ₂ , an Fe-pnictide superconductor parent compound
journal, January 2010

Unconventional electronic reconstruction in undoped $(Ba, Sr) {Fe}_{2} {As}_{2}$ across the spin density wave transition
journal, November 2009

Electronic structure of detwinned BaFe $_{2}$ As $_{2}$ from photoemission and first principles
journal, February 2011

Evidence for a Lifshitz transition in electron-doped iron arsenic superconductors at the onset of superconductivity
journal, May 2010

Orbital Selective Fermi Surface Shifts and Mechanism of High $T_{c}$ Superconductivity in Correlated $A FeAs$ ( $A = Li$ , Na)
journal, October 2012

A Quantum Critical Point Lying Beneath the Superconducting Dome in Iron Pnictides
journal, March 2014

Nesting between hole and electron pockets in $Ba {({Fe}_{1 - x} {Co}_{x})}_{2} {As}_{2}$ $(x = 0 - 0.3)$ observed with angle-resolved photoemission
journal, October 2009

Momentum-dependent sign inversion of orbital order in superconducting FeSe
journal, November 2015

One-Fe versus Two-Fe Brillouin Zone of Fe-Based Superconductors: Creation of the Electron Pockets by Translational Symmetry Breaking
journal, December 2011

Orbital-dependent Fermi surface shrinking as a fingerprint of nematicity in FeSe
journal, October 2016

Unexpected Fermi-surface nesting in the pnictide parent compounds ${BaFe}_{2} {As}_{2}$ and ${CaFe}_{2} {As}_{2}$ revealed by angle-resolved photoemission spectroscopy
journal, February 2010

Distinctive orbital anisotropy observed in the nematic state of a FeSe thin film
journal, September 2016

Orbital-Selective Mott Phase in Multiorbital Models for Alkaline Iron Selenides $K_{1 - x} {Fe}_{2 - y} {Se}_{2}$
journal, April 2013

Divergent Nematic Susceptibility in an Iron Arsenide Superconductor
journal, August 2012

Electronic Structure and Unusual Exchange Splitting in the Spin-Density-Wave State of the ${BaFe}_{2} {As}_{2}$ Parent Compound of Iron-Based Superconductors
journal, March 2009

Phase diagram of Ba $_{1 - x}$ K $_{x}$ Fe $_{2}$ As $_{2}$
journal, May 2012

High-temperature superconductivity in iron-based materials
journal, August 2010

Symmetry-broken electronic structure and uniaxial Fermi surface nesting of untwinned CaFe $_{2}$ As $_{2}$
journal, December 2013

Interaction-induced singular Fermi surface in a high-temperature oxypnictide superconductor
journal, May 2015

Orbital-Dependent Modifications of Electronic Structure across the Magnetostructural Transition in ${BaFe}_{2} {As}_{2}$
journal, February 2010

Effect of nematic ordering on electronic structure of FeSe
journal, November 2016

Coherence–incoherence crossover in the normal state of iron oxypnictides and importance of Hund's rule coupling
journal, February 2009

Character of the structural and magnetic phase transitions in the parent and electron-doped BaFe $_{2}$ As $_{2}$ compounds
journal, April 2011

Reconstruction of Band Structure Induced by Electronic Nematicity in an FeSe Superconductor
journal, December 2014

Electronic structure of the iron-based superconductor LaOFeP
journal, September 2008

In-plane electronic anisotropy of underdoped ‘122’ Fe-arsenide superconductors revealed by measurements of detwinned single crystals
journal, September 2011

Impact of the two Fe unit cell on the electronic structure measured by ARPES in iron pnictides
journal, August 2012

Electronic anisotropies revealed by detwinned angle-resolved photo-emission spectroscopy measurements of FeSe
journal, October 2017

Angle-resolved photoemission spectroscopy study of PrFeAsO $_{0.7}$ : Comparison with LaFePO
journal, July 2011

Angle-resolved photoemission study of the role of nesting and orbital orderings in the antiferromagnetic phase of BaFe $_{2}$ As $_{2}$
journal, July 2011

Observation of Dirac Cone Electronic Dispersion in ${BaFe}_{2} {As}_{2}$
journal, March 2010

Orbital characters of bands in the iron-based superconductor BaFe $_{1.85}$ Co $_{0.15}$ As $_{2}$
journal, February 2011

Fe-based superconductors: an angle-resolved photoemission spectroscopy perspective
journal, November 2011

Large Temperature Dependence of the Number of Carriers in Co-Doped ${BaFe}_{2} {As}_{2}$
journal, April 2013

Band-structure reorganization across the magnetic transition in ${BaFe}_{2} {As}_{2}$ seen via high-resolution angle-resolved photoemission
journal, October 2009

Kinetic frustration and the nature of the magnetic and paramagnetic states in iron pnictides and iron chalcogenides
journal, September 2011

(π, π) electronic order in iron arsenide superconductors
journal, January 2009

First- and second-order magnetic and structural transitions in BaFe $_{2 (1 - x)}$ Co $_{2 x}$ As $_{2}$
journal, September 2011

Observation of two distinct $d_{x z}$ / $d_{y z}$ band splittings in FeSe
journal, June 2015

Fermi-Surface Shrinking and Interband Coupling in Iron-Based Pnictides
journal, July 2009

Lifting of xz / yz orbital degeneracy at the structural transition in detwinned FeSe
journal, September 2014

Role of the orbital degree of freedom in iron-based superconductors
journal, October 2017

Orbital character variation of the Fermi surface and doping dependent changes of the dimensionality in ${BaFe}_{2 - x} {Co}_{x} {As}_{2}$ from angle-resolved photoemission spectroscopy
journal, March 2010

What drives nematic order in iron-based superconductors?
journal, January 2014

Heat capacity study of ${BaFe}_{2} {As}_{2}$ : Effects of annealing
journal, October 2010

Existence, Character, and Origin of Surface-Related Bands in the High Temperature Iron Pnictide Superconductor ${BaFe}_{2 - x} {Co}_{x} {As}_{2}$
journal, January 2011

Evidence for unidirectional nematic bond ordering in FeSe
journal, November 2016

Piezoelectric-based apparatus for strain tuning
journal, June 2014

Orbital nature of the hole-like Fermi surface in superconducting Ba(Fe $_{1 - x}$ Co $_{x}$ ) $_{2}$ As $_{2}$
journal, February 2011

Effect of nematic ordering on electronic structure of FeSe
text, January 2016

Interaction-induced singular Fermi surface in a high-temperature oxypnictide superconductor
text, January 2015

Interaction-induced singular Fermi surface in a high-temperature oxypnictide superconductor
other, January 2015

(pi,pi)-electronic order in iron arsenide superconductors
text, January 2008

The orbital characters of bands in iron-based superconductor BaFe1.85Co0.15As2
text, January 2009

Orbital character variation of the Fermi surface and doping dependent changes of the dimensionality in BaFe2-xCoxAs2 from angle-resolved photoemission spectroscopy
text, January 2009

Droplet-like Fermi surfaces in the anti-ferromagnetic phase of EuFe$_2$As$_2$, an Fe-pnictide superconductor parent compound
text, January 2009

High-temperature superconductivity in iron-based materials
text, January 2010

Kinetic frustration and the nature of the magnetic and paramagnetic states in iron pnictides and iron chalcogenides
text, January 2011

Large temperature dependence of the number of carriers in Co-doped BaFe2As2
text, January 2013

Quantum critical point lying beneath the superconducting dome in iron-pnictides
text, January 2013

Piezoelectric-based apparatus for strain tuning
text, January 2014

Reconstruction of Band Structure Induced by Electronic Nematicity in an FeSe Superconductor
text, January 2014

Lifting of xz/yz orbital degeneracy at the structural transition in detwinned FeSe
text, January 2014

Emergence of the nematic electronic state in FeSe
text, January 2015

Effect of nematic ordering on electronic structure of FeSe
text, January 2016

Probing the reconstructed Fermi surface of antiferromagnetic BaFe2As2 in one domain
journal, July 2019

Direct observation of a uniaxial stress-driven Lifshitz transition in Sr2RuO4
journal, August 2019

Spin fluctuation anisotropy as a probe of orbital-selective hole-electron quasiparticle excitations in detwinned $Ba {({Fe}_{1 - x} {Co}_{x})}_{2} {As}_{2}$
journal, October 2019

Probing the reconstructed Fermi surface of antiferromagnetic $BaFe_{2}As_{2}$ in one domain
text, January 2019