Effect of Controlled Artificial Disorder on the Magnetic Properties of EuFe2(As1–xPx)2 Ferromagnetic Superconductor

Ghimire, Sunil; Kończykowski, Marcin; Cho, Kyuil; Tanatar, Makariy A.; Torsello, Daniele; Veshchunov, Ivan S.; Tamegai, Tsuyoshi; Ghigo, Gianluca; Prozorov, Ruslan

doi:10.3390/ma14123267

Title: Effect of Controlled Artificial Disorder on the Magnetic Properties of EuFe₂(As_1–xP_x)₂ Ferromagnetic Superconductor

Abstract

Static (DC) and dynamic (AC, at 14 MHz and 8 GHz) magnetic susceptibilities of single crystals of a ferromagnetic superconductor, ${EuFe}_{2} {({As}_{1 - x} P_{x})}_{2}$ (x = 0.23), were measured in pristine state and after different doses of 2.5 MeV electron or 3.5 MeV proton irradiation. The superconducting transition temperature, $T_{c} (H)$ , shows an extraordinarily large decrease. It starts at $T_{c} (H = 0) \approx 24 K$ in the pristine sample for both AC and DC measurements, but moves to almost half of that value after moderate irradiation dose. Remarkably, after the irradiation not only $T_{c}$ moves significantly below the FM transition, its values differ drastically for measurements at different frequencies, ≈16 K in AC measurements and ≈12 K in a DC regime. We attribute such a large difference in $T_{c}$ to the appearance of the spontaneous internal magnetic field below the FM transition, so that the superconductivity develops directly into the mixed spontaneous vortex-antivortex state where the onset of diamagnetism is known to be frequency-dependent. We also examined the response to the applied DC magnetic fields and studied the annealing of irradiated samples, which almost completely restores the superconducting transition. Overall, our results suggest that in ${EuFe}_{2} {({As}_{1 - x} P_{x})}_{2}$ superconductivity is affected by local-moment ferromagnetism mostly via the spontaneous internal magnetic fields induced by the FM subsystem. Another mechanism is revealed upon irradiation where magnetic defects created in ordered ${Eu}^{2 +}$ lattice act as efficient pairbreakers leading to a significant $T_{c}$ reduction upon irradiation compared to other 122 compounds. On the other hand, the exchange interactions seem to be weakly screened by the superconducting phase leading to a modest increase of $T_{m}$ (less than 1 K) after the irradiation drives $T_{c}$ to below $T_{m}$ . Our results suggest that FM and SC phases coexist microscopically in the same volume.

Authors:

^[1];

^[2];

^[3];

^[1];

^[4];

^[5];

^[4];

^[1]

Ames Lab., and Iowa State Univ., Ames, IA (United States)
Ecole Polytechnique, Palaiseau (France)
Ames Lab., Ames, IA (United States)
Politecnico di Torino (Italy); Istituto Nazionale di Fisica Nucleare (INFN), Torino (Italy)
Univ. of Tokyo (Japan)

Publication Date:: Sun Jun 13 00:00:00 EDT 2021

Research Org.:: Ames Lab., Ames, IA (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; Italian Ministry of Education, University and Research; Japan Society for the Promotion of Science (JSPS)

OSTI Identifier:: 1809236

Report Number(s):: IS-J-10,525
Journal ID: ISSN 1996-1944

Grant/Contract Number:: AC02-07CH11358; 201785KWLE; 17H01141

Resource Type:: Accepted Manuscript

Journal Name:: Materials

Additional Journal Information:: Journal Volume: 14; Journal Issue: 12; Journal ID: ISSN 1996-1944

Publisher:: MDPI

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; tunnel diode resonator (TDR); coplanar waveguide resonator (CPWR); iron-based superconductors (IBS)

Citation Formats


                    Ghimire, Sunil, Kończykowski, Marcin, Cho, Kyuil, Tanatar, Makariy A., Torsello, Daniele, Veshchunov, Ivan S., Tamegai, Tsuyoshi, Ghigo, Gianluca, and Prozorov, Ruslan. Effect of Controlled Artificial Disorder on the Magnetic Properties of EuFe2(As1–xPx)2 Ferromagnetic Superconductor.  United States: N. p., 2021. 
Web.  doi:10.3390/ma14123267.

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                    Ghimire, Sunil, Kończykowski, Marcin, Cho, Kyuil, Tanatar, Makariy A., Torsello, Daniele, Veshchunov, Ivan S., Tamegai, Tsuyoshi, Ghigo, Gianluca, & Prozorov, Ruslan. Effect of Controlled Artificial Disorder on the Magnetic Properties of EuFe2(As1–xPx)2 Ferromagnetic Superconductor.  United States.  https://doi.org/10.3390/ma14123267

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                    Ghimire, Sunil, Kończykowski, Marcin, Cho, Kyuil, Tanatar, Makariy A., Torsello, Daniele, Veshchunov, Ivan S., Tamegai, Tsuyoshi, Ghigo, Gianluca, and Prozorov, Ruslan. Sun .  
"Effect of Controlled Artificial Disorder on the Magnetic Properties of EuFe2(As1–xPx)2 Ferromagnetic Superconductor".  United States.  https://doi.org/10.3390/ma14123267.  https://www.osti.gov/servlets/purl/1809236.

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@article{osti_1809236,

  title        = {Effect of Controlled Artificial Disorder on the Magnetic Properties of EuFe2(As1–xPx)2 Ferromagnetic Superconductor},

  author       = {Ghimire, Sunil and Kończykowski, Marcin and Cho, Kyuil and Tanatar, Makariy A. and Torsello, Daniele and Veshchunov, Ivan S. and Tamegai, Tsuyoshi and Ghigo, Gianluca and Prozorov, Ruslan},

  abstractNote = {Static (DC) and dynamic (AC, at 14 MHz and 8 GHz) magnetic susceptibilities of single crystals of a ferromagnetic superconductor, EuFe2(As1–xPx)2 (x = 0.23), were measured in pristine state and after different doses of 2.5 MeV electron or 3.5 MeV proton irradiation. The superconducting transition temperature, Tc(H), shows an extraordinarily large decrease. It starts at Tc(H=0)≈24K in the pristine sample for both AC and DC measurements, but moves to almost half of that value after moderate irradiation dose. Remarkably, after the irradiation not only Tc moves significantly below the FM transition, its values differ drastically for measurements at different frequencies, ≈16 K in AC measurements and ≈12 K in a DC regime. We attribute such a large difference in Tc to the appearance of the spontaneous internal magnetic field below the FM transition, so that the superconductivity develops directly into the mixed spontaneous vortex-antivortex state where the onset of diamagnetism is known to be frequency-dependent. We also examined the response to the applied DC magnetic fields and studied the annealing of irradiated samples, which almost completely restores the superconducting transition. Overall, our results suggest that in EuFe2(As1–xPx)2 superconductivity is affected by local-moment ferromagnetism mostly via the spontaneous internal magnetic fields induced by the FM subsystem. Another mechanism is revealed upon irradiation where magnetic defects created in ordered Eu2+ lattice act as efficient pairbreakers leading to a significant Tc reduction upon irradiation compared to other 122 compounds. On the other hand, the exchange interactions seem to be weakly screened by the superconducting phase leading to a modest increase of Tm (less than 1 K) after the irradiation drives Tc to below Tm. Our results suggest that FM and SC phases coexist microscopically in the same volume.},

  doi          = {10.3390/ma14123267},

  journal      = {Materials},

  number       = 12,

  volume       = 14,

  place        = {United States},

  year         = {Sun Jun 13 00:00:00 EDT 2021},

  month        = {Sun Jun 13 00:00:00 EDT 2021}

}

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Title: Effect of Controlled Artificial Disorder on the Magnetic Properties of EuFe2(As1–xPx)2 Ferromagnetic Superconductor

Abstract

Citation Formats

Anisotropic Superconducting and Magnetic Properties of a Single Crystal of Er Rh 4 B 4 journal, November 1982

Enhancement of superconducting transition temperature by pointlike disorder and anisotropic energy gap in FeSe single crystals journal, August 2016

Microwave analysis of the interplay between magnetism and superconductivity in EuFe 2 ( As 1 − x P x ) 2 single crystals journal, November 2019

Superconductivity in the quaternary intermetallic compounds LnNi2B2C journal, January 1994

Monte Carlo analysis of the oxygen knock-on effects induced by synchrotron x-ray radiation in the B i 2 S r 2 CaC u 2 O 8 + δ superconductor journal, January 2018

Disorder-induced transition between s ± and s + + states in two-band superconductors journal, November 2011

Evidence for Nodal Quasiparticles in Electron-Doped Cuprates from Penetration Depth Measurements journal, October 2000

Effect of strong scattering on the low-temperature penetration depth of a d -wave superconductor journal, August 1993

Pairing Mechanism in Fe-Based Superconductors journal, March 2012

The Specific Heat and Superconductivity of La-Y Alloys journal, July 1967

Superconductivity in Pure La and La-Gd journal, January 1965

Penetration depth of Ba 1 − x K x Fe 2 As 2 single crystals explained within a multiband Eliashberg s ± approach journal, July 2017

Precise measurements of radio-frequency magnetic susceptibility in ferromagnetic and antiferromagnetic materials journal, February 2008

Interband coupling and nonmagnetic interband scattering in ± s superconductors journal, June 2016

Manifesto for a higher Tc journal, April 2011

Vortices in high-temperature superconductors journal, October 1994

Destruction of superconductivity by magnetic ordering in Ho1.2Mo6S8 journal, July 1977

Effect of Electron Irradiation on Superconductivity in Single Crystals of Ba ( Fe 1 − x Ru x ) 2 As 2 ( x = 0.24 ) journal, November 2014

Comprehensive Eliashberg analysis of microwave conductivity and penetration depth of K-, Co-, and P-substituted BaFe 2 As 2 journal, April 2019

Effects of proton irradiation on the magnetic superconductor EuFe 2 (As 1 − x P x ) 2 journal, August 2020

Twofold role of columnar defects in iron based superconductors journal, August 2020

Magnetic relaxation in high-temperature superconductors journal, July 1996

Effect of magnetic and nonmagnetic impurities on highly anisotropic superconductivity journal, June 1997

Coexistence of superconductivity and ferromagnetism in P-doped EuFe 2 As 2 journal, January 2014

Eliashberg Analysis of the Electrodynamic Response of Ba(Fe1−xRhx)2As2 Across the s± to s++ Order Parameter Transition journal, December 2019

London penetration depth and strong pair breaking in iron-based superconductors journal, May 2010

Scaling laws for ion irradiation effects in iron-based superconductors journal, March 2021

Intrinsic magnetic properties of the superconductor NdFeAsO 0.9 F 0.1 from local and global measurements journal, March 2009

SRIM – The stopping and range of ions in matter (2010) journal, June 2010

Coexistence of ferromagnetism and superconductivity in ErRh4B4 and HoMo6S8: Exchange or electromagnetic mechanism? journal, April 1982

Antiferromagnetic superconductors journal, May 1986

Magnetic structure of the Eu 2 + moments in superconducting EuFe 2 ( As 1 − x P x ) 2 with x = 0.19 journal, September 2014

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

Impact of Disorder on the Superconducting Phase Diagram in BaFe 2 (As 1− x P x ) 2 journal, August 2017

Frequency dependence of the local ac magnetic response in type-II superconductors journal, November 1995

Ferromagnetic superconductors journal, January 2002

Domain Meissner state and spontaneous vortex-antivortex generation in the ferromagnetic superconductor EuFe 2 (As 0.79 P 0.21 ) 2 journal, July 2018

Interplay of local-moment ferromagnetism and superconductivity in ErRh 4 B 4 single crystals journal, March 2009

Disorder-induced topological change of the superconducting gap structure in iron pnictides journal, November 2014

Interplay between superconductivity and magnetism journal, October 1995

Gap symmetry and structure of Fe-based superconductors journal, October 2011

Iron-based superconductors, seven years later journal, June 2015

Self-induced magnetic flux structure in the magnetic superconductor RbEuFe 4 As 4 journal, April 2019

Vortex phase diagram of Ba ( Fe 0.93 Co 0.07 ) 2 As 2 single crystals journal, December 2008

London penetration depth in iron-based superconductors journal, September 2011

Nonmagnetic impurity effects and neutron scattering spectrum in iron pnictides journal, November 2010

Superconductivity-driven helical magnetic structure in EuRbFe 4 As 4 ferromagnetic superconductor journal, September 2019

Tuning the Intrinsic Anisotropy with Disorder in the Ca K Fe 4 As 4 Superconductor journal, June 2020

Theory of Magnetic Domain Phases in Ferromagnetic Superconductors journal, March 2019

Magnetic superconductors journal, December 1984

Review of U-based Ferromagnetic Superconductors: Comparison between UGe 2 , URhGe, and UCoGe journal, February 2019

Theory of dirty superconductors journal, September 1959

Upper critical field of the pressure-induced superconductor EuFe 2 As 2 journal, March 2011

Coexistence of long-range magnetic order and superconductivity from Campbell penetration depth measurements journal, January 2009

Enhancement of T c by disorder in underdoped iron pnictide superconductors journal, April 2012

Suppression of superconducting parameters by correlated quasi-two-dimensional magnetic fluctuations journal, August 2020

Orbital upper critical field of type-II superconductors with pair breaking journal, July 2013

Helical structures in layered magnetic superconductors due to indirect exchange interactions mediated by interlayer tunneling journal, December 2019

Symmetry-unprotected nodes or gap minima in the s + + state of monocrystalline FeSe journal, October 2017

Anisotropic upper critical field of pristine and proton-irradiated single crystals of the magnetically ordered superconductor RbEuFe 4 As 4 journal, August 2019

Robust s ± pairing in CaK ( Fe 1 − x Ni x ) 4 As 4 ( x = 0 and 0.05) from the response to electron irradiation journal, April 2018

Superconductivity Induced by Phosphorus Doping and Its Coexistence with Ferromagnetism in EuFe 2 ( As 0.7 P 0.3 ) 2 journal, April 2009

Critical temperature of an anisotropic superconductor containing both nonmagnetic and magnetic impurities journal, October 1998

Ferromagnetic Superconductors journal, December 1958

Magnetic detwinning and biquadratic magnetic interaction in Eu Fe 2 As 2 revealed by Eu 153 NMR journal, November 2020

Impurity effects in d -wave superconductors journal, March 1995

The superconductive critical temperature and the electronic specific heat of impur1e tin journal, January 1957

Coexistence of superconductivity and magnetism theoretical predictions and experimental results journal, January 1985

Superconductivity and ferromagnetism in hole-doped RbEuFe 4 As 4 journal, June 2016

Magnetism and superconductivity in rare earth–nickel–borocarbides journal, January 2006

FeAs-Based Superconductivity: A Case Study of the Effects of Transition Metal Doping on BaFe 2 As 2 journal, August 2010

Using controlled disorder to distinguish s ± and s + + gap structure in Fe-based superconductors journal, March 2013

Superconductivity under a ferromagnetic molecular field journal, July 1984

Disorder, critical currents, and vortex pinning energies in isovalently substituted BaFe 2 (As 1 − x P x ) 2 journal, March 2013

Effects of disorder induced by heavy-ion irradiation on (Ba1−x K x )Fe2As2 single crystals, within the three-band Eliashberg s± wave model journal, October 2017

Measurements of the absolute value of the penetration depth in high-Tc superconductors using a low-Tc superconductive coating journal, December 2000

Electron irradiation effects on superconductivity in PdTe 2 : An application of a generalized Anderson theorem journal, May 2020

Title: Effect of Controlled Artificial Disorder on the Magnetic Properties of EuFe₂(As_1–xP_x)₂ Ferromagnetic Superconductor

Anisotropic Superconducting and Magnetic Properties of a Single Crystal of Er ${Rh}_{4}$ $B_{4}$
journal, November 1982

Enhancement of superconducting transition temperature by pointlike disorder and anisotropic energy gap in FeSe single crystals
journal, August 2016

Microwave analysis of the interplay between magnetism and superconductivity in ${EuFe}_{2} {({As}_{1 - x} P_{x})}_{2}$ single crystals
journal, November 2019

Superconductivity in the quaternary intermetallic compounds LnNi2B2C
journal, January 1994

Monte Carlo analysis of the oxygen knock-on effects induced by synchrotron x-ray radiation in the $B i_{2} S r_{2} CaC u_{2} O_{8 + δ}$ superconductor
journal, January 2018

Disorder-induced transition between $s_{\pm}$ and $s_{+ +}$ states in two-band superconductors
journal, November 2011

Evidence for Nodal Quasiparticles in Electron-Doped Cuprates from Penetration Depth Measurements
journal, October 2000

Effect of strong scattering on the low-temperature penetration depth of a d -wave superconductor
journal, August 1993

Pairing Mechanism in Fe-Based Superconductors
journal, March 2012

The Specific Heat and Superconductivity of La-Y Alloys
journal, July 1967

Superconductivity in Pure La and La-Gd
journal, January 1965

Penetration depth of ${Ba}_{1 - x} K_{x} {Fe}_{2} {As}_{2}$ single crystals explained within a multiband Eliashberg $s \pm$ approach
journal, July 2017

Precise measurements of radio-frequency magnetic susceptibility in ferromagnetic and antiferromagnetic materials
journal, February 2008

Interband coupling and nonmagnetic interband scattering in $\pm s$ superconductors
journal, June 2016

Manifesto for a higher Tc
journal, April 2011

Vortices in high-temperature superconductors
journal, October 1994

Destruction of superconductivity by magnetic ordering in Ho1.2Mo6S8
journal, July 1977

Effect of Electron Irradiation on Superconductivity in Single Crystals of $Ba ({Fe}_{1 - x} {Ru}_{x})_{2} {As}_{2}$ ( $x = 0.24$ )
journal, November 2014

Comprehensive Eliashberg analysis of microwave conductivity and penetration depth of K-, Co-, and P-substituted ${BaFe}_{2} {As}_{2}$
journal, April 2019

Effects of proton irradiation on the magnetic superconductor EuFe ₂ (As _{1 − x} P _x ) ₂
journal, August 2020

Twofold role of columnar defects in iron based superconductors
journal, August 2020

Magnetic relaxation in high-temperature superconductors
journal, July 1996

Effect of magnetic and nonmagnetic impurities on highly anisotropic superconductivity
journal, June 1997

Coexistence of superconductivity and ferromagnetism in P-doped ${EuFe}_{2} {As}_{2}$
journal, January 2014

Eliashberg Analysis of the Electrodynamic Response of Ba(Fe1−xRhx)2As2 Across the s± to s++ Order Parameter Transition
journal, December 2019

London penetration depth and strong pair breaking in iron-based superconductors
journal, May 2010

Scaling laws for ion irradiation effects in iron-based superconductors
journal, March 2021

Intrinsic magnetic properties of the superconductor NdFeAsO _0.9 F _0.1 from local and global measurements
journal, March 2009

SRIM – The stopping and range of ions in matter (2010)
journal, June 2010

Coexistence of ferromagnetism and superconductivity in ErRh4B4 and HoMo6S8: Exchange or electromagnetic mechanism?
journal, April 1982

Antiferromagnetic superconductors
journal, May 1986

Magnetic structure of the ${Eu}^{2 +}$ moments in superconducting ${EuFe}_{2} {({As}_{1 - x} P_{x})}_{2}$ with $x = 0.19$
journal, September 2014

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

Impact of Disorder on the Superconducting Phase Diagram in BaFe ₂ (As ₁₋ _x P _x ) ₂
journal, August 2017

Frequency dependence of the local ac magnetic response in type-II superconductors
journal, November 1995

Ferromagnetic superconductors
journal, January 2002

Domain Meissner state and spontaneous vortex-antivortex generation in the ferromagnetic superconductor EuFe ₂ (As _0.79 P _0.21 ) ₂
journal, July 2018

Interplay of local-moment ferromagnetism and superconductivity in ErRh ₄ B ₄ single crystals
journal, March 2009

Disorder-induced topological change of the superconducting gap structure in iron pnictides
journal, November 2014

Interplay between superconductivity and magnetism
journal, October 1995

Gap symmetry and structure of Fe-based superconductors
journal, October 2011

Iron-based superconductors, seven years later
journal, June 2015

Self-induced magnetic flux structure in the magnetic superconductor ${RbEuFe}_{4} {As}_{4}$
journal, April 2019

Vortex phase diagram of $Ba {({Fe}_{0.93} {Co}_{0.07})}_{2} {As}_{2}$ single crystals
journal, December 2008

London penetration depth in iron-based superconductors
journal, September 2011

Nonmagnetic impurity effects and neutron scattering spectrum in iron pnictides
journal, November 2010

Superconductivity-driven helical magnetic structure in EuRbFe 4 As 4 ferromagnetic superconductor
journal, September 2019

Tuning the Intrinsic Anisotropy with Disorder in the ${Ca K Fe}_{4} {As}_{4}$ Superconductor
journal, June 2020

Theory of Magnetic Domain Phases in Ferromagnetic Superconductors
journal, March 2019

Magnetic superconductors
journal, December 1984

Review of U-based Ferromagnetic Superconductors: Comparison between UGe ₂ , URhGe, and UCoGe
journal, February 2019

Theory of dirty superconductors
journal, September 1959

Upper critical field of the pressure-induced superconductor EuFe $_{2}$ As $_{2}$
journal, March 2011

Coexistence of long-range magnetic order and superconductivity from Campbell penetration depth measurements
journal, January 2009

Enhancement of $T_{c}$ by disorder in underdoped iron pnictide superconductors
journal, April 2012

Suppression of superconducting parameters by correlated quasi-two-dimensional magnetic fluctuations
journal, August 2020

Orbital upper critical field of type-II superconductors with pair breaking
journal, July 2013

Helical structures in layered magnetic superconductors due to indirect exchange interactions mediated by interlayer tunneling
journal, December 2019

Symmetry-unprotected nodes or gap minima in the $s_{+ +}$ state of monocrystalline FeSe
journal, October 2017

Anisotropic upper critical field of pristine and proton-irradiated single crystals of the magnetically ordered superconductor ${RbEuFe}_{4} {As}_{4}$
journal, August 2019

Robust $s_{\pm}$ pairing in $CaK {({Fe}_{1 - x} {Ni}_{x})}_{4} {As}_{4}$ ( $x = 0$ and 0.05) from the response to electron irradiation
journal, April 2018

Superconductivity Induced by Phosphorus Doping and Its Coexistence with Ferromagnetism in ${EuFe}_{2} ({As}_{0.7} P_{0.3})_{2}$
journal, April 2009

Critical temperature of an anisotropic superconductor containing both nonmagnetic and magnetic impurities
journal, October 1998

Ferromagnetic Superconductors
journal, December 1958

Magnetic detwinning and biquadratic magnetic interaction in $Eu {Fe}_{2} {As}_{2}$ revealed by ${}^{153}{Eu}$ NMR
journal, November 2020

Impurity effects in d -wave superconductors
journal, March 1995

The superconductive critical temperature and the electronic specific heat of impur1e tin
journal, January 1957

Coexistence of superconductivity and magnetism theoretical predictions and experimental results
journal, January 1985

Superconductivity and ferromagnetism in hole-doped ${RbEuFe}_{4} {As}_{4}$
journal, June 2016

Magnetism and superconductivity in rare earth–nickel–borocarbides
journal, January 2006

FeAs-Based Superconductivity: A Case Study of the Effects of Transition Metal Doping on BaFe ₂ As ₂
journal, August 2010

Using controlled disorder to distinguish $s_{\pm}$ and $s_{+}_{+}$ gap structure in Fe-based superconductors
journal, March 2013

Superconductivity under a ferromagnetic molecular field
journal, July 1984

Disorder, critical currents, and vortex pinning energies in isovalently substituted BaFe $_{2}$ (As $_{1 - x}$ P $_{x}$ ) $_{2}$
journal, March 2013

Effects of disorder induced by heavy-ion irradiation on (Ba1−x K x )Fe2As2 single crystals, within the three-band Eliashberg s± wave model
journal, October 2017

Measurements of the absolute value of the penetration depth in high-Tc superconductors using a low-Tc superconductive coating
journal, December 2000

Electron irradiation effects on superconductivity in ${PdTe}_{2}$ : An application of a generalized Anderson theorem
journal, May 2020

Electronic nematicity revealed by torque magnetometry in $Eu {Fe}_{2} ({As}_{1 - x} P_{x})_{2}$
journal, March 2014

Quasiparticle scattering in 3 MeV proton irradiated ${BaFe}_{2} {({As}_{0.67} P_{0.33})}_{2}$
journal, August 2018