Electronic structure of the quadrupolar ordered heavy-fermion compound YbRu2Ge2 measured by angle-resolved photoemission

Pfau, H.; Rosenberg, E. W.; Massat, P.; Moritz, B.; Hashimoto, M.; Lu, D.; Fisher, I. R.; Shen, Z. -X.

doi:10.1103/PhysRevB.99.075159

Title: Electronic structure of the quadrupolar ordered heavy-fermion compound ${YbRu}_{2} {Ge}_{2}$ measured by angle-resolved photoemission

Abstract

We studied the electronic structure of the heavy-fermion compound Yb(Ru_1–xRh_x)₂Ge₂ with x = 0 and nominally x = 0.125 using ARPES and LDA calculations. We find a valence band structure of Yb corresponding to a noninteger valence close to 3+. The three observed crystal electric field levels with a splitting of 32 and 75 meV confirm the suggested configuration with a quasiquartet ground state. The experimentally determined band structure of the conduction electrons with predominantly Ru 4d character is well reproduced by our calculations. YbRu₂Ge₂ undergoes a nonmagnetic phase transition into a ferroquadrupolar ordered state below 10.2 K and then to an antiferromagnetically ordered state below 6.5 K. A small hole Fermi surface shows nesting features in our calculated band structure and its size determined by ARPES is close to the magnetic ordering wave vector found in neutron scattering. The transitions are suppressed when YbRu₂Ge₂ is doped with 12.5% Rh. In conclusion, the electron doping leads to a shift of the band structure and successive Lifshitz transitions.

Authors:

Pfau, H. ^[1]; Rosenberg, E. W. ^[1]; Massat, P. ^[1]; Moritz, B. ^[2]; Hashimoto, M. ^[2]; Lu, D. ^[2]; Fisher, I. R. ^[1]; Shen, Z. -X. ^[1]

SLAC National Accelerator Lab., Menlo Park, CA (United States); Stanford Univ., Stanford, CA (United States)
SLAC National Accelerator Lab., Menlo Park, CA (United States)

Publication Date:: Fri Feb 15 00:00:00 EST 2019

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

Sponsoring Org.:: USDOE

OSTI Identifier:: 1497702

Alternate Identifier(s):: OSTI ID: 1546171

Grant/Contract Number:: GBMF4414; AC02-76SF00515

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review B

Additional Journal Information:: Journal Volume: 99; Journal Issue: 7; 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., Rosenberg, E. W., Massat, P., Moritz, B., Hashimoto, M., Lu, D., Fisher, I. R., and Shen, Z. -X. Electronic structure of the quadrupolar ordered heavy-fermion compound YbRu2Ge2 measured by angle-resolved photoemission.  United States: N. p., 2019. 
Web.  doi:10.1103/PhysRevB.99.075159.

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                    Pfau, H., Rosenberg, E. W., Massat, P., Moritz, B., Hashimoto, M., Lu, D., Fisher, I. R., & Shen, Z. -X. Electronic structure of the quadrupolar ordered heavy-fermion compound YbRu2Ge2 measured by angle-resolved photoemission.  United States.  https://doi.org/10.1103/PhysRevB.99.075159

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                    Pfau, H., Rosenberg, E. W., Massat, P., Moritz, B., Hashimoto, M., Lu, D., Fisher, I. R., and Shen, Z. -X. Fri .  
"Electronic structure of the quadrupolar ordered heavy-fermion compound YbRu2Ge2 measured by angle-resolved photoemission".  United States.  https://doi.org/10.1103/PhysRevB.99.075159.  https://www.osti.gov/servlets/purl/1497702.

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@article{osti_1497702,

  title        = {Electronic structure of the quadrupolar ordered heavy-fermion compound YbRu2Ge2 measured by angle-resolved photoemission},

  author       = {Pfau, H. and Rosenberg, E. W. and Massat, P. and Moritz, B. and Hashimoto, M. and Lu, D. and Fisher, I. R. and Shen, Z. -X.},

  abstractNote = {We studied the electronic structure of the heavy-fermion compound Yb(Ru1–xRhx)2Ge2 with x = 0 and nominally x = 0.125 using ARPES and LDA calculations. We find a valence band structure of Yb corresponding to a noninteger valence close to 3+. The three observed crystal electric field levels with a splitting of 32 and 75 meV confirm the suggested configuration with a quasiquartet ground state. The experimentally determined band structure of the conduction electrons with predominantly Ru 4d character is well reproduced by our calculations. YbRu2Ge2 undergoes a nonmagnetic phase transition into a ferroquadrupolar ordered state below 10.2 K and then to an antiferromagnetically ordered state below 6.5 K. A small hole Fermi surface shows nesting features in our calculated band structure and its size determined by ARPES is close to the magnetic ordering wave vector found in neutron scattering. The transitions are suppressed when YbRu2Ge2 is doped with 12.5% Rh. In conclusion, the electron doping leads to a shift of the band structure and successive Lifshitz transitions.},

  doi          = {10.1103/PhysRevB.99.075159},

  journal      = {Physical Review B},

  number       = 7,

  volume       = 99,

  place        = {United States},

  year         = {Fri Feb 15 00:00:00 EST 2019},

  month        = {Fri Feb 15 00:00:00 EST 2019}

}

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Works referenced in this record:

Quantum phase transitions in heavy fermion metals and Kondo insulators
journal, March 2013

Si, Qimiao; Paschen, Silke
physica status solidi (b), Vol. 250, Issue 3
DOI: 10.1002/pssb.201300005

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

Yi, M.; Lu, D.; Chu, J. -H.
Proceedings of the National Academy of Sciences, Vol. 108, Issue 17
DOI: 10.1073/pnas.1015572108

Momentum dependence of $4 f$ hybridization in heavy-fermion compounds: Angle-resolved photoemission study of ${YbIr}_{2} {Si}_{2}$ and ${YbRh}_{2} {Si}_{2}$
journal, January 2007

Danzenbächer, S.; Kucherenko, Yu.; Vyalikh, D. V.
Physical Review B, Vol. 75, Issue 4
DOI: 10.1103/PhysRevB.75.045109

Atomic subshell photoionization cross sections and asymmetry parameters: 1 ⩽ Z ⩽ 103
journal, January 1985

Yeh, J. J.; Lindau, I.
Atomic Data and Nuclear Data Tables, Vol. 32, Issue 1
DOI: 10.1016/0092-640X(85)90016-6

Theory of induced quadrupolar order in tetragonal $Yb {Ru}_{2} {Ge}_{2}$
journal, January 2008

Takimoto, Tetsuya; Thalmeier, Peter
Physical Review B, Vol. 77, Issue 4
DOI: 10.1103/PhysRevB.77.045105

Intermediate valence in Yb compounds probed by 4 $f$ photoemission and resonant inelastic x-ray scattering
journal, December 2011

Kummer, K.; Kucherenko, Yu.; Danzenbächer, S.
Physical Review B, Vol. 84, Issue 24
DOI: 10.1103/PhysRevB.84.245114

Quasiquartet crystal-electric-field ground state with possible quadrupolar ordering in the tetragonal compound $Yb {Ru}_{2} {Ge}_{2}$
journal, January 2006

Jeevan, H. S.; Geibel, C.; Hossain, Z.
Physical Review B, Vol. 73, Issue 2
DOI: 10.1103/PhysRevB.73.020407

Magnetic phase diagram of CeB6
journal, February 1985

Effantin, J. M.; Rossat-Mignod, J.; Burlet, P.
Journal of Magnetism and Magnetic Materials, Vol. 47-48
DOI: 10.1016/0304-8853(85)90382-8

Fermi-liquid instabilities at magnetic quantum phase transitions
journal, August 2007

Löhneysen, Hilbert v.; Rosch, Achim; Vojta, Matthias
Reviews of Modern Physics, Vol. 79, Issue 3
DOI: 10.1103/RevModPhys.79.1015

Calculated photoemission spectra of the 4f states in the rare-earth metals
journal, March 1983

Gerken, F.
Journal of Physics F: Metal Physics, Vol. 13, Issue 3
DOI: 10.1088/0305-4608/13/3/021

Kondo Effects and Multipolar Order in the Cubic Pr Tr ₂ Al ₂₀ ( Tr =Ti, V)
journal, June 2011

Sakai, Akito; Nakatsuji, Satoru
Journal of the Physical Society of Japan, Vol. 80, Issue 6
DOI: 10.1143/JPSJ.80.063701

Antiferroquadrupolar Ordering in a Pr-Based Superconductor ${PrIr}_{2} {Zn}_{20}$
journal, April 2011

Onimaru, T.; Matsumoto, K. T.; Inoue, Y. F.
Physical Review Letters, Vol. 106, Issue 17
DOI: 10.1103/PhysRevLett.106.177001

Surface shifts on rare earth metals
journal, May 1982

Gerken, F.; Barth, J.; Kammerer, R.
Surface Science, Vol. 117, Issue 1-3
DOI: 10.1016/0039-6028(82)90531-3

Kondo Lattice Effects of YbAl ₃ Suggested by Temperature Dependence of High-Accuracy High-Energy Photoelectron Spectroscopy
journal, November 2005

Suga, Shigemasa; Sekiyama, Akira; Imada, Shin
Journal of the Physical Society of Japan, Vol. 74, Issue 11
DOI: 10.1143/JPSJ.74.2880

Random strain fields on a molecular field system — Dilute thulium vanadate
journal, January 1976

Gehring, G. A.; Swithenby, S. J.; Wells, M. R.
Solid State Communications, Vol. 18, Issue 1
DOI: 10.1016/0038-1098(76)91394-6

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

Chu, J. -H.; Kuo, H. -H.; Analytis, J. G.
Science, Vol. 337, Issue 6095
DOI: 10.1126/science.1221713

Temperature-dependent microstructure of evaporated Yb surfaces
journal, May 1983

Schneider, Wolf-Dieter; Laubschat, Clemens; Reihl, Bruno
Physical Review B, Vol. 27, Issue 10
DOI: 10.1103/PhysRevB.27.6538

Orbital-driven nematicity in FeSe
journal, November 2014

Baek, S-H.; Efremov, D. V.; Ok, J. M.
Nature Materials, Vol. 14, Issue 2
DOI: 10.1038/nmat4138

Muon spin relaxation and neutron diffraction investigations of quadrupolar and magnetically ordered states of YbRu $_{2}$ Ge $_{2}$
journal, November 2011

Jeevan, H. S.; Adroja, D. T.; Hillier, A. D.
Physical Review B, Vol. 84, Issue 18
DOI: 10.1103/PhysRevB.84.184405

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

Avci, S.; Chmaissem, O.; Chung, D. Y.
Physical Review B, Vol. 85, Issue 18
DOI: 10.1103/PhysRevB.85.184507

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

Fernandes, R. M.; Chubukov, A. V.; Schmalian, J.
Nature Physics, Vol. 10, Issue 2
DOI: 10.1038/nphys2877

Tuning the dispersion of 4f bands in the heavy-fermion material YbRh2Si2
journal, July 2010

Vyalikh, Denis V.; Danzenbächer, Steffen; Krellner, Cornelius
Journal of Electron Spectroscopy and Related Phenomena, Vol. 181, Issue 1
DOI: 10.1016/j.elspec.2010.05.017

Simultaneous superconducting and antiferroquadrupolar transitions in PrRh $_{2}$ Zn $_{20}$
journal, November 2012

Onimaru, T.; Nagasawa, N.; Matsumoto, K. T.
Physical Review B, Vol. 86, Issue 18
DOI: 10.1103/PhysRevB.86.184426

Specific Heat Experiments at the Cooperative Jahn-Teller Transition in the Mixed Crystal Systems (Tbx, Tm1−x)AsO4 and (Tbx, Tm1−x)VO4
journal, November 1987

Kasten, A.; Kahle, H. G.; Klöfer, P.
physica status solidi (b), Vol. 144, Issue 1
DOI: 10.1002/pssb.2221440137

Core level shifts and valence change at the surface of intermetallic rare-earth systems
journal, March 1983

Kaindl, G.; Schneider, W. D.; Laubschat, C.
Surface Science, Vol. 126, Issue 1-3
DOI: 10.1016/0039-6028(83)90699-4

Multipole Orders and Fluctuations in Strongly Correlated Electron Systems
journal, July 2009

Kuramoto, Yoshio; Kusunose, Hiroaki; Kiss, Annamária
Journal of the Physical Society of Japan, Vol. 78, Issue 7
DOI: 10.1143/JPSJ.78.072001

De nouvelles séries de germaniures, isotypes de U4Re7Si6, ThCr2Si2 et CaBe2Ge2, dans les systèmes ternaires RTGe où R est un élément des terres rares et T ≡ Ru, Os, Rh, Ir: supraconductivité de LaIr2Ge2
journal, November 1985

Francois, M.; Venturini, G.; Marêché, J. F.
Journal of the Less Common Metals, Vol. 113, Issue 2
DOI: 10.1016/0022-5088(85)90281-4

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Title: Electronic structure of the quadrupolar ordered heavy-fermion compound YbRu 2 Ge 2 measured by angle-resolved photoemission

Abstract

Citation Formats

Quantum phase transitions in heavy fermion metals and Kondo insulators journal, March 2013

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

Momentum dependence of 4 f hybridization in heavy-fermion compounds: Angle-resolved photoemission study of YbIr 2 Si 2 and YbRh 2 Si 2 journal, January 2007

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Intermediate valence in Yb compounds probed by 4 f photoemission and resonant inelastic x-ray scattering journal, December 2011

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Magnetic phase diagram of CeB6 journal, February 1985

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Kondo Effects and Multipolar Order in the Cubic Pr Tr 2 Al 20 ( Tr =Ti, V) journal, June 2011

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Surface shifts on rare earth metals journal, May 1982

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Random strain fields on a molecular field system — Dilute thulium vanadate journal, January 1976

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

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Core level shifts and valence change at the surface of intermetallic rare-earth systems journal, March 1983

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Title: Electronic structure of the quadrupolar ordered heavy-fermion compound ${YbRu}_{2} {Ge}_{2}$ measured by angle-resolved photoemission

Quantum phase transitions in heavy fermion metals and Kondo insulators
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Symmetry-breaking orbital anisotropy observed for detwinned Ba(Fe1-xCox)2As2 above the spin density wave transition
journal, April 2011

Momentum dependence of $4 f$ hybridization in heavy-fermion compounds: Angle-resolved photoemission study of ${YbIr}_{2} {Si}_{2}$ and ${YbRh}_{2} {Si}_{2}$
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