Hall effect measurements on YbRh2Si2 and relatives in the light of electronic structure calculations

Abstract

We report experimental and theoretical investigations of the Hall effect in YbRh2Si2 and its reference compounds LuRh2Si2 and YbIr2Si2. Based on band-structure calculations we identify two bands dominating the Hall coefficient in all these compounds. For the case of LuRh2Si2 - the non-magnetic reference compound of YbRh2Si2 - the temperature dependence of the Hall coefficient is described quantitatively to arise from two hole-like bands. For YbIr2Si2 and YbRh2Si2, renormalized band calculations yield two bands of opposite character. In YbRh2Si2 these two bands almost compensate each other. We present strong indications that the sample dependences of the low-temperature Hall coefficient observed for YbRh2Si2 arise from slight variations of the relative scattering rates of the two bands. Minute changes of the composition appear to be the origin.

12 pages, 8 figures

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• The break up of heavy electrons at a quantum critical point
• Weak magnetism and non-Fermi liquids near heavy-fermion critical points
• Hall-effect evolution across a heavy-fermion quantum critical point
• Magnetic-Field Induced Quantum Critical Point in YbRh${}_2$Si${}_2$
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• Feedback spin resonance in superconducting CeCu${}_2$Si${}_2$ and CeCoIn${}_5$
• Magnetic-Field Dependence of the YbRh2Si2 Fermi Surface
• Energy scales of Lu(1-x)Yb(x)Rh2Si2 by means of thermopower investigations
• Anomalous f-electron Hall Effect in the Heavy-Fermion System CeTIn${}_5$ (T = Co, Ir, or Rh)
• Hall Number in YbRh2Si2
• Evolution of Hall coefficient in two-dimensional heavy fermion CeCoIn${}_5$
• Superconductivity in heavy fermion compounds
• The crossed-field and single-field Hall effect in LuRh2Si2

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• Magnetic Polarization and Fermi Surface Instability: Case of YbRh2Si2
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• Evidence for a Kondo destroying quantum critical point in YbRh2Si2
• New Universality Class of Quantum Criticality in Ce- and Yb-based Heavy Fermions
• Kondo destruction in a quantum paramagnet with magnetic frustration
• Lifshitz transitions and quasiparticle de-renormalization in YbRh${}_2$Si${}_2$
• The thermopower as a fingerprint of the Kondo breakdown quantum critical point
• Spin-flip scattering of critical quasiparticles and the phase diagram of YbRh2Si2
• Electronic Structure of LuRh2Si2: "Small" Fermi Surface Reference to YbRh2Si2
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• Non-Fermi liquid behavior and quantum criticality in cubic heavy fermion systems with non-Kramers multipolar local moments
• Quantum Critical Phase and Lifshitz Transition in an Extended Periodic Anderson Model
• Quantum impurity model for two-stage multipolar ordering and Fermi surface reconstruction
• Shubnikov-de Haas measurements on LuRh2Si2