Fermi Surface Reconstruction inside the Hidden Order Phase of URu2Si2 Probed by Thermoelectric Measurements

Abstract

We report thermoelectric measurements of the low carrier heavy fermion compound URu2Si2 at high fields up to 34T and at low temperatures down to 500mK. The field dependence of the thermoelectric power (TEP) and the Nernst signal shows successive anomalies deep inside the hidden order (HO) phase. The field position of these anomalies correspond to different changes in the Shubnikov-de Haas frequencies and effective masses around 12 T, 17 T, 23 T and 30 T. These results indicate successive reconstructions of the Fermi surface, which imply electronic phase transitions well within the HO phase.

6 pages, 6 figures

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Cited by in corpus (13)

• Field-induced spin-density wave beyond hidden order in URu2Si2
• Fermi-Surface Instabilities in the Heavy-Fermion Superconductor UTe2
• Collapse of ferromagnetism and Fermi surface instability near reentrant superconductivity of URhGe
• Lifshitz Transitions in the Ferromagnetic Superconductor UCoGe
• Fermi Surface Instabilities in Ferromagnetic Superconductor URhGe
• Lifshitz Transition and Metamagnetism: Thermoelectric Studies of CeRu${}_2$Si${}_2$
• Metamagnetic Transition in UCoAl Probed by Thermoelectricity Measurements
• Fermi surface in the hidden-order state of URu${}_2$Si${}_2$ under intense pulsed magnetic fields up to 81~T
• Fermi-Surface Selective Determination of the $\mathbf{g}$-Factor Anisotropy in URu${}_2$Si${}_2$
• Quantum criticality and Lifshitz transition in the Ising system CeRu2Si2: Comparison with YbRh2Si2
• URu${}_2$Si${}_2$ under intense magnetic fields: from hidden order to spin-density wave
• Universal behavior in the Nernst effect of heavy fermion materials
• One-dimensional moire charge density wave in the hidden order state of URu2Si2 induced by fracture