High-Field Fermi Surface Properties in the Low Carrier Heavy Fermion Compound URu2Si2

Abstract

We performed the Shubnikov-de Haas (SdH) experiments of the low carrier heavy fermion compound URu2Si2 at high fields up to 34T and at low temperatures down to 30mK. All main SdH branches named alpha, beta and gamma were observed for all the measured field-directions (H // [001] -> [100], [100] -> [110] and [001] -> [110]), indicating that these are attributed to the closed Fermi surfaces with nearly spherical shapes. Anomalous split of branch alpha was detected for the field along the basal plane, and the split immediately disappears by tilting the field to [001] direction, implying a fingerprint of the hidden order state. High field experiments reveal the complicated field-dependence of the SdH frequencies and the cyclotron masses due to the Zeeman spin-splitting associated with the Fermi surface reconstruction in the hidden order state with small carrier numbers. A new SdH branch named omega with large cyclotron mass of 25m0 was detected at high fields above 23T close to the hidden order instabilities.

6 pages, 7 figures, accepted for publication in J. Phys. Soc. Jpn

References in corpus (10)

• Rotational Symmetry Breaking in the Hidden-Order Phase of URu2Si2
• Exotic Superconducting Properties in the Electron-Hole Compensated Heavy Fermion `Semimetal' URu2Si2
• Gapped itinerant spin excitations account for missing entropy in the hidden order state of URu${}_2$Si${}_2$
• Similarity of Fermi Surface in the Hidden Order State and in the Antiferromagnetic State of URu2Si2
• Electronic structure theory of the hidden order material URu${}_2$Si${}_2$
• Inflection point in the magnetic field dependence of the ordered moment of URu2Si2 observed by neutron scattering in fields up to 17 T
• Possible Phase Transition Deep Inside the Hidden Order Phase of Ultraclean URu2Si2
• Details of Sample Dependence and Transport Properties of URu2Si2
• Interplay of magnetism, Fermi surface reconstructions, and hidden-order in the heavy-fermion material URu${}_2$Si${}_2$
• Antiferromagnetism and hot spots in CeIn${}_3$

Cited by in corpus (15)

• Hidden order and beyond: an experimental-theoretical overview of the multifaceted behavior of URu${}_2$Si${}_2$
• High-field moment polarization in the ferromagnetic superconductor UCoGe
• Field-induced spin-density wave beyond hidden order in URu2Si2
• Broken symmetries in URu2Si2
• Quantum-well states at the surface of the heavy-fermion superconductor URu${}_2$Si${}_2$
• Γ3-type Lattice Instability and the Hidden Order of URu2Si2
• Pressure-Induced Rotational Symmetry Breaking in URu${}_2$Si${}_2$
• Fermi Surface Reconstruction inside the Hidden Order Phase of URu2Si2 Probed by Thermoelectric Measurements
• Cyclotron resonance study of quasiparticle mass and scattering rate in the hidden-order and superconducting phases of URu2Si2
• 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${}_2$
• Collective spin resonance excitation in the gapped itinerant multipole hidden order phase of URu2Si2
• URu${}_2$Si${}_2$ under intense magnetic fields: from hidden order to spin-density wave
• Chiral superconductivity in nematic states
• Collinear antiferromagnetic order in URu${}_2$Si${}_{2-x}$P${}_x$ revealed by neutron diffraction