TY  - BOOK
AU  - 
ED  - SpringerLink (Online service)
TI  - Hidden Order and Exotic Superconductivity in the Heavy-Fermion Compound URu2Si2
T2  - Springer Theses, Recognizing Outstanding Ph.D. Research,
SN  - 9784431545927
AV  - QC611.9-611.98 
U1  - 530.41 23
PY  - 2013///
CY  - Tokyo
PB  - Springer Japan, Imprint: Springer
KW  - Physics
KW  - Optical materials
KW  - Strongly Correlated Systems, Superconductivity
KW  - Low Temperature Physics
KW  - Optical and Electronic Materials
N1  - Introduction -- Heavy-Fermion Superconductor URu2Si2 -- Magnetic torque Study on the Hidden-Order Phase -- Lower Critical Field Study on the Superconducting Phase -- Vortex Lattice Melting Transition -- Conclusion
N2  - In this thesis, the author investigates hidden-order phase transition at T0 = 17.5 K in the heavy-fermion URu2Si2. The four-fold rotational symmetry breaking in the hidden order phase, which imposes a strong constraint on the theoretical model, is observed through the magnetic torque measurement. The translationally invariant phase with broken rotational symmetry is interpreted as meaning that the hidden-order phase is an electronic ǣnematicǥ phase. The observation of such nematicity in URu2Si2 indicates a ubiquitous nature among the strongly correlated electron systems. The author also studies the superconducting state of URu2Si2 below Tc = 1.4 K, which coexists with the hidden-order phase. A peculiar vortex penetration in the superconducting state is found, which may be related to the rotational symmetry breaking in the hidden-order phase. The author also identifies a vortex lattice melting transition. This transport study provides essential clues to the underlying issue of quasiparticle dynamics as to whether a quasiparticle Bloch state is realized in the periodic vortex lattice
UR  - http://dx.doi.org/10.1007/978-4-431-54592-7
ER  -