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Bulk Fermi surface of charge-neutral excitations in SmB6 or not: a heat-transport study
Y. Xu, S. Cui, J. K. Dong +6
Recently there have been increasingly hot debates on whether a bulk Fermi surface of charge-neutral excitations exists in the topological Kondo insulator SmB6. To unambiguously res…
Anomalous reduction of the Lorenz ratio at the quantum critical point in YbAgGe
J. K. Dong, Y. Tokiwa, S. L. Bud'ko +2
We report measurements of the electrical and thermal transport on the hexagonal heavy-fermion metal YbAgGe for temperatures 40 mK and in magnetic fields up…
Unveiling the quantum critical point of an Ising chain
Y. F. Dai, H. Zhang, S. Y. Zhou +7
Quantum phase transitions occur at zero temperature upon variation of some nonthermal control parameters. The Ising chain in a transverse field is probably the most-studied model u…
Primary role of the barely occupied states in the charge density wave formation of NbSe2
D. W. Shen, Y. Zhang, L. X. Yang +13
NbSe2 is a prototypical charge-density-wave (CDW) material, whose mechanism remains mysterious so far. With angle resolved photoemission spectroscopy, we mapped out the CDW gap and…
Evolution of the Electronic Structure of 1T-CuxTiSe2
J. F. Zhao, H. W. Ou, G. Wu +11
The electronic structure of a new charge-density-wave/ superconductor system, 1T-CuxTiSe2, has been studied by photoemission spectroscopy. A correlated semiconductor band structure…
Far-infrared study of the insulator-metal transition in -(BEDT-TTF)RbZn(SCN)
N. L. Wang, H. Mori, S. Tanaka +2
The temperature-dependent infrared properties of -(BEDT-TTF)RbZn(SCN) were investigated. In the temperatures above the metal-insulator (M-I) transition, the optical cond…