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84 papers · 1 filter
Surface electronic structure of the topological Kondo insulator candidate correlated electron system SmB6
Madhab Neupane, Nasser Alidoust, SuYang Xu +15
The Kondo insulator SmB6 has long been known to exhibit low temperature transport anomalies whose origin is of great interest. Here we uniquely access the surface electronic struct…
Microwave spectroscopic observation of distinct electron solid phases in wide quantum wells
A. T. Hatke, Yang Liu, B. A. Magill +6
In high magnetic fields (), two dimensional electron systems (2DESs) can form a number of phases in which interelectron repulsion plays the central role, since the kinetic energ…
Multigap superconductivity in locally non-centrosymmetric SrPtAs: An As nuclear quadrupole resonance investigation
F. Brückner, R. Sarkar, M. Günther +9
We report detailed As-NQR investigations of the locally non-centrosymmetric superconductor SrPtAs. The spin-lattice relaxation studies prove weakly coupled multi-gap superco…
Fermi-Edge Superfluorescence from a Quantum-Degenerate Electron-Hole Gas
J. -H. Kim, G. T. Noe, S. A. McGill +4
We report on the observation of spontaneous bursts of coherent radiation from a quantum-degenerate gas of nonequilibrium electron-hole pairs in semiconductor quantum wells. Unlike…
Acoustoelectric effects in very high-mobility -SiGe/Ge/SiGe heterostructure at low temperatures in high magnetic fields
I. L. Drichko, V. A. Malysh, I. Yu. Smirnov +4
The contactless Surface Acoustic Wave (SAW) technique was implemented to probe the high-frequency (ac) conductivity in a high-mobility -SiGe/Ge/SiGe structure in the integer qua…
Kondo Destruction and Quantum Criticality in Kondo Lattice Systems
Qimiao Si, J. H. Pixley, Emilian Nica +4
Considerable efforts have been made in recent years to theoretically understand quantum phase transitions in Kondo lattice systems. A particular focus is on Kondo destruction, whic…