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14 papers · 2 filters
Strain-induced enhancement of electric quadrupole splitting in resistively detected nuclear magnetic resonance spectrum in quantum Hall systems
Minoru Kawamura, Tatsuya Yamashita, Hiroyuki Takahashi +4
We show electrical coherent manipulation of quadrupole-split nuclear spin states in a GaAs/AlGaAs heterostructure on the basis of the breakdown of quantum Hall effect. The electric…
Exact wave functions for an electron on a graphene triangular quantum dot
A. V. Rozhkov, Franco Nori
We generalize the known solution of the Schrödinger equation, describing a particle confined to a triangular area, for a triangular graphene quantum dot with armchair-type boundari…
The Z_2 network model for the quantum spin Hall effect: two-dimensional Dirac fermions, topological quantum numbers, and corner multifractality
Shinsei Ryu, Christopher Mudry, Hideaki Obuse +1
The quantum spin Hall effect shares many similarities (and some important differences) with the quantum Hall effect for the electric charge. As with the quantum (electric charge) H…
Topological insulators and superconductors: ten-fold way and dimensional hierarchy
Shinsei Ryu, Andreas Schnyder, Akira Furusaki +1
It has recently been shown that in every spatial dimension there exist precisely five distinct classes of topological insulators or superconductors. Within a given class, the diffe…
Coupling Remote States through the Continuum: Multi-State Fano Resonances
Y. Yoon, M. -G. Kang, T. Morimoto +6
We demonstrate a fully-tunable multi-state Fano system in which remotely-implemented quantum states interfere with each other through their coupling to a mutual continuum. On tunin…
Novel Radiation-induced Magnetoresistance Oscillations in a Nondegenerate 2DES on Liquid Helium
Denis Konstantinov, Kimitoshi Kono
We report the observation of novel magnetoresistance oscillations induced by the resonant inter-subband absorption in nondegenerate 2D electrons bound to the surface of liquid heli…