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Transport in two-dimensional modulation doped semiconductor structures
S. Das Sarma, E. H. Hwang, S. Kodiyalam +2
We develop a theory for the maximum achievable mobility in modulation-doped 2D GaAs-AlGaAs semiconductor structures by considering the momentum scattering of the 2D carriers by the…
Nearest neighbor tight binding models with an exact mobility edge in one dimension
Sriram Ganeshan, J. H. Pixley, S. Das Sarma
We investigate localization properties in a family of deterministic (i.e. no disorder) nearest neighbor tight binding models with quasiperiodic onsite modulation. We prove that thi…
Proximity-induced superconductivity and Josephson critical current in quantum spin Hall systems
Hoi-Yin Hui, Alejandro M. Lobos, Jay D. Sau +1
We consider recent experiments on wide superconductor-quantum spin Hall insulator (QSHI)-superconductor Josephson junctions, which have shown preliminary evidence of proximity-indu…
Majorana Fermions in Chiral Topological Ferromagnetic Nanowires
Eugene Dumitrescu, Brenden Roberts, Sumanta Tewari +2
Motivated by a recent experiment in which zero-bias peaks have been observed in scanning tunneling microscopy (STM) experiments performed on chains of magnetic atoms on a supercond…
Interacting Dirac liquid in three-dimensional semimetals
Johannes Hofmann, Edwin Barnes, S. Das Sarma
We study theoretically the properties of the interacting Dirac liquid, a novel three-dimensional many-body system which was recently experimentally realized and in which the electr…
Quantum multicriticality of bilayer graphene in the presence of a tunable energy gap
Robert E. Throckmorton, S. Das Sarma
We develop a theory for quantum phases and quantum multicriticality in bilayer graphene in the presence of an explicit energy gap in the non-interacting spectrum by extending previ…