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Chiral Rashba spin textures in ultra-cold Fermi gases
Jay D. Sau, Rajdeep Sensarma, Stephen Powell +2
Spin-orbit coupling is an important ingredient in many recently discovered phenomena such as the spin-Hall effect and topological insulators. Of particular interest is topological…
Controlling non-Abelian statistics of Majorana fermions on Majorana dimer lattices
Jay D. Sau, D. J. Clarke, S. Tewari
Under appropriate external conditions a semiconductor nanowire in proximity to an s-wave superconductor can be in a topological superconducting (TS) phase. This phase supports loca…
Topologically non-trivial superconductivity in spin-orbit coupled systems: Bulk phases and quantum phase transitions
Sumanta Tewari, Tudor D. Stanescu, Jay D. Sau +1
Topologically non-trivial superconductivity has been predicted to occur in superconductors with a sizable spin-orbit coupling in the presence of an external Zeeman splitting. Two s…
Quantum rotor theory of spinor condensates in tight traps
Ryan Barnett, Hoi-Yin Hui, Chien-Hung Lin +2
In this work, we theoretically construct exact mappings of many-particle bosonic systems onto quantum rotor models. In particular, we analyze the rotor representation of spinor Bos…
The Prediction of a Gapless Topological "Haldane Liquid" Phase in a One-Dimensional Cold Polar Molecular Lattice
J. P. Kestner, Bin Wang, Jay D. Sau +1
We show that ultracold two-component fermionic dipolar gases in an optical lattice with strong two-body on-site loss can be used to realize a tunable effective spin-one model. Ferm…
Anisotropic surface transport in topological insulators in proximity to a helical spin density wave
Qiuzi Li, Parag Ghosh, Jay D. Sau +2
We study the effects of spatially localized breakdown of time reversal symmetry on the surface of a topological insulator (TI) due to proximity to a helical spin density wave (HSDW…