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5 papers · 2 filters
Rashba-Dirac cones at the tungsten surface: Insights from a tight-binding model and thin film subband structure
George Kirczenow
A tight-binding model of bcc tungsten that includes spin-orbit coupling is developed and applied to the surface states of (110) tungsten thin films. The model describes accurately…
Note on "Quantum superconducting criticality in graphene and topological insulators"
Bitan Roy, Vladimir Juricic, Igor F. Herbut
We correct our previous conclusion regarding the fate of a charged quantum critical point across the superconducting transition for two dimensional massless Dirac fermion. Within t…
Atomic defect states in monolayers of MoS and WS
Saboura Salehi, Alireza Saffarzadeh
The influence of atomic vacancy defects at different concentrations on electronic properties of MoS and WS monolayers is studied by means of Slater-Koster tight-binding mod…
Longitudinal spin-relaxation of donor-bound electrons in direct bandgap semiconductors
Todd Karin, Xiayu Linpeng, M. V. Durnev +6
We measure the donor-bound electron longitudinal spin-relaxation time () as a function of magnetic field () in three high-purity direct-bandgap semiconductors: GaAs, InP, a…
Half vortex and fractional electrical charge in two dimensions
Bitan Roy, Igor F. Herbut
Despite fermion doubling, a two-dimensional quasi-relativistic spin-1/2 system can still lead to true fractionalization of electrical charge, when a massive ordered phase supports…