ﻻ يوجد ملخص باللغة العربية
A spatially oscillating pair potential $Delta(r)=Delta_0 e^{2i Kcdot r}$ with momentum $K>Delta_0/hbar v$ drives a deconfinement transition of the Majorana bound states in the vortex cores of a Fu-Kane heterostructure (a 3D topological insulator with Fermi velocity $v$, on a superconducting substrate with gap $Delta_0$, in a perpendicular magnetic field). In the deconfined phase at zero chemical potential the Majorana fermions form a dispersionless Landau level, protected by chiral symmetry against broadening due to vortex scattering. The coherent superposition of electrons and holes in the Majorana Landau level is detectable as a local density of states oscillation with wave vector $sqrt{K^2-(Delta_0/hbar v)^2}$. The striped pattern also provides a means to measure the chirality of the Majorana fermions.
The combination of two-dimensional Dirac surface states with s-wave superconductivity is expected to generate localized topological Majorana zero modes in vortex cores. Putative experimental signatures of these modes have been reported for heterostru
The question whether the mixed phase of a gapless superconductor can support a Landau level is a celebrated problem in the context of textit{d}-wave superconductivity, with a negative answer: The scattering of the subgap excitations (massless Dirac f
A pair of Majorana zero modes (MZMs) constitutes a nonlocal qubit whose entropy is $log 2$. Upon strongly coupling one of the constituent MZMs to a reservoir with a continuous density of states, a universal entropy change of $frac{1}{2}log 2$ is expe
Motivated by recent experiments searching for Majorana fermions (MFs) in hybrid semiconducting-superconducting nanostructures, we consider a realistic tight-binding model and analyze its transport behavior numerically. In particular, we take into acc
Tunneling two level systems (TLS), present in dielectrics at low temperatures, have been recently studied for fundamental understanding and superconducting device development. According to a recent theory by Burin textit{et al.}, the TLS bath of any