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5 papers · 2 filters
A Majorana smoking gun for the superconductor-semiconductor hybrid topological system
S. Das Sarma, Jay D. Sau, Tudor D. Stanescu
Recent observations of a zero bias conductance peak in tunneling transport measurements in superconductor--semiconductor nanowire devices provide evidence for the predicted zero--e…
An investigation into the feasibility of myoglobin-based single-electron transistors
Debin Li, Peter M. Gannet, David Lederman
Myoglobin single-electron transistors were investigated using nanometer- gap platinum electrodes fabricated by electromigration at cryogenic temperatures. Apomyoglobin (myoglobin w…
Disentangling Majorana fermions from conventional zero energy states in semiconductor quantum wires
T. D. Stanescu, Sumanta Tewari
Majorana fermions (MFs) are predicted to occur as zero-energy bound states in semiconductor nanowire-superconductor structures. However, in the presence of disorder or smooth confi…
To close or not to close: the fate of the superconducting gap across the topological quantum phase transition in Majorana-carrying semiconductor nanowires
Tudor D. Stanescu, Sumanta Tewari, Jay D. Sau +1
We investigate theoretically the low energy physics of semiconductor Majorana wires in the vicinity of a magnetic field-driven topological quantum phase transition (TQPT). The loca…
Topological minigap in quasi-one-dimensional spin-orbit-coupled semiconductor Majorana wires
Sumanta Tewari, T. D. Stanescu, J. D. Sau +1
The excitation gap above the Majorana fermion (MF) modes at the ends of 1D topological superconducting (TS) semiconductor wires scales with the bulk quasiparticle gap E_{qp}. This…