Towards a realistic transport modeling in a superconducting nanowire with Majorana fermions
By Diego Rainis, Luka Trifunovic, J. Klinovaja, Daniel Loss. 2012
236 citations recorded by the source corpus.
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 account the presence of a superconducting contact, used in real experiments to extract the current, which is usually not included in theoretical calculations. We show that important features emerge that are absent in simpler models, such as the shift in energy of the proximity gap signal, and the enhanced visibility of the topological gap for increased spin-orbit interaction. We find oscillations of the zero bias peak as a function of the magnetic field and study them analytically. We argue that many of the experimentally observed features hint at an actual spin-orbit interaction larger than the one typically assumed. However, even taking into account all the known ingredients of the experiments and exploring many parameter regimes for MFs, we are not able to reach full agreement with the reported data. Thus, a different physical origin for the observed zero-bias peak cannot be excluded.
Subfields: Atomic and Molecular Physics, and Optics, Condensed Matter Physics
View Paper: https://www.semanticscholar.org/paper/815c90844c5be5fcb57ef998edfb2cd4596b513f
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In Atomic and Molecular Physics, and Optics
- K. Flensberg
- R. Lutchyn
- Charles M. Marcus
- P. Krogstrup
- Martin Leijnse
- E. Rossi
- A. Bargerbos
- A. Antipov
In Condensed Matter Physics
Citations in the corpus
- Effects of Gate-Induced Electric Fields on Semiconductor Majorana Nanowires (2018, background): “[85] Diego Rainis, Luka Trifunovic, Jelena Klinovaja, and Daniel Loss, “Towards a realistic transport modeling in a superconducting nanowire with Majorana fermions,””
- Majorana bound state in a coupled quantum-dot hybrid-nanowire system (2016, background): “As condensed-matter analogs of Majorana fermions— particles that are their own antiparticles [1]—Majorana bound states (MBSs) are anticipated to exhibit non-Abelian exchange statistics, providing a basis for naturally faulttolerant topological quantum computing [2-7].”