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Photon-assisted tunneling through a topological superconductor with Majorana bound states.
- Source :
-
AIP Advances . 2015, Vol. 5 Issue 12, p127129-1-127129-7. 7p. - Publication Year :
- 2015
-
Abstract
- Employing the Keldysh Nonequilibrium Green's function method, we investigate time-dependent transport through a topological superconductor with Majorana bound states in the presence of a high frequency microwave field. It is found that Majorana bound states driven by photon-assisted tunneling can absorb(emit) photons and the resulting photon-assisted tunneling side band peaks can split the Majorana bound state that then appears at non-zero bias. This splitting breaks from the current opinion that Majorana bound states appear only at zero bias and thus provides a new experimental method for detecting Majorana bound states in the Non-zero-energy mode. We not only demonstrate that the photon-assisted tunneling side band peaks are due to Non-zero-energy Majorana bound states, but also that the height of the photon-assisted tunneling side band peaks is related to the intensity of the microwave field. It is further shown that the time-varying conductance induced by the Majorana bound states shows negative values for a certain period of time, which corresponds to a manifestation of the phase coherent time-varying behavior in mesoscopic systems. [ABSTRACT FROM AUTHOR]
- Subjects :
- *MAJORANA fermions
*TUNNEL magnetoresistance
*GREEN'S functions
Subjects
Details
- Language :
- English
- ISSN :
- 21583226
- Volume :
- 5
- Issue :
- 12
- Database :
- Academic Search Index
- Journal :
- AIP Advances
- Publication Type :
- Academic Journal
- Accession number :
- 112046930
- Full Text :
- https://doi.org/10.1063/1.4939096