Transport through a Majorana Island in the Strong Tunneling Regime
Abstract
In the presence of Rashba spin-orbit coupling, a magnetic field can drive a proximitized nanowire into a topological superconducting phase [R. M. Lutchyn, J. D. Sau, and S. Das Sarma, Phys. Rev. Lett. 105, 077001 (2010). and Y. Oreg, G. Refael, and F. von Oppen, Phys. Rev. Lett. 105, 177002 (2010).]. We study the transport properties of such nanowires in the Coulomb blockade regime. The associated with topological superconductivity Majorana modes significantly modify transport and lead to single-electron coherent transmission through the nanowire—a nonlocal signature of topological superconductivity. In this Letter, we focus on the case of strong hybridization of the Majorana modes with normal leads. The induced by hybridization broadening of the Majorana zero-energy states competes with the charging energy, leading to a considerable modification of the Coulomb blockade in a nanowire contacted by two normal leads. We evaluate the two-terminal conductance as a function of the gate voltage, junctions transmission coefficients, and the geometric capacitance of and the induced superconducting gap in the nanowire.
- Authors:
-
- Microsoft Research, Santa Barbara, CA (United States). Station Q
- Yale Univ., New Haven, CT (United States). Dept. of Physics
- Publication Date:
- Research Org.:
- Yale Univ., New Haven, CT (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1536540
- Alternate Identifier(s):
- OSTI ID: 1374070
- Grant/Contract Number:
- FG02-08ER46482; DEFG02-08ER46482
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Volume: 119; Journal Issue: 5; Journal ID: ISSN 0031-9007
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Citation Formats
Lutchyn, Roman M., and Glazman, Leonid I. Transport through a Majorana Island in the Strong Tunneling Regime. United States: N. p., 2017.
Web. doi:10.1103/physrevlett.119.057002.
Lutchyn, Roman M., & Glazman, Leonid I. Transport through a Majorana Island in the Strong Tunneling Regime. United States. https://doi.org/10.1103/physrevlett.119.057002
Lutchyn, Roman M., and Glazman, Leonid I. Fri .
"Transport through a Majorana Island in the Strong Tunneling Regime". United States. https://doi.org/10.1103/physrevlett.119.057002. https://www.osti.gov/servlets/purl/1536540.
@article{osti_1536540,
title = {Transport through a Majorana Island in the Strong Tunneling Regime},
author = {Lutchyn, Roman M. and Glazman, Leonid I.},
abstractNote = {In the presence of Rashba spin-orbit coupling, a magnetic field can drive a proximitized nanowire into a topological superconducting phase [R. M. Lutchyn, J. D. Sau, and S. Das Sarma, Phys. Rev. Lett. 105, 077001 (2010). and Y. Oreg, G. Refael, and F. von Oppen, Phys. Rev. Lett. 105, 177002 (2010).]. We study the transport properties of such nanowires in the Coulomb blockade regime. The associated with topological superconductivity Majorana modes significantly modify transport and lead to single-electron coherent transmission through the nanowire—a nonlocal signature of topological superconductivity. In this Letter, we focus on the case of strong hybridization of the Majorana modes with normal leads. The induced by hybridization broadening of the Majorana zero-energy states competes with the charging energy, leading to a considerable modification of the Coulomb blockade in a nanowire contacted by two normal leads. We evaluate the two-terminal conductance as a function of the gate voltage, junctions transmission coefficients, and the geometric capacitance of and the induced superconducting gap in the nanowire.},
doi = {10.1103/physrevlett.119.057002},
journal = {Physical Review Letters},
number = 5,
volume = 119,
place = {United States},
year = {Fri Aug 04 00:00:00 EDT 2017},
month = {Fri Aug 04 00:00:00 EDT 2017}
}
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