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  Distinguishing Majorana zero modes from impurity states through time-resolved transport

Tuovinen, R., Perfetto, E., van Leeuwen, R., Stefanucci, G., & Sentef, M. A. (2019). Distinguishing Majorana zero modes from impurity states through time-resolved transport. New Journal of Physics, 21: 103038. doi:10.1088/1367-2630/ab4ab7.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0004-DAE2-7 Version Permalink: https://hdl.handle.net/21.11116/0000-000B-ADEF-6
Genre: Journal Article

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https://dx.doi.org/10.1088/1367-2630/ab4ab7 (Publisher version)
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https://arxiv.org/abs/1902.05821 (Preprint)
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 Creators:
Tuovinen, R.1, Author           
Perfetto, E.2, 3, Author
van Leeuwen, R.4, Author
Stefanucci, G.3, 5, Author
Sentef, M. A.1, Author           
Affiliations:
1Theoretical Description of Pump-Probe Spectroscopies in Solids, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_3012828              
2CNR-ISM, Division of Ultrafast Processes in Materials (FLASHit), ou_persistent22              
3Dipartimento di Fisica, Università di Roma Tor Vergata, ou_persistent22              
4Department of Physics, Nanoscience Center, FI-40014, University of Jyväskylä, ou_persistent22              
5INFN, Sezione di Roma Tor Vergata, ou_persistent22              

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Free keywords: quantum transport, topological superconductor, Majorana zero mode
 Abstract: We study time-resolved charge transport in a superconducting nanowire using time-dependent Landauer–Büttiker theory. We find that the steady-state Majorana zero-bias conductance peak emerges transiently accompanied by characteristic oscillations after a bias-voltage quench. These oscillations are suppressed for trivial impurity states (IS) that otherwise show a similar steady-state signal as the Majorana zero mode (MZM). In addition, we find that Andreev bound states or quasi-Majorana states (QMS) in the topologically trivial bulk phase can give rise to a zero-bias conductance peak, also retaining the transient properties of the MZM. Our results imply that (1) time-resolved transport may be used as a probe to distinguish between the topological MZM and trivial IS; and (2) the QMS mimic the transient signatures of the topological MZMs.

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Language(s): eng - English
 Dates: 2019-09-102019-06-282019-10-032019-10-16
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1088/1367-2630/ab4ab7
arXiv: 1902.05821
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Project name : -
Grant ID : 676598
Funding program : Horizon 2020 (H2020)
Funding organization : European Commission (EC)
Project name : -
Grant ID : 654360
Funding program : Horizon 2020 (H2020)
Funding organization : European Commission (EC)
Project name : RT and MAS acknowledge funding by the DFG (Grant No. SE 2558/2-1) through the Emmy Noether program. RVL acknowledges funding from the Academy of Finland (Project No. 317139). EP and GS acknowledge EC funding through the RISE Co-ExAN (Grant No. GA644076). EP also acknowledges funding from the European Union project MaX Materials design at the eXascale H2020-EINFRA-2015-1, Grant Agreement No. 676598 and Nanoscience Foundries and Fine Analysis-Europe H2020-INFRAIA-2014-2015, Grant Agreement No. 654360. GS also acknowledges Tor Vergata University for financial support through the Mission Sustainability Project 2DUTOPI.
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Title: New Journal of Physics
  Abbreviation : New J. Phys.
Source Genre: Journal
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Publ. Info: Bristol : IOP Publishing
Pages: - Volume / Issue: 21 Sequence Number: 103038 Start / End Page: - Identifier: ISSN: 1367-2630
CoNE: https://pure.mpg.de/cone/journals/resource/954926913666