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Floquet engineering of long-range p -wave superconductivity : Beyond the high-frequency limit

Li, Zeng Zhao LU ; Lam, Chi Hang and You, J. Q. (2017) In Physical Review B 96(15).
Abstract

It has been shown that long-range p-wave superconductivity in a Kitaev chain can be engineered via an ac field with a high frequency [M. Benito, Phys. Rev. B 90, 205127 (2014)PRBMDO1098-012110.1103/PhysRevB.90.205127]. For its experimental realization, however, theoretical understanding of Floquet engineering with a broader range of driving frequencies becomes important. In this paper, focusing on the ac-driven tunneling interactions of a Kitaev chain, we investigate effects from the leading correction to the high-frequency limit on the emergent p-wave superconductivity. Importantly, we find new engineered long-range p-wave pairing interactions that can significantly alter the ones in the high-frequency limit at long interaction ranges.... (More)

It has been shown that long-range p-wave superconductivity in a Kitaev chain can be engineered via an ac field with a high frequency [M. Benito, Phys. Rev. B 90, 205127 (2014)PRBMDO1098-012110.1103/PhysRevB.90.205127]. For its experimental realization, however, theoretical understanding of Floquet engineering with a broader range of driving frequencies becomes important. In this paper, focusing on the ac-driven tunneling interactions of a Kitaev chain, we investigate effects from the leading correction to the high-frequency limit on the emergent p-wave superconductivity. Importantly, we find new engineered long-range p-wave pairing interactions that can significantly alter the ones in the high-frequency limit at long interaction ranges. We also find that the leading correction additionally generates nearest-neighbor p-wave pairing interactions with a renormalized pairing energy, long-range tunneling interactions, and, in particular, multiple pairs of Floquet Majorana edge states that are destroyed in the high-frequency limit.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review B
volume
96
issue
15
publisher
American Physical Society
external identifiers
  • scopus:85037682868
  • wos:000413050700008
ISSN
2469-9950
DOI
10.1103/PhysRevB.96.155438
language
English
LU publication?
yes
id
5b466e65-f815-41b1-aa09-5bb09a2f8e7a
date added to LUP
2018-01-02 10:05:11
date last changed
2018-01-16 13:28:38
@article{5b466e65-f815-41b1-aa09-5bb09a2f8e7a,
  abstract     = {<p>It has been shown that long-range p-wave superconductivity in a Kitaev chain can be engineered via an ac field with a high frequency [M. Benito, Phys. Rev. B 90, 205127 (2014)PRBMDO1098-012110.1103/PhysRevB.90.205127]. For its experimental realization, however, theoretical understanding of Floquet engineering with a broader range of driving frequencies becomes important. In this paper, focusing on the ac-driven tunneling interactions of a Kitaev chain, we investigate effects from the leading correction to the high-frequency limit on the emergent p-wave superconductivity. Importantly, we find new engineered long-range p-wave pairing interactions that can significantly alter the ones in the high-frequency limit at long interaction ranges. We also find that the leading correction additionally generates nearest-neighbor p-wave pairing interactions with a renormalized pairing energy, long-range tunneling interactions, and, in particular, multiple pairs of Floquet Majorana edge states that are destroyed in the high-frequency limit.</p>},
  articleno    = {155438},
  author       = {Li, Zeng Zhao and Lam, Chi Hang and You, J. Q.},
  issn         = {2469-9950},
  language     = {eng},
  month        = {10},
  number       = {15},
  publisher    = {American Physical Society},
  series       = {Physical Review B},
  title        = {Floquet engineering of long-range p -wave superconductivity : Beyond the high-frequency limit},
  url          = {http://dx.doi.org/10.1103/PhysRevB.96.155438},
  volume       = {96},
  year         = {2017},
}