Anomalous modulation of Josephson radiation in nanowire-based Josephson junctions
(2018) In Physical Review B 98(4).- Abstract
We investigate the Josephson radiation of nanowire (NW)-based Josephson junctions in a parallel magnetic field. The Josephson junction made of an InAs NW with superconducting Al leads shows the emission spectra which follow the Josephson frequency over the range 4-8 GHz at zero magnetic field. We observe an apparent deviation of the emission spectra from the Josephson frequency which is accompanied by a strong enhancement of the switching current above a magnetic field of ∼300 mT. The observed modulations can be understood to reflect trivial changes in the superconducting circuit surrounding the device which is strongly affected by the applied magnetic field. Our findings will provide a way to accurately investigate topological... (More)
We investigate the Josephson radiation of nanowire (NW)-based Josephson junctions in a parallel magnetic field. The Josephson junction made of an InAs NW with superconducting Al leads shows the emission spectra which follow the Josephson frequency over the range 4-8 GHz at zero magnetic field. We observe an apparent deviation of the emission spectra from the Josephson frequency which is accompanied by a strong enhancement of the switching current above a magnetic field of ∼300 mT. The observed modulations can be understood to reflect trivial changes in the superconducting circuit surrounding the device which is strongly affected by the applied magnetic field. Our findings will provide a way to accurately investigate topological properties in NW-based systems.
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- author
- Kamata, H. ; Deacon, R. S. ; Matsuo, S. ; Li, K. ; Jeppesen, S. LU ; Samuelson, L. LU ; Xu, H. Q. LU ; Ishibashi, K. and Tarucha, S.
- organization
- publishing date
- 2018-07-19
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review B
- volume
- 98
- issue
- 4
- article number
- 041302
- publisher
- American Physical Society
- external identifiers
-
- scopus:85050458303
- ISSN
- 2469-9950
- DOI
- 10.1103/PhysRevB.98.041302
- language
- English
- LU publication?
- yes
- id
- 61f9f570-3f23-4d7c-9a6a-e16b038281d4
- alternative location
- https://arxiv.org/pdf/1805.04702.pdf
- date added to LUP
- 2018-08-28 14:29:53
- date last changed
- 2023-11-17 23:04:46
@article{61f9f570-3f23-4d7c-9a6a-e16b038281d4, abstract = {{<p>We investigate the Josephson radiation of nanowire (NW)-based Josephson junctions in a parallel magnetic field. The Josephson junction made of an InAs NW with superconducting Al leads shows the emission spectra which follow the Josephson frequency over the range 4-8 GHz at zero magnetic field. We observe an apparent deviation of the emission spectra from the Josephson frequency which is accompanied by a strong enhancement of the switching current above a magnetic field of ∼300 mT. The observed modulations can be understood to reflect trivial changes in the superconducting circuit surrounding the device which is strongly affected by the applied magnetic field. Our findings will provide a way to accurately investigate topological properties in NW-based systems.</p>}}, author = {{Kamata, H. and Deacon, R. S. and Matsuo, S. and Li, K. and Jeppesen, S. and Samuelson, L. and Xu, H. Q. and Ishibashi, K. and Tarucha, S.}}, issn = {{2469-9950}}, language = {{eng}}, month = {{07}}, number = {{4}}, publisher = {{American Physical Society}}, series = {{Physical Review B}}, title = {{Anomalous modulation of Josephson radiation in nanowire-based Josephson junctions}}, url = {{http://dx.doi.org/10.1103/PhysRevB.98.041302}}, doi = {{10.1103/PhysRevB.98.041302}}, volume = {{98}}, year = {{2018}}, }