Parity independence of the zero-bias conductance peak in a nanowire based topological superconductor-quantum dot hybrid device.
(2014) In Scientific Reports 4.- Abstract
- We explore the signatures of Majorana fermions in a nanowire based topological superconductor-quantum dot-topological superconductor hybrid device by charge transport measurements. At zero magnetic field, well-defined Coulomb diamonds and the Kondo effect are observed. Under the application of a finite, sufficiently strong magnetic field, a zero-bias conductance peak structure is observed. It is found that the zero-bias conductance peak is present in many consecutive Coulomb diamonds, irrespective of the even-odd parity of the quasi-particle occupation number in the quantum dot. In addition, we find that the zero-bias conductance peak is in most cases accompanied by two differential conductance peaks, forming a triple-peak structure, and... (More)
- We explore the signatures of Majorana fermions in a nanowire based topological superconductor-quantum dot-topological superconductor hybrid device by charge transport measurements. At zero magnetic field, well-defined Coulomb diamonds and the Kondo effect are observed. Under the application of a finite, sufficiently strong magnetic field, a zero-bias conductance peak structure is observed. It is found that the zero-bias conductance peak is present in many consecutive Coulomb diamonds, irrespective of the even-odd parity of the quasi-particle occupation number in the quantum dot. In addition, we find that the zero-bias conductance peak is in most cases accompanied by two differential conductance peaks, forming a triple-peak structure, and the separation between the two side peaks in bias voltage shows oscillations closely correlated to the background Coulomb conductance oscillations of the device. The observed zero-bias conductance peak and the associated triple-peak structure are in line with Majorana fermion physics in such a hybrid topological system. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4913706
- author
- Deng, Mingtang LU ; Yu, Chunlin LU ; Huang, Guangyao LU ; Larsson, Marcus LU ; Caroff, Philippe LU and Xu, Hongqi LU
- organization
- publishing date
- 2014
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Scientific Reports
- volume
- 4
- article number
- 7261
- publisher
- Nature Publishing Group
- external identifiers
-
- pmid:25434375
- wos:000346257700009
- scopus:84916214534
- pmid:25434375
- ISSN
- 2045-2322
- DOI
- 10.1038/srep07261
- language
- English
- LU publication?
- yes
- id
- fbfbbb5a-b683-408d-922e-31dfc4bd10ab (old id 4913706)
- date added to LUP
- 2016-04-01 13:26:03
- date last changed
- 2023-11-12 16:54:14
@article{fbfbbb5a-b683-408d-922e-31dfc4bd10ab,
abstract = {{We explore the signatures of Majorana fermions in a nanowire based topological superconductor-quantum dot-topological superconductor hybrid device by charge transport measurements. At zero magnetic field, well-defined Coulomb diamonds and the Kondo effect are observed. Under the application of a finite, sufficiently strong magnetic field, a zero-bias conductance peak structure is observed. It is found that the zero-bias conductance peak is present in many consecutive Coulomb diamonds, irrespective of the even-odd parity of the quasi-particle occupation number in the quantum dot. In addition, we find that the zero-bias conductance peak is in most cases accompanied by two differential conductance peaks, forming a triple-peak structure, and the separation between the two side peaks in bias voltage shows oscillations closely correlated to the background Coulomb conductance oscillations of the device. The observed zero-bias conductance peak and the associated triple-peak structure are in line with Majorana fermion physics in such a hybrid topological system.}},
author = {{Deng, Mingtang and Yu, Chunlin and Huang, Guangyao and Larsson, Marcus and Caroff, Philippe and Xu, Hongqi}},
issn = {{2045-2322}},
language = {{eng}},
publisher = {{Nature Publishing Group}},
series = {{Scientific Reports}},
title = {{Parity independence of the zero-bias conductance peak in a nanowire based topological superconductor-quantum dot hybrid device.}},
url = {{http://dx.doi.org/10.1038/srep07261}},
doi = {{10.1038/srep07261}},
volume = {{4}},
year = {{2014}},
}