Creating and detecting poor man's Majorana bound states in interacting quantum dots
Tsintzis, Athanasios LU ; Souto, Rubén Seoane LU
and Leijnse, Martin
LU
(2022)
In Physical Review B
106(20).
- Abstract
We propose and theoretically investigate an alternative way to create the poor man's Majorana bound states (MBSs) introduced in Phys. Rev. B 86, 134528 (2012)10.1103/PhysRevB.86.134528. Our proposal is based on two quantum dots (QDs) with strong electron-electron interactions that couple via a central QD with proximity-induced superconductivity. In the presence of spin-orbit coupling and a magnetic field, gate control of all three QDs allows tuning the system into sweet spots with one MBS localized on each outer dot. We quantify the quality of these MBSs and show how it depends on the Zeeman energy and interaction strength. We also show how nonlocal transport spectroscopy can be used to identify sweet spots with high MBS quality. Our... (More)
We propose and theoretically investigate an alternative way to create the poor man's Majorana bound states (MBSs) introduced in Phys. Rev. B 86, 134528 (2012)10.1103/PhysRevB.86.134528. Our proposal is based on two quantum dots (QDs) with strong electron-electron interactions that couple via a central QD with proximity-induced superconductivity. In the presence of spin-orbit coupling and a magnetic field, gate control of all three QDs allows tuning the system into sweet spots with one MBS localized on each outer dot. We quantify the quality of these MBSs and show how it depends on the Zeeman energy and interaction strength. We also show how nonlocal transport spectroscopy can be used to identify sweet spots with high MBS quality. Our results provide a path for investigating MBS physics in a setting that is free of many of the doubts and uncertainties that plague other platforms.
(Less)
- author
- Tsintzis, Athanasios
LU
; Souto, Rubén Seoane
LU
and Leijnse, Martin
LU
- organization
- publishing date
- 2022-11-15
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review B
- volume
- 106
- issue
- 20
- article number
- L201404
- publisher
- American Physical Society
- external identifiers
-
- scopus:85142822036
- ISSN
- 2469-9950
- DOI
- 10.1103/PhysRevB.106.L201404
- language
- English
- LU publication?
- yes
- id
- 7118df44-4a50-46dc-97ae-b7802fa45fcd
- date added to LUP
- 2022-12-23 11:01:11
- date last changed
- 2023-11-19 13:16:34
@article{7118df44-4a50-46dc-97ae-b7802fa45fcd,
abstract = {{<p>We propose and theoretically investigate an alternative way to create the poor man's Majorana bound states (MBSs) introduced in Phys. Rev. B 86, 134528 (2012)10.1103/PhysRevB.86.134528. Our proposal is based on two quantum dots (QDs) with strong electron-electron interactions that couple via a central QD with proximity-induced superconductivity. In the presence of spin-orbit coupling and a magnetic field, gate control of all three QDs allows tuning the system into sweet spots with one MBS localized on each outer dot. We quantify the quality of these MBSs and show how it depends on the Zeeman energy and interaction strength. We also show how nonlocal transport spectroscopy can be used to identify sweet spots with high MBS quality. Our results provide a path for investigating MBS physics in a setting that is free of many of the doubts and uncertainties that plague other platforms.</p>}},
author = {{Tsintzis, Athanasios and Souto, Rubén Seoane and Leijnse, Martin}},
issn = {{2469-9950}},
language = {{eng}},
month = {{11}},
number = {{20}},
publisher = {{American Physical Society}},
series = {{Physical Review B}},
title = {{Creating and detecting poor man's Majorana bound states in interacting quantum dots}},
url = {{http://dx.doi.org/10.1103/PhysRevB.106.L201404}},
doi = {{10.1103/PhysRevB.106.L201404}},
volume = {{106}},
year = {{2022}},
}