Josephson effect in a few-hole quantum dot

Joost Ridderbos; Matthias Brauns; Jie Shen; Folkert K. de Vries; Ang Li; Erik P. A. M. Bakkers; Alexander Brinkman; Floris A. Zwanenburg

doi:10.48550/arXiv.1809.08487

Josephson effect in a few-hole quantum dot

Joost Ridderbos
, Matthias Brauns
, Jie Shen
, Folkert K. de Vries
, Ang Li
, Erik P. A. M. Bakkers
, Alexander Brinkman
, Floris A. Zwanenburg

Research output: Working paper › Preprint › Academic

36 Downloads (Pure)

Abstract

We use a Ge-Si core-shell nanowire to realise a Josephson field-effect transistor with highly transparent contacts to superconducting leads. By changing the electric field we gain access to two distinct regimes not combined before in a single device: In the accumulation mode the device is highly transparent and the supercurrent is carried by multiple subbands, while near depletion supercurrent is carried by single-particle levels of a strongly coupled quantum dot operating in the few-hole regime. These results establish Ge-Si nanowires as an important platform for hybrid superconductor-semiconductor physics and Majorana fermions.

Original language	English
Publisher	ArXiv.org
Number of pages	9
DOIs	https://doi.org/10.48550/arXiv.1809.08487
Publication status	Published - 22 Sept 2018

Keywords

cond-mat.mes-hall

Access to Document

10.48550/arXiv.1809.08487

1809.08487v1Final published version, 4.72 MB

1 Article

Josephson Effect in a Few-Hole Quantum Dot
Ridderbos, J., Brauns, M., Shen, J., de Vries, F. K., Li, A., Bakkers, E. P. A. M., Brinkman, A. & Zwanenburg, F. A. (Corresponding Author), 2 Nov 2018, In: Advanced materials. 30, 44, 1802257.
Research output: Contribution to journal › Article › Academic › peer-review

Open Access
File
25 Citations (Scopus)

154 Downloads (Pure)

Cite this

@techreport{ddd1d6a1a8884f69bea01000e45de776,

title = "Josephson effect in a few-hole quantum dot",

abstract = " We use a Ge-Si core-shell nanowire to realise a Josephson field-effect transistor with highly transparent contacts to superconducting leads. By changing the electric field we gain access to two distinct regimes not combined before in a single device: In the accumulation mode the device is highly transparent and the supercurrent is carried by multiple subbands, while near depletion supercurrent is carried by single-particle levels of a strongly coupled quantum dot operating in the few-hole regime. These results establish Ge-Si nanowires as an important platform for hybrid superconductor-semiconductor physics and Majorana fermions. ",

keywords = "cond-mat.mes-hall",

author = "Joost Ridderbos and Matthias Brauns and Jie Shen and \{de Vries\}, \{Folkert K.\} and Ang Li and Bakkers, \{Erik P. A. M.\} and Alexander Brinkman and Zwanenburg, \{Floris A.\}",

year = "2018",

month = sep,

day = "22",

doi = "10.48550/arXiv.1809.08487",

language = "English",

publisher = "ArXiv.org",

type = "WorkingPaper",

institution = "ArXiv.org",

}

TY - UNPB

T1 - Josephson effect in a few-hole quantum dot

AU - Ridderbos, Joost

AU - Brauns, Matthias

AU - Shen, Jie

AU - de Vries, Folkert K.

AU - Li, Ang

AU - Bakkers, Erik P. A. M.

AU - Brinkman, Alexander

AU - Zwanenburg, Floris A.

PY - 2018/9/22

Y1 - 2018/9/22

N2 - We use a Ge-Si core-shell nanowire to realise a Josephson field-effect transistor with highly transparent contacts to superconducting leads. By changing the electric field we gain access to two distinct regimes not combined before in a single device: In the accumulation mode the device is highly transparent and the supercurrent is carried by multiple subbands, while near depletion supercurrent is carried by single-particle levels of a strongly coupled quantum dot operating in the few-hole regime. These results establish Ge-Si nanowires as an important platform for hybrid superconductor-semiconductor physics and Majorana fermions.

AB - We use a Ge-Si core-shell nanowire to realise a Josephson field-effect transistor with highly transparent contacts to superconducting leads. By changing the electric field we gain access to two distinct regimes not combined before in a single device: In the accumulation mode the device is highly transparent and the supercurrent is carried by multiple subbands, while near depletion supercurrent is carried by single-particle levels of a strongly coupled quantum dot operating in the few-hole regime. These results establish Ge-Si nanowires as an important platform for hybrid superconductor-semiconductor physics and Majorana fermions.

KW - cond-mat.mes-hall

U2 - 10.48550/arXiv.1809.08487

DO - 10.48550/arXiv.1809.08487

M3 - Preprint

BT - Josephson effect in a few-hole quantum dot

PB - ArXiv.org

ER -

Josephson effect in a few-hole quantum dot

Abstract

Keywords

Access to Document

Fingerprint

Research output

Josephson Effect in a Few-Hole Quantum Dot

Cite this