Visibility of vortex core in fermionic superfluid with population imbalance

Masahiro Takahashi, T. Mizushima, K. Machida, Masanori Ichioka

Research output: Contribution to journalArticle

Abstract

In Fermionic superfluids with a vortex, at T = 0, the depletion of the atomic density appears in the core region, which is strongly associated with the discreteness of the core-bound state, called the Caroli-de Gennes-Matricon state. In imbalanced superfluid, however, it is found by the microscopic study based on the Bogoliubov-de Gennes approximation that this quantum depletion is progressively filled out in majority spin species as population imbalance increases. In contrast, the minority species keeps the depletion, which enables the direct observation of "superfluidity", because the quantized vortex is a hallmark of superfluidity.

Original languageEnglish
Pages (from-to)423-427
Number of pages5
JournalJournal of Low Temperature Physics
Volume148
Issue number3-4
DOIs
Publication statusPublished - Aug 2007

Fingerprint

Superfluid helium
visibility
Visibility
depletion
Vortex flow
superfluidity
vortices
minorities
approximation

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Visibility of vortex core in fermionic superfluid with population imbalance. / Takahashi, Masahiro; Mizushima, T.; Machida, K.; Ichioka, Masanori.

In: Journal of Low Temperature Physics, Vol. 148, No. 3-4, 08.2007, p. 423-427.

Research output: Contribution to journalArticle

Takahashi, Masahiro ; Mizushima, T. ; Machida, K. ; Ichioka, Masanori. / Visibility of vortex core in fermionic superfluid with population imbalance. In: Journal of Low Temperature Physics. 2007 ; Vol. 148, No. 3-4. pp. 423-427.
@article{063843f63aab4af79498b57e643ea7f5,
title = "Visibility of vortex core in fermionic superfluid with population imbalance",
abstract = "In Fermionic superfluids with a vortex, at T = 0, the depletion of the atomic density appears in the core region, which is strongly associated with the discreteness of the core-bound state, called the Caroli-de Gennes-Matricon state. In imbalanced superfluid, however, it is found by the microscopic study based on the Bogoliubov-de Gennes approximation that this quantum depletion is progressively filled out in majority spin species as population imbalance increases. In contrast, the minority species keeps the depletion, which enables the direct observation of {"}superfluidity{"}, because the quantized vortex is a hallmark of superfluidity.",
author = "Masahiro Takahashi and T. Mizushima and K. Machida and Masanori Ichioka",
year = "2007",
month = "8",
doi = "10.1007/s10909-007-9399-5",
language = "English",
volume = "148",
pages = "423--427",
journal = "Journal of Low Temperature Physics",
issn = "0022-2291",
publisher = "Springer New York",
number = "3-4",

}

TY - JOUR

T1 - Visibility of vortex core in fermionic superfluid with population imbalance

AU - Takahashi, Masahiro

AU - Mizushima, T.

AU - Machida, K.

AU - Ichioka, Masanori

PY - 2007/8

Y1 - 2007/8

N2 - In Fermionic superfluids with a vortex, at T = 0, the depletion of the atomic density appears in the core region, which is strongly associated with the discreteness of the core-bound state, called the Caroli-de Gennes-Matricon state. In imbalanced superfluid, however, it is found by the microscopic study based on the Bogoliubov-de Gennes approximation that this quantum depletion is progressively filled out in majority spin species as population imbalance increases. In contrast, the minority species keeps the depletion, which enables the direct observation of "superfluidity", because the quantized vortex is a hallmark of superfluidity.

AB - In Fermionic superfluids with a vortex, at T = 0, the depletion of the atomic density appears in the core region, which is strongly associated with the discreteness of the core-bound state, called the Caroli-de Gennes-Matricon state. In imbalanced superfluid, however, it is found by the microscopic study based on the Bogoliubov-de Gennes approximation that this quantum depletion is progressively filled out in majority spin species as population imbalance increases. In contrast, the minority species keeps the depletion, which enables the direct observation of "superfluidity", because the quantized vortex is a hallmark of superfluidity.

UR - http://www.scopus.com/inward/record.url?scp=34347385889&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34347385889&partnerID=8YFLogxK

U2 - 10.1007/s10909-007-9399-5

DO - 10.1007/s10909-007-9399-5

M3 - Article

AN - SCOPUS:34347385889

VL - 148

SP - 423

EP - 427

JO - Journal of Low Temperature Physics

JF - Journal of Low Temperature Physics

SN - 0022-2291

IS - 3-4

ER -