Vortex microscopic structure in BCS to BEC Fermi superfluids

Masahiko Machida; Tomio Koyama; Yoji Ohashi

doi:10.1016/j.physc.2007.03.431

Vortex microscopic structure in BCS to BEC Fermi superfluids

Masahiko Machida, Tomio Koyama, Yoji Ohashi

Institute for Materials Research (IMR)

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

In order to examine how the vortex core changes its structure when approaching BEC from BCS regime in superfluid fermion-atom gasses we make a systematic numerical study for the core structure of a singly quantized vortex, solving numerically the generalized Bogoliubov-de Gennes equation derived from the fermion-boson model. Numerical calculations reveal that the vortex core can be well characterized by two length scales based on the spatial variation of the fermionic gap functions and those scales show distinctive differences between the BCS and BEC regimes.

Original language	English
Pages (from-to)	275-276
Number of pages	2
Journal	Physica C: Superconductivity and its applications
Volume	460-462 I
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.physc.2007.03.431
Publication status	Published - 2007 Sept 1

Keywords

Atomic Fermi gas
Bogoliubov-de Gennes equation
Vortex core

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1016/j.physc.2007.03.431

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abstract = "In order to examine how the vortex core changes its structure when approaching BEC from BCS regime in superfluid fermion-atom gasses we make a systematic numerical study for the core structure of a singly quantized vortex, solving numerically the generalized Bogoliubov-de Gennes equation derived from the fermion-boson model. Numerical calculations reveal that the vortex core can be well characterized by two length scales based on the spatial variation of the fermionic gap functions and those scales show distinctive differences between the BCS and BEC regimes.",

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author = "Masahiko Machida and Tomio Koyama and Yoji Ohashi",

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T1 - Vortex microscopic structure in BCS to BEC Fermi superfluids

AU - Machida, Masahiko

AU - Koyama, Tomio

AU - Ohashi, Yoji

PY - 2007/9/1

Y1 - 2007/9/1

N2 - In order to examine how the vortex core changes its structure when approaching BEC from BCS regime in superfluid fermion-atom gasses we make a systematic numerical study for the core structure of a singly quantized vortex, solving numerically the generalized Bogoliubov-de Gennes equation derived from the fermion-boson model. Numerical calculations reveal that the vortex core can be well characterized by two length scales based on the spatial variation of the fermionic gap functions and those scales show distinctive differences between the BCS and BEC regimes.

AB - In order to examine how the vortex core changes its structure when approaching BEC from BCS regime in superfluid fermion-atom gasses we make a systematic numerical study for the core structure of a singly quantized vortex, solving numerically the generalized Bogoliubov-de Gennes equation derived from the fermion-boson model. Numerical calculations reveal that the vortex core can be well characterized by two length scales based on the spatial variation of the fermionic gap functions and those scales show distinctive differences between the BCS and BEC regimes.

KW - Atomic Fermi gas

KW - Bogoliubov-de Gennes equation

KW - Vortex core

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SN - 0921-4534

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SP - 275

EP - 276

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

IS - SPEC. ISS.

ER -

Vortex microscopic structure in BCS to BEC Fermi superfluids

Abstract

Keywords

ASJC Scopus subject areas

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