Theoretical study on the field dependence of the zero energy density of states in an anisotropic gap superconductors

N. Nakai; P. Miranović; M. Ichioka; K. Machida

doi:10.1016/j.jpcs.2005.05.011

Theoretical study on the field dependence of the zero energy density of states in an anisotropic gap superconductors

N. Nakai, P. Miranović, M. Ichioka, K. Machida

Research Institute for Interdisciplinary Science

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

1 Citation (Scopus)

Abstract

Based on the quasi-classical theory, we calculate the zero energy density of states N(B) in the mixed state for a type II superconductor. N(B) is related to the sommerfeld coefficient γ(B), which gives us useful information for a superconducting gap. The linear portion in γ(B) relative to B _c2 and its slope in a low field reflect the gap anisotropy, so that we can distinguish the nodal gap and the anisotropic full gap, and estimate the magnitude of the gap anisotropy.

Original language	English
Pages (from-to)	1362-1364
Number of pages	3
Journal	Journal of Physics and Chemistry of Solids
Volume	66
Issue number	8-9
DOIs	https://doi.org/10.1016/j.jpcs.2005.05.011
Publication status	Published - 2005

Keywords

A.Superconductivity
D.Electronic structure
D.Superconductors

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

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10.1016/j.jpcs.2005.05.011

Cite this

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title = "Theoretical study on the field dependence of the zero energy density of states in an anisotropic gap superconductors",

abstract = "Based on the quasi-classical theory, we calculate the zero energy density of states N(B) in the mixed state for a type II superconductor. N(B) is related to the sommerfeld coefficient γ(B), which gives us useful information for a superconducting gap. The linear portion in γ(B) relative to B c2 and its slope in a low field reflect the gap anisotropy, so that we can distinguish the nodal gap and the anisotropic full gap, and estimate the magnitude of the gap anisotropy.",

keywords = "A.Superconductivity, D.Electronic structure, D.Superconductors",

author = "N. Nakai and P. Miranovi{\'c} and M. Ichioka and K. Machida",

note = "Funding Information: This work is supported by a Grant-in-Aid for the 21st Century COE {\textquoteleft}Center for Diversity and University in Physics{\textquoteright} from the Ministry of Education, Culture, Sports, Science and Technology of Japan.",

year = "2005",

doi = "10.1016/j.jpcs.2005.05.011",

language = "English",

volume = "66",

pages = "1362--1364",

journal = "Journal of Physics and Chemistry of Solids",

issn = "0022-3697",

publisher = "Elsevier Limited",

number = "8-9",

}

TY - JOUR

T1 - Theoretical study on the field dependence of the zero energy density of states in an anisotropic gap superconductors

AU - Nakai, N.

AU - Miranović, P.

AU - Ichioka, M.

AU - Machida, K.

N1 - Funding Information: This work is supported by a Grant-in-Aid for the 21st Century COE ‘Center for Diversity and University in Physics’ from the Ministry of Education, Culture, Sports, Science and Technology of Japan.

PY - 2005

Y1 - 2005

N2 - Based on the quasi-classical theory, we calculate the zero energy density of states N(B) in the mixed state for a type II superconductor. N(B) is related to the sommerfeld coefficient γ(B), which gives us useful information for a superconducting gap. The linear portion in γ(B) relative to B c2 and its slope in a low field reflect the gap anisotropy, so that we can distinguish the nodal gap and the anisotropic full gap, and estimate the magnitude of the gap anisotropy.

AB - Based on the quasi-classical theory, we calculate the zero energy density of states N(B) in the mixed state for a type II superconductor. N(B) is related to the sommerfeld coefficient γ(B), which gives us useful information for a superconducting gap. The linear portion in γ(B) relative to B c2 and its slope in a low field reflect the gap anisotropy, so that we can distinguish the nodal gap and the anisotropic full gap, and estimate the magnitude of the gap anisotropy.

KW - A.Superconductivity

KW - D.Electronic structure

KW - D.Superconductors

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U2 - 10.1016/j.jpcs.2005.05.011

DO - 10.1016/j.jpcs.2005.05.011

M3 - Article

AN - SCOPUS:24944584008

SN - 0022-3697

VL - 66

SP - 1362

EP - 1364

JO - Journal of Physics and Chemistry of Solids

JF - Journal of Physics and Chemistry of Solids

IS - 8-9

ER -

Theoretical study on the field dependence of the zero energy density of states in an anisotropic gap superconductors

Abstract

Keywords

ASJC Scopus subject areas

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