Highly Isotropic In-plane Upper Critical Field in the Anisotropic s-Wave Superconductor 2H-NbSe2

Syuma Yasuzuka; Shinya Uji; Shiori Sugiura; Taichi Terashima; Yoshio Nogami; Koichi Ichimura; Satoshi Tanda

doi:10.1007/s10948-019-05333-z

Highly Isotropic In-plane Upper Critical Field in the Anisotropic s-Wave Superconductor 2H-NbSe₂

Syuma Yasuzuka, Shinya Uji, Shiori Sugiura, Taichi Terashima, Yoshio Nogami, Koichi Ichimura, Satoshi Tanda

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

4 Citations (Scopus)

Abstract

Resistivity measurements for a layered transition metal dichalcogenide 2H-NbSe₂ were performed to investigate the in-plane anisotropy of the upper critical field (H_c2) for magnetic fields up to 14.5 T at temperatures down to 2.0 K. For fields rotated within the basal plane, the in-plane anisotropy of a characteristic field H^∗ (defined as the field strength at which the resistivity reaches zero) showed twofold symmetry at low temperatures. On the basis of this result, the in-plane anisotropy of H_c2 and the superconducting gap structure in 2H-NbSe₂ are discussed.

Original language	English
Pages (from-to)	953-958
Number of pages	6
Journal	Journal of Superconductivity and Novel Magnetism
Volume	33
Issue number	4
DOIs	https://doi.org/10.1007/s10948-019-05333-z
Publication status	Published - Apr 1 2020

Keywords

2H-NbSe
Anisotropic s-wave superconductivity
Superconducting gap
Upper critical field

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1007/s10948-019-05333-z

Cite this

@article{f02b61d7a26c469398e00be4131a8bff,

title = "Highly Isotropic In-plane Upper Critical Field in the Anisotropic s-Wave Superconductor 2H-NbSe2 ",

abstract = "Resistivity measurements for a layered transition metal dichalcogenide 2H-NbSe2 were performed to investigate the in-plane anisotropy of the upper critical field (Hc2) for magnetic fields up to 14.5 T at temperatures down to 2.0 K. For fields rotated within the basal plane, the in-plane anisotropy of a characteristic field H∗ (defined as the field strength at which the resistivity reaches zero) showed twofold symmetry at low temperatures. On the basis of this result, the in-plane anisotropy of Hc2 and the superconducting gap structure in 2H-NbSe2 are discussed.",

keywords = "2H-NbSe, Anisotropic s-wave superconductivity, Superconducting gap, Upper critical field",

author = "Syuma Yasuzuka and Shinya Uji and Shiori Sugiura and Taichi Terashima and Yoshio Nogami and Koichi Ichimura and Satoshi Tanda",

note = "Publisher Copyright: {\textcopyright} 2019, Springer Science+Business Media, LLC, part of Springer Nature.",

year = "2020",

month = apr,

day = "1",

doi = "10.1007/s10948-019-05333-z",

language = "English",

volume = "33",

pages = "953--958",

journal = "Journal of Superconductivity and Novel Magnetism",

issn = "1557-1939",

publisher = "Springer New York",

number = "4",

}

TY - JOUR

T1 - Highly Isotropic In-plane Upper Critical Field in the Anisotropic s-Wave Superconductor 2H-NbSe2

AU - Yasuzuka, Syuma

AU - Uji, Shinya

AU - Sugiura, Shiori

AU - Terashima, Taichi

AU - Nogami, Yoshio

AU - Ichimura, Koichi

AU - Tanda, Satoshi

PY - 2020/4/1

Y1 - 2020/4/1

N2 - Resistivity measurements for a layered transition metal dichalcogenide 2H-NbSe2 were performed to investigate the in-plane anisotropy of the upper critical field (Hc2) for magnetic fields up to 14.5 T at temperatures down to 2.0 K. For fields rotated within the basal plane, the in-plane anisotropy of a characteristic field H∗ (defined as the field strength at which the resistivity reaches zero) showed twofold symmetry at low temperatures. On the basis of this result, the in-plane anisotropy of Hc2 and the superconducting gap structure in 2H-NbSe2 are discussed.

AB - Resistivity measurements for a layered transition metal dichalcogenide 2H-NbSe2 were performed to investigate the in-plane anisotropy of the upper critical field (Hc2) for magnetic fields up to 14.5 T at temperatures down to 2.0 K. For fields rotated within the basal plane, the in-plane anisotropy of a characteristic field H∗ (defined as the field strength at which the resistivity reaches zero) showed twofold symmetry at low temperatures. On the basis of this result, the in-plane anisotropy of Hc2 and the superconducting gap structure in 2H-NbSe2 are discussed.

KW - 2H-NbSe

KW - Anisotropic s-wave superconductivity

KW - Superconducting gap

KW - Upper critical field

UR - http://www.scopus.com/inward/record.url?scp=85075127698&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85075127698&partnerID=8YFLogxK

U2 - 10.1007/s10948-019-05333-z

DO - 10.1007/s10948-019-05333-z

M3 - Article

AN - SCOPUS:85075127698

SN - 1557-1939

VL - 33

SP - 953

EP - 958

JO - Journal of Superconductivity and Novel Magnetism

JF - Journal of Superconductivity and Novel Magnetism

IS - 4

ER -