Anisotropic diamagnetic response in type-II superconductors with gap and fermi-surface anisotropies

Hiroto Adachi; P. Miranović; Masanori Ichioka; K. Machida

doi:10.1103/PhysRevLett.94.067007

Anisotropic diamagnetic response in type-II superconductors with gap and fermi-surface anisotropies

Hiroto Adachi, P. Miranović, Masanori Ichioka, K. Machida

Research Institute for Interdisciplinary Science

Research output: Contribution to journal › Article

13 Citations (Scopus)

Abstract

The effects of anisotropic gap structures on a diamagnetic response are investigated in order to demonstrate that the field-angle-resolved magnetization [M_L(χ)] measurement can be used as a spectroscopic method to detect gap structures. Our microscopic calculation based on the quasiclassical Eilenberger formalism reveals that M_L(χ) in a superconductor with a fourfold gap displays a fourfold oscillation reflecting the gap and Fermi-surface anisotropies, and the sign of this oscillation changes at a field between H_c1 and H_c2. As a prototype of unconventional superconductors, magnetization data for borocarbides are also discussed.

Original language	English
Article number	067007
Journal	Physical Review Letters
Volume	94
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevLett.94.067007
Publication status	Published - Feb 18 2005

Fingerprint

ASJC Scopus subject areas

Physics and Astronomy(all)

Cite this

Adachi, H., Miranović, P., Ichioka, M., & Machida, K. (2005). Anisotropic diamagnetic response in type-II superconductors with gap and fermi-surface anisotropies. Physical Review Letters, 94(6), [067007]. https://doi.org/10.1103/PhysRevLett.94.067007

@article{989e629659d5470c8130bfae4e882bdd,

title = "Anisotropic diamagnetic response in type-II superconductors with gap and fermi-surface anisotropies",

abstract = "The effects of anisotropic gap structures on a diamagnetic response are investigated in order to demonstrate that the field-angle-resolved magnetization [ML(χ)] measurement can be used as a spectroscopic method to detect gap structures. Our microscopic calculation based on the quasiclassical Eilenberger formalism reveals that ML(χ) in a superconductor with a fourfold gap displays a fourfold oscillation reflecting the gap and Fermi-surface anisotropies, and the sign of this oscillation changes at a field between Hc1 and Hc2. As a prototype of unconventional superconductors, magnetization data for borocarbides are also discussed.",

author = "Hiroto Adachi and P. Miranovi{\'c} and Masanori Ichioka and K. Machida",

year = "2005",

month = feb

day = "18",

doi = "10.1103/PhysRevLett.94.067007",

language = "English",

volume = "94",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "6",

}

TY - JOUR

T1 - Anisotropic diamagnetic response in type-II superconductors with gap and fermi-surface anisotropies

AU - Adachi, Hiroto

AU - Miranović, P.

AU - Ichioka, Masanori

AU - Machida, K.

PY - 2005/2/18

Y1 - 2005/2/18

N2 - The effects of anisotropic gap structures on a diamagnetic response are investigated in order to demonstrate that the field-angle-resolved magnetization [ML(χ)] measurement can be used as a spectroscopic method to detect gap structures. Our microscopic calculation based on the quasiclassical Eilenberger formalism reveals that ML(χ) in a superconductor with a fourfold gap displays a fourfold oscillation reflecting the gap and Fermi-surface anisotropies, and the sign of this oscillation changes at a field between Hc1 and Hc2. As a prototype of unconventional superconductors, magnetization data for borocarbides are also discussed.

AB - The effects of anisotropic gap structures on a diamagnetic response are investigated in order to demonstrate that the field-angle-resolved magnetization [ML(χ)] measurement can be used as a spectroscopic method to detect gap structures. Our microscopic calculation based on the quasiclassical Eilenberger formalism reveals that ML(χ) in a superconductor with a fourfold gap displays a fourfold oscillation reflecting the gap and Fermi-surface anisotropies, and the sign of this oscillation changes at a field between Hc1 and Hc2. As a prototype of unconventional superconductors, magnetization data for borocarbides are also discussed.

UR - http://www.scopus.com/inward/record.url?scp=18244401377&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=18244401377&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.94.067007

DO - 10.1103/PhysRevLett.94.067007

M3 - Article

AN - SCOPUS:18244401377

VL - 94

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 6

M1 - 067007

ER -

Access to Document

10.1103/PhysRevLett.94.067007