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.
| Original language | English |
|---|---|
| Article number | 067007 |
| Journal | Physical Review Letters |
| Volume | 94 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Feb 18 2005 |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Anisotropic diamagnetic response in type-II superconductors with gap and fermi-surface anisotropies. / Adachi, Hiroto; Miranović, P.; Ichioka, Masanori; Machida, K.
In: Physical Review Letters, Vol. 94, No. 6, 067007, 18.02.2005.Research output: Contribution to journal › Article
}
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 -