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 |
| Pages (from-to) | 1-4 |
| Number of pages | 4 |
| Journal | Physical Review Letters |
| Volume | 94 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Feb 18 2005 |
ASJC Scopus subject areas
- Physics and Astronomy(all)
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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), 1-4. [067007]. https://doi.org/10.1103/PhysRevLett.94.067007