Fourfold symmetry in the ab plane of the upper critical field for single-crystal Pb2Sr2Y0.62Ca0.38Cu3O8: Evidence for dx2−y2 pairing in a high-Tc superconductor
Yoji Koike, Tsutomu Takabayashi, Takashi Noji, Terukazu Nishizaki, Norio Kobayashi
DOI 10.1103/PhysRevB.54.R776 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We have found clear anisotropy in the ab plane with fourfold symmetry of the upper critical field for single-crystal Pb2Sr2Y0.62Ca0.38Cu3O8, which is very similar to that formerly observed in La1.86Sr0.14CuO4 [Physica B 165&166, 1449 (1990)]. This is neither attributed to the twin structure in the orthorhombic phase nor to the anisotropy of the Fermi surface but is explained as being mainly due to the anisotropy of the superconducting energy gap owing to dx2−y2 pairing, which supports dx2−y2 pairing in a high-Tc superconductor.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Pb2Sr2Y0.62Ca0.38Cu3O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 75.5 | Pressure not reported | midpoint |
| La1.86Sr0.14CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Antiphase domain boundaries in the superconducting phase of the Y-Ba-Cu-O system
similarity 0.95C. H. Chen et al.
Source status unknown — claims are unverified
Variation of Tc and transport properties with carrier concentration in Y- and Pb-doped Bi-based superconductors
similarity 0.94P. Mandal et al.
Source status unknown — claims are unverified
Anisotropy of the Seebeck Coefficient in the Cuprate Superconductor YBa2Cu3Oy: Fermi-Surface Reconstruction by Bidirectional Charge Order
similarity 0.94O. Cyr-Choinière et al.
Source status unknown — claims are unverified
Vibrational spectra and lattice instabilities in the high-Tc superconductors YBa2Cu3O7 and GdBa2Cu3O7
similarity 0.94I. Božović et al.
Source status unknown — claims are unverified
Relationship between radiation-induced orthorhombic-tetragonal phase transformation and loss of superconductivity in YBa2Cu3O7
similarity 0.94Raju P. Gupta & Michèle Gupta
Source status unknown — claims are unverified
Generic superconducting phase behavior in high-Tc cuprates: Tc variation with hole concentration in YBa2Cu3O7−δ
similarity 0.94J. L. Tallon et al.
Source status unknown — claims are unverified