Angular Dependence of the Nonlinear Transverse Magnetic Moment of YBa2Cu3O6.95 in the Meissner State
Anand Bhattacharya, Igor Zutic, Oriol T. Valls, A. M. Goldman, Ulrich Welp, Boyd Veal
DOI 10.1103/PhysRevLett.82.3132 · Physical Review Letters
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Abstract
The angular dependence of the nonlinear transverse magnetic moment of untwinned high-quality single crystals of YBa2Cu3O6.95 has been studied at a temperature of 2.5 K using a low frequency ac technique. The absence of any signature at angular period 2π/4 is analyzed in light of the numerical predictions of such a signal for a pure dx2−y2 order parameter with line nodes. Implications of this null result for the existence of a nonzero gap at all angles on the Fermi surface are discussed.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O6.95 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 93 | Pressure not reported | onset |
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