Field-induced anisotropy in high-Tc superconductors

Y. Wolfus; Y. Yeshurun; I. Felner

doi:10.1103/PhysRevB.37.3667

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Field-induced anisotropy in high-Tc superconductors

Y. Wolfus, Y. Yeshurun, I. Felner

DOI 10.1103/PhysRevB.37.3667 · Physical Review B

T1

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Abstract

We have studied the angular dependence of the magnetization of YBa2Cu3O7 by rotating the sample relative to the applied magnetic field. At low temperatures and low fields the irreversible part of the field-cooled magnetization Mirr rotates with the sample as a rigid entity. The rigidity is broken and part of Mirr disappears above an angle φ* which decreases with increasing either temperature or field. This behavior resembles that of spin glasses and differs qualitatively from the behavior found for Nb, a type-II superconductor.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Nb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown