Vortex Phase Diagram of Crossing-Lattices State in Bi₂Sr₂CaCu₂O_8+y

Authors: Tamegai T.; Tokunaga M.; Murata T.; Kameda N.

Source: Journal of Low Temperature Physics, Volume 131, Numbers 5-6, June 2003 , pp. 1003-1007(5)

Publisher: Springer

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Abstract:

Phase diagram of a novel vortex state realized under tilted fields, crossing-lattices state, is extensively studied using Hall probe magnetometry. Precise measurements of angular dependence of second magnetization peak and the vortex penetration fields clarify the transition from the tilted lattice state to the crossing-lattices state. Under large tilted magnetic fields, irreversible magnetization and AC local permeability show several anomalies. With all these observations we construct a phase diagram identifying three boundaries with nearly constant c-axis fields and one with nearly constant in-plane field.

Language: English

Document Type: Research article

Affiliations: 1: Department of Applied Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan

Publication date: 2003-06-01