Disorder induced reduction of the anomalous Hall voltage in proton and Ag21+- ion- irradiated Tl2Ba2CaCu2O8 epitaxial films

Budhani, R. C. ; Weaver, B. D. ; Holstein, W. L. (1994) Disorder induced reduction of the anomalous Hall voltage in proton and Ag21+- ion- irradiated Tl2Ba2CaCu2O8 epitaxial films Physical Review B: Condensed Matter, 50 (5). pp. 3499-3502. ISSN 0163-1829

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Official URL: http://prb.aps.org/abstract/PRB/v50/i5/p3499_1

Abstract

The effects of structural disorder introduced by proton and heavy-ion irradiation on the mixed-state Hall resistivity (ρxy) of Tl2Ba2CaCu2O8 films are reported. The ρxy attains a peak negative value at a temperature T* where the vortex mobility is a rapidly varying function of temperature. At T* it also shows a universal inverse scaling with the normal-state resistivity of the material, which increases on irradiation. Our data suggest that a stronger downstream contribution to vortex velocity from the drift of the normal carriers in the core, dictates the sign of the Hall voltage as the overall carrier concentration in the materials is reduced by irradiation.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:77243
Deposited On:10 Jan 2012 14:15
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