Angular dependence of the c-axis normal state magnetoresistance in single crystal Tl2Ba2CuO6

N E Hussey, J R Cooper, J M Wheatley, I R Fisher, A Carrington, A P Mackenzie, C T Lin, O Milat

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Abstract

We report measurements of the normal state magnetoresistance (MR) from 30 to 340 K in fields B up to 13 T for single crystals of overdoped Tl2Ba2CuO6 (T-c less than or equal to 25 K). For out-of-plane current flow, the transverse MR Delta rho(c)/rho(c) is large and positive. On rotating B within the a-b plane, Delta rho(c)/rho(c) exhibits a striking anisotropy with fourfold symmetry. The amplitude of this effect increases as B-4 and the maximum MR occurs for B along the [110] crystallographic directions, i.e., at 45 degrees to the Cu-O-Cu bonds. This the first direct evidence for anisotropy of the in-plane mean free path in the cuprates.

Original languageEnglish
Pages (from-to)122-125
Number of pages4
JournalPhysical Review Letters
Volume76
Issue number1
DOIs
Publication statusPublished - 1 Jan 1996

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