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Angular Dependence of the c-axis Normal State Magnetoresistance in Single Crystal Tl2Ba2CuO6

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Citation

Hussey, N., Cooper, J., Wheatley, J., Fisher, I., Carrington, A., Mackenzie, A. P., et al. (1996). Angular Dependence of the c-axis Normal State Magnetoresistance in Single Crystal Tl2Ba2CuO6. Physical Review Letters, 76(1), 122-125. doi:10.1103/PhysRevLett.76.122.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0018-EC64-6
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.