Measuring anisotropic scattering in the cuprates
K.G. Sandeman (1), A.J. Schofield (2) ((1) Low Temperature Physics, Group, Cambridge University, UK, (2) School of Physics, Astronomy,, University of Birmingham, UK)
TL;DR
This paper presents an analytic model of anisotropic scattering in cuprate superconductors, highlighting the c-axis magnetoresistance as a key test and comparing predictions with experimental data on Tl-2201.
Contribution
It introduces a simple, analytically solvable model for anisotropic scattering in cuprates and proposes magnetoresistance measurements as a diagnostic tool.
Findings
Reasonable agreement with experiments on overdoped Tl-2201 using weak anisotropy
Predicts strong angular-dependent magnetoresistance in optimally doped Tl-2201
Suggests magnetoresistance as a method to determine in-plane scattering anisotropy
Abstract
A simple model of anisotropic scattering in a quasi two-dimensional metal is studied. Its simplicity allows an analytic calculation of transport properties using the Boltzmann equation and relaxation time approximation. We argue that the c-axis magnetoresistance provides the key test of this model of transport. We compare this model with experiments on overdoped Tl-2201 and find reasonable agreement using only weak scattering anisotropy. We argue that optimally doped Tl-2201 should show strong angular-dependent magnetoresistance within this model and would provide a robust way of determining the in-plane scattering anisotropy in the cuprates.
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Taxonomy
TopicsSpacecraft and Cryogenic Technologies · Methane Hydrates and Related Phenomena