Anisotropic scattering in angular-dependent magnetoresistance oscillations of quasi-two-dimensional and quasi-one-dimensional metals: Beyond the relaxation-time approximation

Smith, M. F. and McKenzie, R. H. (2008) Anisotropic scattering in angular-dependent magnetoresistance oscillations of quasi-two-dimensional and quasi-one-dimensional metals: Beyond the relaxation-time approximation. Physical Review B, 77 23: . doi:10.1103/PhysRevB.77.235123

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Author Smith, M. F.
McKenzie, R. H.
Title Anisotropic scattering in angular-dependent magnetoresistance oscillations of quasi-two-dimensional and quasi-one-dimensional metals: Beyond the relaxation-time approximation
Journal name Physical Review B   Check publisher's open access policy
ISSN 1098-0121
Publication date 2008-06-27
Sub-type Article (original research)
DOI 10.1103/PhysRevB.77.235123
Open Access Status File (Publisher version)
Volume 77
Issue 23
Total pages 12
Editor P.D. Adams
Place of publication College Park, Maryland, USA
Publisher American Physical Society
Collection year 2009
Language eng
Subject C1
970102 Expanding Knowledge in the Physical Sciences
020499 Condensed Matter Physics not elsewhere classified
Abstract The electrical resistivity for a current moving perpendicular to layers (chains) in quasi-two-dimensional (2D) [quasi-one-dimensional (1D)] metals under an applied magnetic field of varying orientation is studied using Boltzmann transport theory. We consider the simplest nontrivial quasi-2D and quasi-1D Fermi surfaces but allow for an arbitrary elastic collision integral (i.e., a scattering probability with arbitrary dependence on momentum transfer) and obtain an expression for the resistivity which generalizes that previously found using a single relaxation-time approximation. The dependence of the resistivity on the angle between the magnetic field and current changes depending on the momentum dependence of the scattering probability. So, whereas zero-field intralayer transport is sensitive only to the momentum-averaged scattering probability (the transport relaxation rate), the resistivity perpendicular to layers measured in a tilted magnetic field provides detailed information about the momentum-dependence of interlayer scattering. These results help us to clarify the meaning of the relaxation rate determined from fits of angular-dependent magnetoresistance oscillations (AMROs) experimental data to theoretical expressions. Furthermore, we suggest how AMRO might be used to probe the dominant scattering mechanism.
Keyword High magnetic fields
Fermi-surface
Temperature superconductor
Semiclassical description
Organic superconductors
Band structure
Conductors
Transport
Coherent
Q-Index Code C1
Q-Index Status Confirmed Code
Additional Notes Article Number: 235123

 
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Created: Fri, 03 Apr 2009, 22:02:01 EST by Jo Hughes on behalf of School of Mathematics & Physics