Angle-dependent magnetoresistance oscillations due to magnetic breakdown orbits

A. F. Bangura; P. A. Goddard; J. Singleton; S. W. Tozer; A. I. Coldea; A. Ardavan; R. D. McDonald; S. J. Blundell; J. A. Schlueter

doi:10.1103/PhysRevB.76.052510

Angle-dependent magnetoresistance oscillations due to magnetic breakdown orbits

Strongly Correlated Electrons 2009-11-13 v2 Superconductivity

Authors: A. F. Bangura , P. A. Goddard , J. Singleton , S. W. Tozer , A. I. Coldea , A. Ardavan , R. D. McDonald , S. J. Blundell , J. A. Schlueter

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Abstract

We present experimental evidence for a hitherto unconfirmed type of angle-dependent magnetoresistance oscillation caused by magnetic breakdown. The effect was observed in the organic superconductor kappa-(BEDT-TTF) $_2$ Cu(NCS) $_2$ using hydrostatic pressures of up to 9.8 kbar and magnetic fields of up to 33 T. In addition, we show that similar oscillations are revealed in ambient pressure measurements, provided that the Shubnikov-de Haas oscillations are suppressed either by elevated temperatures or filtering of the data. These results provide a compelling validation of Pippard's semiclassical picture of magnetic breakdown.

Keywords

magnetoresistance magnetization two-dimensional electron gas

Cite

@article{arxiv.cond-mat/0702570,
  title  = {Angle-dependent magnetoresistance oscillations due to magnetic breakdown orbits},
  author = {A. F. Bangura and P. A. Goddard and J. Singleton and S. W. Tozer and A. I. Coldea and A. Ardavan and R. D. McDonald and S. J. Blundell and J. A. Schlueter},
  journal= {arXiv preprint arXiv:cond-mat/0702570},
  year   = {2009}
}

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4 pages, 3 figures Version 2

Angle-dependent magnetoresistance oscillations due to magnetic breakdown orbits

Abstract

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