Magnetic oscillations in a two-dimensional network of compensated electron and hole orbits

Details Magnetic oscillations in a two-dimensional network of compensated electron and hole orbits Magnetic oscillations in a two-dimensional network of compensated electron and hole orbits

2005-06-29

arxiv.org/abs/cond-mat/0506764v1

Physics

Condensed Matter

Strongly Correlated Electrons

accepted for publication in europhysics Letters

Scientific paper

10.1209/epl/i2005-10145-8

The FS of (ET)8Hg4Cl12(C6H5Br)2 can be regarded as a 2D network of compensated electron and hole orbits coupled by magnetic breakthrough. Simultaneous measurements of the interlayer magnetoresistance and magnetic torque have been performed up to 28 T. Magnetoresistance and de dHvA oscillations spectra exhibit frequency combinations typical of such a network. Even though some of the observed magnetoresistance oscillations cannot be interpreted on the basis of neither conventional SdH oscillations nor quantum interference, the temperature and magnetic field (both orientation and magnitude) dependence of all the Fourier components of the dHvA spectra can be consistently accounted for by the LK formula. This behaviour is at variance with that currently reported for compounds illustrating the linear chain of coupled orbits model.

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