Abstract
We report on a study of electronic transport in semimetallic . At zero field, the system is a very dilute Fermi liquid displaying a resistivity with an enhanced prefactor. Quantum oscillations in resistivity as well as in Hall, Nernst, and Seebeck responses of the system are detectable and their period quantifies the shrinking of the Fermi surface with antimony doping. For a field along the trigonal axis, the quantum limit was found to occur at a field as low as 3 T. An ultraquantum anomaly at twice this field was detected in both charge transport and Nernst response. Its origin appears to lie beyond the one-particle picture and linked to unidentified many-body effects.
- Received 9 September 2008
DOI:https://doi.org/10.1103/PhysRevB.78.161103
©2008 American Physical Society
Synopsis
Unexpected response
Published 17 November 2008
The transport anomalies found in a bismuth alloy under moderate magnetic field might be the signature of unexpected many-body physics.
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