Wednesday, July 3, 2013

1307.0019 (R. L. Stillwell et al.)

Pressure Driven Fermi surface reconstruction of chromium    [PDF]

R. L. Stillwell, D. E. Graf, W. A. Coniglio, T. P. Murphy, E. C. Palm, J. H. Park, D. VanGennep, P. Schlottmann, S. W. Tozer
We have observed a massive reconstruction of the Fermi surface of single crystal chromium as a function of high pressure and high magnetic fields, with multiple new orbits appearing above 0.93 GPa. Additionally, some orbits have field-induced effective masses of ~0.06-0.07 me, seen only at high magnetic fields. Based on the temperature insensitivity displayed by the oscillation amplitudes at these frequencies, we attribute the orbits to quantum interference rather than Landau quantization.
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