Shubnikov-de haas effect in the metallic state of Na0.3CoO2
Journal
Physical Review Letters
Journal Volume
97
Journal Issue
12
Date Issued
2006
Author(s)
Balicas, L.
Analytis, J. G.
Jo, Y. J.
Storr, K.
Zandbergen, H.
Xin, Y.
Hussey, N. E.
Lee, P. A.
Abstract
Shubnikov-de Haas oscillations for two well-defined frequencies, corresponding, respectively, to areas of 0.8 and 1.36% of the first Brillouin zone, were observed in single crystals of Na(0.3)CoO2. The existence of Na superstructures in Na0.3CoO2, coupled with this observation, suggests the possibility that the periods are due to the reconstruction of the large Fermi surface around the Gamma point. An alternative interpretation in terms of the long sought-after epsilon'(g) pockets is also considered but found to be incompatible with existing specific heat data.
Type
journal article