A multi-component Fermi surface in the vortex state of an underdoped high-Tc superconductor

Suchitra E. Sebastian (), N. Harrison, E. Palm, T. P. Murphy, C. H. Mielke, Ruixing Liang, D. A. Bonn, W. N. Hardy and G. G. Lonzarich
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Suchitra E. Sebastian: Cavendish Laboratory, Cambridge University, JJ Thomson Avenue, Cambridge CB3 OHE, UK
N. Harrison: National High Magnetic Field Laboratory, Los Alamos National Laboratory, MS E536, Los Alamos, New Mexico 87545, USA
E. Palm: National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32306, USA
T. P. Murphy: National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32306, USA
C. H. Mielke: National High Magnetic Field Laboratory, Los Alamos National Laboratory, MS E536, Los Alamos, New Mexico 87545, USA
Ruixing Liang: University of British Columbia
D. A. Bonn: University of British Columbia
W. N. Hardy: University of British Columbia
G. G. Lonzarich: Cavendish Laboratory, Cambridge University, JJ Thomson Avenue, Cambridge CB3 OHE, UK

Nature, 2008, vol. 454, issue 7201, 200-203

Abstract: Fermi surfaces in superconductivity Recent quantum oscillation experiments on high transition temperature (Tc) copper oxide superconductors have revealed the existence of a Fermi surface akin to that in normal metals, comprising fermionic carriers that undergo orbital quantization. The unexpectedly small size of the observed carrier pocket, however, leaves open a variety of possibilities for the existence or form of any underlying magnetic order, and its relation to d-wave superconductivity. Sebastian et al. report experiments on YBa2Cu3O6.51 that reveal more than one carrier pocket. They find evidence for the existence of a much larger pocket of heavier mass carriers playing a thermodynamically dominant role in this hole-doped superconductor.

Date: 2008
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DOI: 10.1038/nature07095

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