Magnetic-Field-Enhanced Incommensurate Magnetic Order in the Underdoped High-Temperature Superconductor YBa2Cu3O6.45
- Haug, D.
- Hinkov, V.
- Suchaneck, A.
- Inosov, D. S.
- Christensen, N. B.
- Niedermayer, Ch.
- Bourges, P.
- Sidis, Y.
- Park, J. T.
- Ivanov, A.
- Lin, C. T.
- Mesot, J.
- Keimer, B.
Publication date
November 2010
DOI Publisher
American Physical Society (APS)Abstract
We present a neutron-scattering study of the static and dynamic spin correlations in the underdoped high-temperature superconductor YBa2Cu3O6.45 in magnetic fields up to 15 T. The field strongly enhances static incommensurate magnetic order at low temperatures and induces a spectral-weight shift in the magnetic-excitation spectrum. A reconstruction of the Fermi surface driven by the field-enhanced magnetic superstructure may thus be responsible for the unusual Fermi surface topology revealed by recent quantum-oscillation experiments
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