Magnetic-field-enhanced incommensurate magnetic order in the underdoped high-temperature superconductor YBa(2)Cu(3)O(6.45)

D. Haug , V. Hinkov , A. Suchaneck , D. S. Inosov , N. B. Christensen , Ch. Niedermayer , P. Bourges , Y. Sidis

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J. T. Park A. Ivanov C. T. Lin J. Mesot B. Keimer

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classification ❄️ cond-mat.str-el cond-mat.supr-con

keywords magneticfermihigh-temperatureincommensurateorderstaticsuperconductorsurface

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We present a neutron-scattering study of the static and dynamic spin correlations in the underdoped high-temperature superconductor YBa(2)Cu(3)O(6.45) 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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Magnetic-field-enhanced incommensurate magnetic order in the underdoped high-temperature superconductor YBa(2)Cu(3)O(6.45)

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