Search for new low energy magnetic excitations in superconducting cuprates
Using polarized neutron scattering diffraction, a new long range intra-unit-cell magnetic order has been recently discovered in the pseudogap state of high temperature superconducting cuprates. This phase has been reported for three cuprates and is likely to to be a genuine properties of superconducting cuprates. It could be associated with the spontaneous appearance of circulating current loops as proposed in the pseudogap theory of C. M. Varma. Within this theory, their fluctuations control the non-Fermi liquid properties in the normal state and superconducting pairing. We have recently observed new low energy magnetic response which could be related to these fluctuations and we would like to study their momentum, energy and temperature dependencies in detail.
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MANGIN-THRO Lucile; Bourges; SIDIS Yvan and STEFFENS Paul. (2013). Search for new low energy magnetic excitations in superconducting cuprates. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.4-01-1244
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