Ferroelectricity induced by acentric spin-density waves in YMn$_2$O$_5$
ArXiv cond-mat/0511174 (2005)
Abstract:
The commensurate and incommensurate magnetic structures of the magnetoelectric system YMn$_{2}$O$_{5}$, as determined from neutron diffraction, were found to be spin-density waves lacking a global center of symmetry. We propose a model, based on a simple magneto-elastic coupling to the lattice, which enables us to predict the polarization based entirely on the observed magnetic structure. Our data accurately reproduce the temperature-dependence of the spontaneous polarization, in particular its sign reversal at the commensurate-incommensurate transition.Crystal structure of the superconducting layered cobaltite NaxCoO2.yD2O
Acta Crystallographica Section A: Foundations and advances International Union of Crystallography (IUCr) 61:a1 (2005) c100-c101
ISIS crystallography on TS-II: what can we do with 60 kW?
Acta Crystallographica Section A: Foundations and advances International Union of Crystallography (IUCr) 61:a1 (2005) c98-c98
The phase diagram of Ca2-xSrxRuO4: crystal structure and physical properties
Acta Crystallographica Section A: Foundations and advances International Union of Crystallography (IUCr) 61:a1 (2005) c13-c13
Materials Research Society Symposium Proceedings: Preface
Materials Research Society Symposium Proceedings 840 (2005)