Spin-lattice coupling induced phase transition in theS=2 frustrated antiferromagnet CuMnO<sub>2</sub>
hal.structure.identifier | Laboratoire Léon Brillouin [LLB - UMR 12] | |
dc.contributor.author | DAMAY, Françoise | |
hal.structure.identifier | Laboratoire de cristallographie et sciences des matériaux [CRISMAT] | |
dc.contributor.author | POIENAR, Maria | |
hal.structure.identifier | Laboratoire de cristallographie et sciences des matériaux [CRISMAT] | |
dc.contributor.author | MARTIN, Christine | |
hal.structure.identifier | Laboratoire de cristallographie et sciences des matériaux [CRISMAT] | |
dc.contributor.author | MAIGNAN, Antoine | |
hal.structure.identifier | Institut Laue-Langevin [ILL] | |
dc.contributor.author | RODRIGUEZ-CARJAVAL, Juan | |
hal.structure.identifier | Laboratoire Léon Brillouin [LLB - UMR 12] | |
dc.contributor.author | ANDRÉ, Gilles | |
hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
dc.contributor.author | DOUMERC, Jean-Pierre | |
dc.date.issued | 2009 | |
dc.identifier.issn | 1098-0121 | |
dc.description.abstractEn | The crystal and magnetic structures of the layered oxide crednerite CuMnO2 have been studied by neutron powder diffraction. In this system, which is topologically representative of a frustrated square lattice with nearest (J1) and diagonal next-nearest- (J2) neighbor interactions, three-dimensional antiferromagnetic ordering is observed below TN=65 K, with propagation vector k1=(−1/21/21/2). Frustration is relieved through a strong magnetoelastic coupling to the lattice, evidenced by a structural phase transition from a monoclinic (C2/m) to a strained triclinic C1̅ phase as magnetic order sets in. The magnetic order observed, which is described as spins antiferromagnetically aligned along [1-1 0] and ferromagnetically aligned along [1 1 0], corresponds to the so-called collinear antiferromagnetic order predicted for a frustrated two-dimensional antiferromagnetic Heisenberg model on a square lattice for J2/J1>0.5 in the presence of spin-lattice coupling. | |
dc.language.iso | en | |
dc.publisher | American Physical Society | |
dc.title.en | Spin-lattice coupling induced phase transition in theS=2 frustrated antiferromagnet CuMnO<sub>2</sub> | |
dc.type | Article de revue | |
dc.identifier.doi | 10.1103/PhysRevB.80.094410 | |
dc.subject.hal | Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci] | |
bordeaux.journal | Physical Review B: Condensed Matter and Materials Physics (1998-2015) | |
bordeaux.page | 094410 | |
bordeaux.volume | 80 | |
bordeaux.issue | 9 | |
bordeaux.peerReviewed | oui | |
hal.identifier | hal-00498055 | |
hal.version | 1 | |
hal.popular | non | |
hal.audience | Internationale | |
hal.origin.link | https://hal.archives-ouvertes.fr//hal-00498055v1 | |
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