Approaching the bond-nematic quantum critical region in a 2D square lattice magnet
Frustrated square-lattice antiferromagnets with competing interactions J1 and J2 are prototypical model system to study complex magnetic correlations. For the generalised J1-J2 model including ferromagnetic interactions new spin-liquid and bond-nematic phases are predicted by theory. We have been able to synthesize the compound BaCdVO(PO4)2 and recently proved on D7 that it lies right on the border of a columnar antiferromagnetic phase with the spin-nematic phase. Here we propose to investigate the magnetic excitations of this unique material and characterize the nature of its quantum fluctuations. A way of driving this material right inside the spin-nematic phase is also described. As a future plan, this phase will then be accessible to us with the new 10T option of IN5 in the coming year.
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SKOULATOS MARKOS; GOFF Jonathan P.; OLLIVIER Jacques; RUEEGG Christian; SCHMIDT Burkhard; SHANNON Nicholas and SMERALD Andrew. (2014). Approaching the bond-nematic quantum critical region in a 2D square lattice magnet. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.4-01-1394
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