Magnetic Excitations in spin 1/2 Ising-like antiferromagnet BaCo2V2O8 under a transverse magnetic field.
We plan to study the magnetic excitation of the quasi-1D Ising antiferromagnet BaCo2V2O8 under a transverse magnetic field (applied perpendicular to the moment direction) on the triple-axis IN12 spectrometer using the 12 T vertical cryomagnet. This remarkable material has already revealed transverse and longitudinal discrete modes resulting from the confinement of spinons in zero magnetic field. We have also studied their evolution under an external magnetic field applied along the moment direction allowing to access a new phase ascribable to the Tomonaga-Luttingher spin liquid physics. The present project aims at unraveling the field-induced behavior of these unconventional excitations, when submitted to an external transverse magnetic field, through the quantum phase transition towards the paramagnetic quantum phase.
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GRENIER Beatrice; FAURE Quentin; PETIT Sylvain; RAYMOND Stephane; REGNAULT Louis Pierre and SIMONET Virginie. (2015). Magnetic Excitations in spin 1/2 Ising-like antiferromagnet BaCo2V2O8 under a transverse magnetic field.. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.4-03-1719
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