Determining the magnetic field induced spin density wave structure in SrCo2V2O8
The low-energy magnetic excitations in the disordered state of an antiferromagnetic (AFM) Heisenberg-Ising spin-1/2 chain are often characterised by the renowned Tomonaga-Luttinger liquid (TLL) theory, which features two critical fluctuation modes, one longitudinal and the other transverse, in the intermediate and high magnetic field regions. Over the past few decades, the TLL theory has been commonly employed to understand the magnetic properties in quasi-one-dimensional quantum magnets. Recently, other novel quasi particles that can be directly obtained from the Bethe ansatz, e.g. (anti)psinons and Bethe strings, have been observed, which, in our opinion, inspire revisiting of some peculiar behaviors in relevant systems that cannot be well addressed in the framework of the TLL theory. This proposal aims to determine the magnetic field induced spin density wave structure in SrCo2V2O8. Previously, this state has been attributed to the condensation of the longitudinal TLL mode in the presence of interchain interaction. However, our preliminary results evidence a non-negligible in-plane magnetic moment and thus call for a more careful comparison with the TLL theory in this phase.
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SHEN Lingjia; Ahmed Alshemi; BLACKBURN Elizabeth; CAMPILLO Emma; OULADDIAF Bachir and Denis M. Vasiukov. (2020). Determining the magnetic field induced spin density wave structure in SrCo2V2O8. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-41-1020
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