Quantum phase transitions and decoupling of magnetic sublattices in the quasi-two-dimensional Ising magnet Co3 V2 O8 in a transverse magnetic field

K. Fritsch, G. Ehlers, K. C. Rule, K. Habicht, M. Ramazanoglu, H. A. Dabkowska, B. D. Gaulin

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    10 Scopus citations

    Abstract

    The application of a magnetic field transverse to the easy axis, Ising direction in the quasi-two-dimensional kagome staircase magnet, Co3V2O8, induces three quantum phase transitions at low temperatures, ultimately producing a novel high field polarized state, with two distinct sublattices. New time-of-flight neutron scattering techniques, accompanied by large angular access, high magnetic field infrastructure allow the mapping of a sequence of ferromagnetic and incommensurate phases and their accompanying spin excitations. At least one of the transitions to incommensurate phases at μ0Hc1∼6.25 T and μ0Hc2∼7 T is discontinuous, while the final quantum critical point at μ0Hc3∼13 T is continuous.

    Original languageEnglish
    Article number180404
    JournalPhysical Review B - Condensed Matter and Materials Physics
    Volume92
    Issue number18
    DOIs
    StatePublished - Nov 5 2015

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