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Showing 1–6 of 6 results
Advanced filters: Author: S. M. Koohpayeh Clear advanced filters

  • The archetypal transverse Ising magnet CoNb2O6possesses a set of collective spin modes near its quantum critical point. Here, the authors use heat capacity measurements to evidence the existence of Fermionic gapless spin excitations at the critical point.

    • Tian Liang
    • S. M. Koohpayeh
    • N. P. Ong
    ResearchOpen Access
    Nature Communications
    Volume: 6, P: 1-7

  • In geometrically frustrated magnets, long-range magnetic order is typically suppressed, whereas at the same time non-trivial spin correlations are observed. Using time-domain terahertz spectroscopy, the authors find evidence for extended quantum string-like excitations in the quantum spin ice material Yb2Ti2O7.

    • LiDong Pan
    • Se Kwon Kim
    • N. P. Armitage
    Research
    Nature Communications
    Volume: 5, P: 1-7

  • Although attempts to identify magnetic monopoles in free space have been unsuccessful, monopole-like particles with classical dynamics have been reported in magnetic materials called spin ice. Kimura et al. identify quantum fluctuations of monopolar character in a new type of spin ice, Pr2Zr2O7

    • K. Kimura
    • S. Nakatsuji
    • H. Sawa
    Research
    Nature Communications
    Volume: 4, P: 1-6

  • The family of pyrochlore complex oxides includes many materials of fundamental or practical interest, such as spin ices and dielectrics. Trump et al. show that flexibility of the pyrochlores’ structure leads to local displacements that explain some of their unusual physical properties.

    • B. A. Trump
    • S. M. Koohpayeh
    • T. M. McQueen
    ResearchOpen Access
    Nature Communications
    Volume: 9, P: 1-10

  • A terahertz spectroscopic study of the quasi-one-dimensional ferromagnet CoNb2O6 reveals bond-dependent interactions in this material that are similar to those of a one-dimensional version of the honeycomb Kitaev spin liquid.

    • C. M. Morris
    • Nisheeta Desai
    • N. P. Armitage
    Research
    Nature Physics
    Volume: 17, P: 832-836