Emergence of nematic paramagnet via quantum order-by-disorder and pseudo-Goldstone modes in Kitaev magnets
Matthias Gohlke, Li Ern Chern, Hae‐Young Kee, Yong Baek Kim
Abstract
The authors investigate the $K\phantom{\rule{0}{0ex}}\mathrm{\ensuremath{\Gamma}}\phantom{\rule{0}{0ex}}{\mathrm{\ensuremath{\Gamma}}}^{\ensuremath{'}}$ model in a magnetic field along $[111]$. Quantum order-by-disorder gives rise to a nematic paramagnetic phase, that breaks lattice-rotational symmetry spontaneously and exhibits a characteristic pseudo-Goldstone mode.
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