Volume 123, Number 6, September 2018
|Number of page(s)||7|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||23 October 2018|
Quantum spin superfluid from Bose-Einstein condensation of spinons in pyrochlore spin ice
Department of Electrical Engineering, 17 August 1945 University - 45 Semolowaru Street, Surabaya, East Java 60118, Indonesia
Received: 11 August 2018
Accepted: 14 September 2018
Quantum spin ice in pyrochlore lattice exemplifies three-dimensional frustrated spin systems. In existing studies, Bose-Einstein condensation of bosonic spinons gives rise to magnetically ordered ground state. A truly liquid quantum spin superfluid state that manifests a deconfined Higgs condensate of spinons is demonstrated. This state is shown to occur in the fully antiferromagnetic case of the non-Kramers quantum spin ice with a fluctuation-induced first-order quantum phase transition from the U(1) spin liquid to the spin superfluid. The spin superfluid density jump is obtained analytically.
PACS: 75.10.Kt – Quantum spin liquids, valence bond phases and related phenomena / 75.10.Jm – Quantized spin models, including quantum spin frustration / 75.10.Hk – Classical spin models
© EPLA, 2018
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