期刊
PHYSICAL REVIEW B
卷 105, 期 21, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.105.214520
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资金
- Carl Trygger Foundation [CTS 20:75]
- Swedish Research Council [2016-06122, 2018-03659]
A bosonic metallic state that breaks the Z2 time-reversal symmetry has been detected recently in Ba1???xKxFe2As2. Monte Carlo simulations were conducted to investigate the emergence of this phase in a two-component London model.
Detection of a bosonic metallic state that breaks the Z2 time-reversal symmetry has been recently reported in Ba1???xKxFe2As2 with a doping level x ??? 0.8. This is a metallic state of fermionic quadruplets that breaks time-reversal symmetry. As such, it has no condensed Cooper pairs but has a long-range order between fermionic quartets. In the present paper, we investigate the emergence of this phase in a two-component London model via Monte Carlo simulations as a function of various intercomponent couplings.
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