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024 7 _ |a 10.1103/PhysRevLett.122.077601
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037 _ _ |a FZJ-2020-03850
082 _ _ |a 530
100 1 _ |a Chen, Chuang
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245 _ _ |a Charge-Density-Wave Transitions of Dirac Fermions Coupled to Phonons
260 _ _ |a College Park, Md.
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520 _ _ |a The spontaneous generation of charge-density-wave order in a Dirac fermion system via the natural mechanism of electron-phonon coupling is studied in the framework of the Holstein model on the honeycomb lattice. Using two independent and unbiased quantum Monte Carlo methods, the phase diagram as a function of temperature and coupling strength is determined. It features a quantum critical point as well as a line of thermal critical points. Finite-size scaling appears consistent with fermionic Gross-Neveu-Ising universality for the quantum phase transition and bosonic Ising universality for the thermal phase transition. The critical temperature has a maximum at intermediate couplings. Our findings motivate experimental efforts to identify or engineer Dirac systems with sufficiently strong and tunable electron-phonon coupling.
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536 _ _ |a Numerical simulations of strongly correlated electron systems. (hwb03_20190501)
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700 1 _ |a Xu, Xiao Yan
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700 1 _ |a Meng, Zi Yang
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700 1 _ |a Hohenadler, Martin
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773 _ _ |a 10.1103/PhysRevLett.122.077601
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