scholarly journals Antiferromagnetism Induced by Bond Su-Schrieffer-Heeger Electron-Phonon Coupling: A Quantum Monte Carlo Study

2021 ◽  
Vol 127 (24) ◽  
Author(s):  
Xun Cai ◽  
Zi-Xiang Li ◽  
Hong Yao
Keyword(s):  
Monte Carlo ◽  
Quantum Monte Carlo ◽  
Monte Carlo Study ◽  
Phonon Coupling ◽  
Electron Phonon Coupling

scholarly journals Critical Behavior of Heisenberg Chains Coupled to Phonons

2019 ◽  
Author(s):  
Rainer Kühne
Keyword(s):  
Monte Carlo ◽  
Critical Behavior ◽  
Quantum Monte Carlo ◽  
Phonon Frequency ◽  
Monte Carlo Study ◽  
Universality Class ◽  
Coupling Constant ◽  
Heisenberg Chain ◽  
Phonon Coupling ◽  
Heisenberg Chains

We present a quantum Monte Carlo study for the isotropic antiferromagnetic Heisenberg chain coupled to Einstein phonons. By investigating the behavior of the correlation length we find the critical exponent to depend on both the phonon frequency and the spin-phonon coupling constant. Hence, these systems change the universality class continuously with the spin-phonon coupling.

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