Critical properties of the quantum rotor model with phase frustration at incommensurate filling in two dimensions
- Title
- Critical properties of the quantum rotor model with phase frustration at incommensurate filling in two dimensions
- Author
- 차민철
- Keywords
- Quantum phase transition; Critical exponent; Scaling; SUPERCONDUCTOR-INSULATOR TRANSITION; JOSEPHSON-JUNCTION ARRAYS; MAGNETIC-FIELD; UNIVERSAL CONDUCTIVITY; SPHERICAL LIMIT
- Issue Date
- 2016-10
- Publisher
- KOREAN PHYSICAL SOC
- Citation
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v. 69, No. 7, Page. 1152-1156
- Abstract
- The critical properties of the zero-temperature superfluid-insulator transition in the fullyfrustrated quantum rotor model at incommensurate filling in two dimensions are studied. We develop a spherical approximation scheme for the model with phase frustration f = 1/2 by choosing a primitive unit cell composed of two sites. The finite-size scaling behavior of various physical quantities in the spherical limit provides the correlation length critical exponent nu = 0.5 and the dynamical critical exponent z = 2, which are consistent with the scenario of the generic superfluidinsulator transition even in the presence of phase frustration.
- URI
- https://link.springer.com/article/10.3938%2Fjkps.69.1152https://repository.hanyang.ac.kr/handle/20.500.11754/70363
- ISSN
- 0374-4884; 1976-8524
- DOI
- 10.3938/jkps.69.1152
- Appears in Collections:
- COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E](과학기술융합대학) > PHOTONICS AND NANOELECTRONICS(나노광전자학과) > Articles
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