Please use this identifier to cite or link to this item: https://doi.org/10.1209/epl/i2005-10293-9
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dc.titleTransition regions in the parameter space based on the transverse Ising model with a four-spin interaction
dc.contributor.authorTeng, B.H.
dc.contributor.authorSy, H.K.
dc.date.accessioned2014-10-16T09:47:05Z
dc.date.available2014-10-16T09:47:05Z
dc.date.issued2005-12-01
dc.identifier.citationTeng, B.H., Sy, H.K. (2005-12-01). Transition regions in the parameter space based on the transverse Ising model with a four-spin interaction. Europhysics Letters 72 (5) : 823-829. ScholarBank@NUS Repository. https://doi.org/10.1209/epl/i2005-10293-9
dc.identifier.issn02955075
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/98437
dc.description.abstractBy taking into account the four-spin interaction in the transverse Ising model (TIM), the transition feature of the ferroelectric thin film is investigated within the framework of the Green's function technique. Various transition regions in the parameter space with respect to the ratios of the tunneling frequency and the four-spin interaction to the two-spin interaction are calculated by a higher-order decoupling approximation beyond the usual mean-field approximation. The results show that the transition regions are greatly different from the ones obtained within the framework of the mean-field approximation. It is suggested that the usual mean-field approximation exaggerates not only the second-order but also the first-order ferroelectric transition regions for a ferroelectric thin film. © EDP Sciences.
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentPHYSICS
dc.description.doi10.1209/epl/i2005-10293-9
dc.description.sourcetitleEurophysics Letters
dc.description.volume72
dc.description.issue5
dc.description.page823-829
dc.identifier.isiut000233658700021
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