{"title":"Effects of parameter change on spin reversal in decorated nanoislands","authors":"Sheng Chen, Yanyi Wu, Xin Chang, Baohua Teng","doi":"10.1140/epjp/s13360-025-06134-1","DOIUrl":null,"url":null,"abstract":"<div><p>Based on transverse-field Ising model, we investigated the flipping phenomenon of a decorated nanoisland system with spin-1/2 using the decoupling approximation of Fermi-type Green’s function. The results reveal that, under the conditions of relatively weak surface exchange interaction <i>J</i><sub><i>S</i></sub><i>/J</i> and transverse-field <i>Ω/J</i>, the system exhibits spin reversal during the heating process. Decorative exchange interaction <i>J</i><sub><i>D</i></sub><i>/J</i> only affects the details of the phase transition properties, and the temperature at which spin reversal occurs can still be qualitatively analyzed based on the mean-field phase diagram.</p></div>","PeriodicalId":792,"journal":{"name":"The European Physical Journal Plus","volume":"140 3","pages":""},"PeriodicalIF":2.8000,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"The European Physical Journal Plus","FirstCategoryId":"4","ListUrlMain":"https://link.springer.com/article/10.1140/epjp/s13360-025-06134-1","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSICS, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Based on transverse-field Ising model, we investigated the flipping phenomenon of a decorated nanoisland system with spin-1/2 using the decoupling approximation of Fermi-type Green’s function. The results reveal that, under the conditions of relatively weak surface exchange interaction JS/J and transverse-field Ω/J, the system exhibits spin reversal during the heating process. Decorative exchange interaction JD/J only affects the details of the phase transition properties, and the temperature at which spin reversal occurs can still be qualitatively analyzed based on the mean-field phase diagram.
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The aims of this peer-reviewed online journal are to distribute and archive all relevant material required to document, assess, validate and reconstruct in detail the body of knowledge in the physical and related sciences.
The scope of EPJ Plus encompasses a broad landscape of fields and disciplines in the physical and related sciences - such as covered by the topical EPJ journals and with the explicit addition of geophysics, astrophysics, general relativity and cosmology, mathematical and quantum physics, classical and fluid mechanics, accelerator and medical physics, as well as physics techniques applied to any other topics, including energy, environment and cultural heritage.
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