{"title":"The magnetic properties of a doped asymmetric GaAs double quantum dot in electromagnetic fields","authors":"Khaled Abdulhaq, Mohammad Elsaid, Diana Dahliah","doi":"10.1140/epjp/s13360-026-08332-x","DOIUrl":null,"url":null,"abstract":"<div><p>The eigenenergies of an electron that confined within an asymmetric double quantum dots (DQD) have been solved via the exact diagonalization method. The model includes the effects of the existence of donor/acceptor impurity and the presence of external electric and magnetic fields. The influence of localization, strength and the position of the Gaussian impurity on the magnetic properties has been investigated as a function of the magnetic and electric fields. The results show a transition from paramagnetic to diamagnetic behavior at low temperatures due to the impurity presence. The previous parameters of the Gaussian impurity have modified the magnetic transition temperature. As the strength of the impurity increases, the paramagnetic diamagnetic transition occurs at a lower temperature.</p></div>","PeriodicalId":792,"journal":{"name":"The European Physical Journal Plus","volume":"141 10","pages":""},"PeriodicalIF":2.9000,"publicationDate":"2026-10-02","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/s13360-026-08332-x","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
The eigenenergies of an electron that confined within an asymmetric double quantum dots (DQD) have been solved via the exact diagonalization method. The model includes the effects of the existence of donor/acceptor impurity and the presence of external electric and magnetic fields. The influence of localization, strength and the position of the Gaussian impurity on the magnetic properties has been investigated as a function of the magnetic and electric fields. The results show a transition from paramagnetic to diamagnetic behavior at low temperatures due to the impurity presence. The previous parameters of the Gaussian impurity have modified the magnetic transition temperature. As the strength of the impurity increases, the paramagnetic diamagnetic transition occurs at a lower temperature.
期刊介绍：
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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