近藤杂质的基态磁感应强度

IF 1.2 4区综合性期刊 Q3 MULTIDISCIPLINARY SCIENCES

Kuwait Journal of Science Pub Date : 2024-06-05 DOI:10.1016/j.kjs.2024.100269

Bedoor Alkurtass

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引用次数: 0

摘要

杂质模型描述了与电子自旋相互作用的局部杂质。强相关性会导致模型的非微观行为。在这项研究中，我们提出了 3 种不同的杂质模型：（1）单杂质近藤模型；（2）双杂质近藤模型；（3）双通道近藤模型。对于每个模型，我们都提出了一个自旋链模拟，并利用了密度矩阵重正化群（DMRG）。我们研究了施加局部磁场时杂质的磁化和零温电感。我们从理论上得到了预期的关系。

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Ground state magnetic susceptibility of Kondo impurities

Impurity models describe localized impurities interacting with the spins of electrons. Strong correlations lead to non-trivial behaviours of the model. In this work we present 3 different impurity models: (1) the single-impurity Kondo model; (2) the two-impurity Kondo model; (3) the two-channel Kondo model. For each model we present a spin chain emulation and utilize the density matrix renormalization group (DMRG). We study the magnetization and zero-temperature susceptibility of the impurity when a local magnetic field is applied. We get the expected relations theoretically.

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来源期刊

Kuwait Journal of Science MULTIDISCIPLINARY SCIENCES-

CiteScore

1.60

自引率

28.60%

发文量

132

期刊介绍： Kuwait Journal of Science (KJS) is indexed and abstracted by major publishing houses such as Chemical Abstract, Science Citation Index, Current contents, Mathematics Abstract, Micribiological Abstracts etc. KJS publishes peer-review articles in various fields of Science including Mathematics, Computer Science, Physics, Statistics, Biology, Chemistry and Earth & Environmental Sciences. In addition, it also aims to bring the results of scientific research carried out under a variety of intellectual traditions and organizations to the attention of specialized scholarly readership. As such, the publisher expects the submission of original manuscripts which contain analysis and solutions about important theoretical, empirical and normative issues.