铁基超导体的热力学磁场和比热跃变的二波段金兹堡-朗道方法

IF 0.2 Q4 MULTIDISCIPLINARY SCIENCES

Suranaree Journal of Science and Technology Pub Date : 2023-10-09 DOI:10.55766/sujst-2023-04-e02443

Arpapong Changjan, Atirat Maksuwan, Phanuchai Pramuanl, Suppanyou Meakniti, Pongkaew Udomsamuthirun

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引用次数: 0

摘要

本研究利用双波段金兹堡-朗道理论研究了铁基超导体的温度依赖热力学磁场和比热跃变。利用四种温度相关模型研究了热力学磁场的解析形式;陈的模型，朱的模型，沙南科的模型和张健的模型;Udomsamuthirun的模型。对于比热跃的计算，我们使用了Ruthgers表达式。计算结果表明，临界温度与比热跃变呈反比关系。与各种模型相比，Changjan和Udomsamuthirun模型的结果更符合Ba1-xKxFe2As2 (x = 0.4)和KFe2As2超导体的实验数据

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THERMODYNAMIC MAGNETIC FIELD AND SPECIFIC HEAT JUMP OF IRON-BASED SUPERCONDUCTOR BY TWO-BAND GINZBURG-LANDAU APPROACH

In this research, temperature-dependent thermodynamic magnetic field and specific heat jump of Fe-based superconductor were studied by two-band Ginzburg-Landau theory. The analytical form of the thermodynamic magnetic field was investigated by four temperature-dependent models; Chen’s model, Zhu’s model, Shanenko’s model and Changjan & Udomsamuthirun’s model. For the calculation of specific heat jump, we use the Ruthgers expression. Calculation findings indicate an inverse relationship between the critical temperature and the specific heat jump. When compared with various models, the results from Changjan and Udomsamuthirun's models suit experimental data of Ba1-xKxFe2As2 (x = 0.4) and KFe2As2 superconductors better

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来源期刊

Suranaree Journal of Science and Technology MULTIDISCIPLINARY SCIENCES-

CiteScore

0.30

自引率

50.00%

发文量