铁基超导体温度随表面临界磁场的研究

IF 0.2 Q4 MULTIDISCIPLINARY SCIENCES

Suranaree Journal of Science and Technology Pub Date : 2023-10-09 DOI:10.55766/sujst-2023-04-e02414

Thitipong Kruaehong, Suppanyou Meakniti, Pongkaew Udomsamuthirun, Arpapong Changjan

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引用次数: 0

摘要

上临界磁场(Hc2)是超导体在外磁场中的重要性质之一。磁场强度越高，超导性越强。而表面临界磁场(Hc3)大于Hc3与Hc2之比一定时的上临界磁场。本研究采用金兹堡-朗道各向异性双带方法研究了铁基超导体的表面临界磁场。用四种温度相关模型计算了表面临界磁场。给出了表面临界磁场的解析公式，得到了温度参数。最后，将数值计算应用于铁基超导体的实验数据

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THE STUDY ON TEMPERATURE-DEPENDENT SURFACE CRITICAL MAGNETIC FIELD OF IRON-BASED SUPERCONDUCTORS

The upper critical magnetic field (Hc2) is one of the important properties of superconductors in external magnetic field. The higher magnetic field strength, the more superconductivity is maintained. However, the surface critical magnetic field (Hc3) is larger than upper critical magnetic field which the ratio of Hc3 to Hc2 is constant. In this study, we investigated the surface critical magnetic field of the iron-based superconductor using Ginzburg-Landau’s anisotropic two-band method. The surface critical magnetic field was calculated with four temperature-dependent models. Our analytical formula of the surface critical magnetic field obtains the temperature parameters. Finally, the numerical calculation was applied to the experimental data of iron-based superconductors

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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