Investigation of the quasi-one-dimensional superconducting state based on high-resolution field-angle-resolved calorimetory

基于高分辨率场角分辨量热法的准一维超导态研究

• 批准号: 21740253
• 负责人: YONEZAWA Shingo
• 金额: $ 2.91万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21740253/
• 关键词: 擬一次元超伝導; 磁場角度分解比熱測定; 超伝導ギャップ構造; TMTSF系; 有機物超伝導体; d波超伝導; 比熱の磁場方向依存性; 擬一次元超伝導体; ドップラーシフト; 高感度熱容量測定; 磁場角度分解比熱; (TMTSF)2ClO4; スピン1重項超伝導; 超伝導ギャップ; ラインノード; 超伝導揺らぎ

The molecular conductor (TMTSF)_2X has been actively studied for more than 30 years as an archetypal quasi-one-dimensional conductor, in which conductivity differs for all three principle directions. We succeeded in measuring the heat capacity of single-crystalline (TMTSF)_2ClO_4 with accurately controlling the field direction. From the obtained results, we revealed the superconducting gap structure and the thermodynamic phase diagram. These are fundamentally important information for understandings of superconductivity of the TMTSF family but have not been experimentally clarified for this 30 years.

分子导体（TMTSF）_2X是一种典型的准一维导体，其电导率在三个主要方向上都是不同的，已经被积极研究了30多年。在精确控制场方向的情况下，成功地测量了单晶（TMTSF）_2ClO_4的热容。根据所得结果，我们揭示了超导间隙结构和热力学相图。这些对于理解TMTSF家族的超导性是非常重要的信息，但近30年来一直没有得到实验的澄清。

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