Theory of force on quantum vortices in superconductors
| Project/Area Number |
15K05160
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Condensed matter physics II
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| Research Institution | The University of Tokyo |
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Principal Investigator |
KATO Yusuke 東京大学, 大学院総合文化研究科, 教授 (20261547)
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| Research Collaborator |
Kurosawa Noriyuki
Masaki Yusuke
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 超伝導 / 量子渦 / フラックフロー / 磁束量子 / マグナス力 / ローレンツ力 / フラックスフロー / 時間に依存するギンツブルグランダウ方程式 / 拡張準古典理論 / 帯電効果 / カイラルP波超伝導体 / 部分波展開 / ギンツブルグランダウ方程式 / London 方程式 / マヨラナ粒子 / カロリドジャンマトリコン状態 / アンドレーエフ束縛状態 |
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| Outline of Final Research Achievements |
Dynamics of superconductors in magnetic fields are governed by their "weak points", i.e. properties of topological defects. A topological defect in superconductors is quantized magnetic flux, which is also called quantum vortex because the quantized magnetic flux is the center of superconducting circular currents. The problem is "what is the force on quantum vortex in superconductors?". In classical fluids, vortex is subject to Magnus force while magnetic flux is often claimed to feel the Lorentz force due the external current. In this project, we find that the constitutive force of Magnus and Lorentz forces is the only physically meaningful force. Our results are based on the time-dependent-Ginzburg-Landau theory.
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Report
(4 results)
Research Products
(47 results)
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[Presentation] 超伝導渦にかかる力II2015
Author(s)
加藤雄介，Chung Chun-Kit
Organizer
第23回渦糸国内会議
Place of Presentation
休暇村志賀島(福岡県、志賀島)
Year and Date
2015-12-08
Related Report
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