Jamming-glass transitions in a frustrated Josephson junction array
| Project/Area Number |
21540386
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Mathematical physics/Fundamental condensed matter physics
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| Research Institution | Osaka University |
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Principal Investigator |
YOSHINO Hajime 大阪大学, 大学院理学研究科, 助教 (50335337)
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| Co-Investigator(Kenkyū-buntansha) |
NOGAWA Tomoaki 東京大学, 大学院・工学系研究科, 特任研究員 (00399982)
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2010: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2009: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | ジョセフソン接合配列 / フラストレーション / ガラス転移 / ジャミング転移 |
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| Research Abstract |
Josephson junction arrays are artificial networks of superconducting islands in which the phases of the superconducting order parameter on the islands interact with each other via the Josephson couplings. Under external magnetic fields, such a system becomes strongly frustrated much as a fictitious crystal put in a curved space. We studied the current-voltage property and static properties of a frustrated Josephson junction array on a square lattice by a combination of analytical and numerical approaches. We found that the system exhibits a jamming transition under variation of the anisotropy of the Josephson coupling into the vertical and horizontal directions and identified the mechanism of the transition.
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Report
(4 results)
Research Products
(36 results)
