Correlated non-Gaussian phase fluctuations in LaAlO3/SrTiO3 heterointerfaces
IR@NPL: CSIR-National Physical Laboratory, New Delhi
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| Title |
Correlated non-Gaussian phase fluctuations in LaAlO3/SrTiO3 heterointerfaces
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| Creator |
Daptary, Gopi Nath
Kumar, Shelender Kumar, Pramod Dogra, Anjana Mohanta, N. Taraphder, A. Bid, Aveek |
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| Subject |
Applied Physics/Condensed Matter
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| Description |
We probe the existence of large correlated non-Gaussian phase fluctuations in the vicinity of the superconducting phase transition in the conducting layer residing at the interface of LaAlO3/SrTiO3 heterostructures. The non-Gaussian fluctuations appear between the Berezinskii-Kosterlitz-Thouless transition temperature T-BKT and the mean-field transition temperature T-C. Subsequent theoretical analysis reveals that non-Gaussianity arises predominantly due to the percolative transition of a Josephson coupled network of superconductors. Our results confirm that the superconductivity in this system is confined to two dimensions. Our study of the non-Gaussian resistance fluctuation spectrum provides a novel means to explore the BKT transition in two-dimensional inhomogeneous superconductors.
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| Publisher |
American Physical Society
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| Date |
2016-08-16
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://npl.csircentral.net/2168/1/Correlated%20non.pdf
Daptary, Gopi Nath and Kumar, Shelender and Kumar, Pramod and Dogra, Anjana and Mohanta, N. and Taraphder, A. and Bid, Aveek (2016) Correlated non-Gaussian phase fluctuations in LaAlO3/SrTiO3 heterointerfaces. Physical Review B , 94 (8). 085104-1-085104-9. ISSN 2469-9950 |
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| Relation |
http://npl.csircentral.net/2168/
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