Resistance fluctuations near the Berezinskii-Kosterlitz-Thouless transition temperature in low dimensional superconductors

Daptary, Gopi Nath and Kundu, Hemanta Kumar and Jesudasan, John and Kumar, Pramod and Dogra, Anjana and Raychaudhuri, Pratap and Budhani, RC and Bid, Aveek (2015) Resistance fluctuations near the Berezinskii-Kosterlitz-Thouless transition temperature in low dimensional superconductors. In: International Conference on Noise and Fluctuations, JUN 02-06, 2015, Xian, PEOPLES R CHINA.

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Abstract

We have studied resistance fluctuations in two different types of two-dimensional superconductors near to the Bcrczinskii-Kostcrlitz-Thoulcss (BKT) transition. The power spectral density of the resistance fluctuations was seen to deviate from 1/f as transition temperature is approached. We find that the shape of the spectrum can not be explained by a model for local defect fluctuations. Probability distribution function(PDF) and voltage-voltage auto-correlation functions provides evidence of the non-Gaussian nature of the resistance fluctuations near the BKT transition.

Item Type:	Conference Proceedings
Additional Information:	Copy right for this article belongs to the IEEE, 345 E 47TH ST, NEW YORK, NY 10017 USA
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	28 Oct 2016 07:05
Last Modified:	28 Oct 2016 07:05
URI:	http://eprints.iisc.ac.in/id/eprint/55132

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