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

Gopi Nath Daptary; Hemanta Kumar Kundu; John Jesudasan; Pramod Kumar; Anjana Dogra; Pratap Raychaudhuri; R. C. Budhani; Aveek Bid

doi:10.1109/icnf.2015.7288555

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

Gopi Nath Daptary
, Hemanta Kumar Kundu
, John Jesudasan
, Pramod Kumar
, Anjana Dogra
, Pratap Raychaudhuri
, R. C. Budhani
, Aveek Bid

Indian Institute of Science Bangalore
Tata Institute of Fundamental Research
CSIR - National Physical Laboratory

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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.

Original language	English
Title of host publication	2015 International Conference on Noise and Fluctuations, ICNF 2015
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781467383356
DOIs	https://doi.org/10.1109/icnf.2015.7288555
State	Published - 2 Oct 2015
Externally published	Yes
Event	International Conference on Noise and Fluctuations, ICNF 2015 - Xian, China Duration: 2 Jun 2015 → 6 Jun 2015

Publication series

Name	2015 International Conference on Noise and Fluctuations, ICNF 2015

Conference

Conference	International Conference on Noise and Fluctuations, ICNF 2015
Country/Territory	China
City	Xian
Period	2/06/15 → 6/06/15

Bibliographical note

Publisher Copyright:
© 2015 IEEE.

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10.1109/icnf.2015.7288555

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Daptary, G. N., Kundu, H. K., Jesudasan, J., Kumar, P., Dogra, A., Raychaudhuri, P., Budhani, R. C., & Bid, A. (2015). Resistance fluctuations near the Berezinskii-Kosterlitz-Thouless transition temperature in low dimensional superconductors. In 2015 International Conference on Noise and Fluctuations, ICNF 2015 Article 7288555 (2015 International Conference on Noise and Fluctuations, ICNF 2015). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/icnf.2015.7288555

Daptary, Gopi Nath ; Kundu, Hemanta Kumar ; Jesudasan, John et al. / Resistance fluctuations near the Berezinskii-Kosterlitz-Thouless transition temperature in low dimensional superconductors. 2015 International Conference on Noise and Fluctuations, ICNF 2015. Institute of Electrical and Electronics Engineers Inc., 2015. (2015 International Conference on Noise and Fluctuations, ICNF 2015).

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title = "Resistance fluctuations near the Berezinskii-Kosterlitz-Thouless transition temperature in low dimensional superconductors",

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.",

author = "Daptary, \{Gopi Nath\} and Kundu, \{Hemanta Kumar\} and John Jesudasan and Pramod Kumar and Anjana Dogra and Pratap Raychaudhuri and Budhani, \{R. C.\} and Aveek Bid",

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doi = "10.1109/icnf.2015.7288555",

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Daptary, GN, Kundu, HK, Jesudasan, J, Kumar, P, Dogra, A, Raychaudhuri, P, Budhani, RC & Bid, A 2015, Resistance fluctuations near the Berezinskii-Kosterlitz-Thouless transition temperature in low dimensional superconductors. in 2015 International Conference on Noise and Fluctuations, ICNF 2015., 7288555, 2015 International Conference on Noise and Fluctuations, ICNF 2015, Institute of Electrical and Electronics Engineers Inc., International Conference on Noise and Fluctuations, ICNF 2015, Xian, China, 2/06/15. https://doi.org/10.1109/icnf.2015.7288555

Resistance fluctuations near the Berezinskii-Kosterlitz-Thouless transition temperature in low dimensional superconductors. / Daptary, Gopi Nath; Kundu, Hemanta Kumar; Jesudasan, John et al.
2015 International Conference on Noise and Fluctuations, ICNF 2015. Institute of Electrical and Electronics Engineers Inc., 2015. 7288555 (2015 International Conference on Noise and Fluctuations, ICNF 2015).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Daptary, Gopi Nath

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AU - Dogra, Anjana

AU - Raychaudhuri, Pratap

AU - Budhani, R. C.

AU - Bid, Aveek

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N2 - 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.

AB - 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.

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Daptary GN, Kundu HK, Jesudasan J, Kumar P, Dogra A, Raychaudhuri P et al. Resistance fluctuations near the Berezinskii-Kosterlitz-Thouless transition temperature in low dimensional superconductors. In 2015 International Conference on Noise and Fluctuations, ICNF 2015. Institute of Electrical and Electronics Engineers Inc. 2015. 7288555. (2015 International Conference on Noise and Fluctuations, ICNF 2015). doi: 10.1109/icnf.2015.7288555

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

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