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Nature of Phase Transitions of Superconducting Wire Networks in a Magnetic Field | | X.S. Ling
; M.J. Higgins
; Chao Tang
; P.M. Chaikin
; S. Bhattacharya
; H.J. Lezec
; J.S. Tsai
; J. Fujita
; H. Numata
; Y. Nakamura
; Y. Ochiai
; | | Date: |
6 Dec 1995 | | Journal: | Phys. Rev. Lett. 76 (1996) 2989 | | Subject: | cond-mat | | Affiliation: | NEC Research Institute), H.J. Lezec, J.S. Tsai, J. Fujita, H. Numata, Y. Nakamura, and Y. Ochiai (NEC Fundamental Research Laboratories | | Abstract: | We study $I$-$V$ characteristics of periodic square Nb wire networks as a function of temperature in a transverse magnetic field, with a focus on three fillings 2/5, 1/2, and 0.618 that represent very different levels of incommensurability. For all three fillings, a scaling behavior of $I$-$V$ characteristics is found, suggesting a finite temperature continuous superconducting phase transition. The low-temperature $I$-$V$ characteristics are found to have an exponential form, indicative of the domain-wall excitations. | | Source: | arXiv, cond-mat/9512036 | | Services: | Forum | Review | PDF | Favorites | |
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