Domains in multiband superconductors

Tanaka, Y. ; Yanagisawa, T. ; Crisan, A. ; Shirage, P.M. ; Iyo, A. ; Tokiwa, K. ; Nishio, T. ; Sundaresan, A. ; Terada, N. (2011) Domains in multiband superconductors Physica C: Superconductivity, 471 (21-22). pp. 747-750. ISSN 0921-4534

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Multiband superconductors can have several types of domains that are inhibited in conventional single-band superconductors. These domains are phase domains and chiral domains and their domain wall are an interband phase difference soliton. In a superconductor with an odd number of electronic bands (five or more) and with positive interband Josephson interactions, we find other types of domains with different interband phase differences. We call these domains configuration domains because pseudo-order parameters for each band are dispersed in the complex plain and several configurations, which have several local minima. Fractional vortices serve as hubs for phase difference solitons (configuration domain walls). The divergence of the number of configurations with local minima would pose a serious problem for the stability of superconductivity.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
ID Code:120050
Deposited On:22 Jun 2021 05:31
Last Modified:22 Jun 2021 05:31

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