Physical Properties of composite structures of d- and s-wave superconductors (d-dot's)

Masaru Kato, Masaki Hirayama, Masahiko Machida, Tomio Koyama, Takakazu Ishida

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

High-Tc superconducting dot embedded in an s-wave superconductor, which is called "d-dot", shows unusual properties. Especially, it shows spontaneous half-quantized magnetic fluxes at the corners of the dot because of the anisotropy of d-wave superconductivity. The d-dot can be considered as an artificial spin, because most stable states are doubly degenerate. We study stability of these degenerate states, using two-components Ginzburg-Landau equation. We show the energy difference between these degenerate states and excited states is comparable to the condensation energy of s-wave superconductor at T=0.

Original languageEnglish
Title of host publicationLOW TEMPERATURE PHYSICS
Subtitle of host publication24th International Conference on Low Temperature Physics - LT24
Pages781-782
Number of pages2
DOIs
Publication statusPublished - 2006 Dec 1
EventLOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 - Orlando, FL, United States
Duration: 2006 Aug 102006 Oct 17

Publication series

NameAIP Conference Proceedings
Volume850
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherLOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24
CountryUnited States
CityOrlando, FL
Period06/8/1006/10/17

Keywords

  • Ginzburg-Landau equation
  • Half-quantized vortex
  • High-temperature superconductors
  • Nano-superconductors

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • Cite this

    Kato, M., Hirayama, M., Machida, M., Koyama, T., & Ishida, T. (2006). Physical Properties of composite structures of d- and s-wave superconductors (d-dot's). In LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 (pp. 781-782). (AIP Conference Proceedings; Vol. 850). https://doi.org/10.1063/1.2354937