Special Issue "Layered Superconductors II"

A special issue of Condensed Matter (ISSN 2410-3896).

Deadline for manuscript submissions: closed (31 March 2020).

Special Issue Editor

Dr. Yoshikazu Mizuguchi
Website
Guest Editor
Department of Electrical and Electronic Engineering, Tokyo Metropolitan University, Hachioji, Tokyo, Japan
Interests: superconductivity; thermoelectric material; new material; low-dimensional material; superconducting wire; crystal structure analysis
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Special Issue Information

Dear Colleagues,

Layered superconductors have attracted a great deal of attention due to the emergence of high-Tc and unconventional superconductivity. Thus, the discovery of new layered superconductors and understanding of superconductivity mechanisms are very important for exploring new high-Tc superconductors. In addition, layered superconductors have been studied as a candidate material for a topological superconductor. In this special issue, we focus on the exploration of novel layered superconductors, such as Cu-based, Fe-based, Bi-based, Ti-based, and other novel layered superconductors. In addition, superconducting properties of high quality bulk and thin film samples will be explored in this Special Issue.

Dr. Yoshikazu Mizuguchi
Guest Editor

Manuscript Submission Information

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Keywords

  • layered superconductor
  • Fe-based superconductor
  • Bi-based superconductor
  • Ti-based superconductor
  • thin film

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Published Papers (2 papers)

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Research

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Open AccessArticle
Instabilities of the Vortex Lattice and the Peak Effect in Single Crystal YBa2Cu4O8
Condens. Matter 2019, 4(3), 74; https://doi.org/10.3390/condmat4030074 - 02 Aug 2019
Cited by 1
Abstract
We report on the measurements of the remnant magnetization, and hence critical current, in a single crystal of YBa2Cu4O8. A peak in the temperature dependence of the critical current is observed when the external magnetic field is [...] Read more.
We report on the measurements of the remnant magnetization, and hence critical current, in a single crystal of YBa2Cu4O8. A peak in the temperature dependence of the critical current is observed when the external magnetic field is tilted away from the a–b planes. The observed behavior is attributed to a thermally activated instability-driven vortex-lattice splitting or vortex chain formation. The nature of the peak and the possibility of a thermally-activated dimensional crossover have been discussed. Full article
(This article belongs to the Special Issue Layered Superconductors II)
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Review

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Open AccessReview
Superconductivity in La2O2M4S6 -Type Bi-based Compounds: A Review on Element Substitution Effects
Condens. Matter 2020, 5(2), 27; https://doi.org/10.3390/condmat5020027 - 06 Apr 2020
Abstract
Since 2012, layered compounds containing Bi-Ch (Ch: S and Se) layers have been extensively studied in the field of superconductivity. The most-studied system is BiS2-based superconductors with two-layer-type conducting layers. Recently, superconductivity was observed in La2O [...] Read more.
Since 2012, layered compounds containing Bi-Ch (Ch: S and Se) layers have been extensively studied in the field of superconductivity. The most-studied system is BiS2-based superconductors with two-layer-type conducting layers. Recently, superconductivity was observed in La2O2M2S6 (M = metals), which contains four-layer-type conducting layers. The four-layer-type Bi-based superconductors are new systems in the family of Bi-based superconductors; we can expect further development of Bi-based layered superconductors. In this review article, we summarize the progress of synthesis, structural analysis, investigations on superconducting properties, and material design of the four-layer-type Bi-based superconductors. In-plane chemical pressure is the factor essential for the emergence of bulk superconductivity in the system. The highest Tc of 4.1 K was observed in Rare Earth elements (RE) substituted La2-xRExO2Bi3Ag0.6Sn0.4S6. Full article
(This article belongs to the Special Issue Layered Superconductors II)
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