Anisotropic thermally activated flux-flow behavior in the layered superconductor 2M−WS2
Han Zhang, Yuqiang Fang, Teng Wang, Yixin Liu, Jianan Chu, Zhuojun Li, Da Jiang, Gang Mu, Zengfeng Di, Fuqiang Huang
DOI 10.1103/PhysRevB.103.L180503 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
2M−WS2 is a newly discovered superconductor with a rather high critical transition temperature (Tc=8.8K) and topological surface states. Recently Majorana bound states were observed in magnetic vortices of this material. Thus uncovering the flux dynamics of the magnetic vortices is essential to further promote the physical understanding and its practical application in topological quantum computation. Here we report an in-depth investigation on this issue by the temperature- and field-dependent electric transport measurements. The magnitudes of activation energy under both field orientations are rather low, revealing a weak pinning strength of the flux in the present system. Moreover, clear anisotropic thermally activated flux-flow behaviors are revealed. Under the in-plane field (H∥bc), the activation energy U shows a (1−T/Tc)H−α dependence indicating the three-dimensional feature, while under the out-of-plane field (H⊥bc), U is proportional to (1−T/Tc)lnH, which suggests a two-dimensional liquid state for the vortices.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| WS2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 8.8 | Pressure not reported | onset |
| YBa2Cu3O7-x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| RbCa2Fe4As4F2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Anisotropic multiband superconductivity in 2M−WS2 probed by controlled disorder
similarity 0.97Sunil Ghimire et al.
Source status unknown — claims are unverified
Cross correlation of thermal flux noise in layered superconductors
similarity 0.96V. D. Ashkenazy et al.
Source status unknown — claims are unverified
Fluctuations of vortices in layered high-Tc superconductors
similarity 0.96L. N. Bulaevskii et al.
Source status unknown — claims are unverified
Vortex dynamics and critical current in superconductors with unidirectional twin boundaries
similarity 0.96Hidehiro Asai & Satoshi Watanabe
Source status unknown — claims are unverified
Dynamic vortex phases and pinning in superconductors with twin boundaries
similarity 0.96C. Reichhardt et al.
Source status unknown — claims are unverified
Topological phase fluctuations, amplitude fluctuations, and criticality in extreme type-II superconductors
similarity 0.96A. K. Nguyen & A. Sudbø
Source status unknown — claims are unverified