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Planckian Dissipation and non-Ginzburg-Landau Type Upper Critical Field in Bi2201
- Source :
- Sci. China-Phys. Mech. Astron. 66, 237412 (2023)
- Publication Year :
- 2022
-
Abstract
- Resistivity and Hall effect measurements have been carried out on a micro-fabricated bridge of Bi2201 single crystal at low temperatures down to 0.4 K under high magnetic fields. When superconductivity is crashed by a high magnetic field, the recovered "normal state" resistivity still shows a linear temperature dependence in low temperature region. Combining with the effective mass and the charge carrier density, we get a linear scattering rate $1/\tau = \alpha k_{B} T/\hbar$ with $0.77<\alpha<1.16$, which gives a strong evidence of the Planckian dissipation. Furthermore, our results reveal a new type of temperature dependence of upper critical field, $H_{c2}(T)=H^*\sqrt{(1-t)/(t+0.154)}$, which is totally different from the expectation of the Ginzburg-Landau theory, and suggests uncondensed Cooper pairs above $H_{c2}(T)$ line.<br />Comment: 8 pages, 4 figures
- Subjects :
- Condensed Matter - Superconductivity
Subjects
Details
- Database :
- arXiv
- Journal :
- Sci. China-Phys. Mech. Astron. 66, 237412 (2023)
- Publication Type :
- Report
- Accession number :
- edsarx.2203.06879
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1007/s11433-022-2017-6