Effect of thermodynamic fluctuations on in-plane and out-of-plane magnetoresistance of monolayer superconductor Tl2Ba2CuO6+δ
Heon-Jung Kim, P. Chowdhury, S. K. Gupta, N. H. Dan, Sung-Ik Lee
DOI 10.1103/PhysRevB.70.144510 · Physical Review B
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Abstract
Measurements of the out-of-plane and in-plane magnetoresistances were carried out on monolayer nearly-optimally-doped Tl2Ba2CuO6+δ single crystals. Just above the critical transition temperature, Tc, the in-plane magnetoresistance was observed to be positive, while the out-of-plane magnetoresistance was negative. These anomalous magnetoresistances were analyzed based on the mean-field fluctuation theory, which includes Aslamazov-Lakin (AL), Maki-Thompson (MT), and the fluctuations of the quasiparticle density of state (FDOS) contributions. The FDOS contribution was found to be indispensable to explain the negative out-of-plane magnetoresistance in the mean field region.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Tl2Ba2CuO6+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 87 | Pressure not reported | unknown |
| Tl2Ba2CaCu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Bi2Sr2CuO6+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 9 | Pressure not reported | unknown |
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