Low-temperature Hall effect in electron-doped superconducting La2−xCexCuO4 thin films
K. Jin, B. Y. Zhu, B. X. Wu, L. J. Gao, B. R. Zhao
DOI 10.1103/PhysRevB.78.174521 · Physical Review B
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Abstract
We investigate the low-temperature Hall effect in electron-doped La2−xCexCuO4 thin films from heavily underdoped x=0.06 to heavily overdoped x=0.17. With increasing x, the charge carriers that dominate the Hall effect gradually change from electronlike to holelike. From the Hall coefficient and differential Hall coefficient, we infer that a large holelike Fermi surface forms above x=0.15, that is, the electronlike pocket may exist until x=0.15. Meanwhile, the sign of the Hall resistivity changes from negative (x=0.105) to positive (x=0.12) at 2 K, indicating that single electron pocket exists below x=0.105 at low temperature.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| La2-xCexCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 28 | Pressure not reported | onset |
| La2-xCexCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 26.5 | Pressure not reported | zero_resistance |
| YBa2Cu3O6.5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| YBa2Cu3O6.6 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Pr2-xCexCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Nd2-xCexCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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