Transient-thermoreflectance study of single-crystal lanthanum cuprate
G. L. Doll, G. L. Eesley, M. S. Dresselhaus, G. Dresselhaus, A. Cassanho, H. P. Jenssen, D. R. Gabbe
DOI 10.1103/PhysRevB.40.9354 · Physical Review B
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Abstract
We report the results of picosecond transient-thermoreflectance (TTR) studies of single-crystal La2CuO4 measured over the temperature range 80–300 K. Whereas a strong thermal signal is observed for light polarized parallel to the Cu-O planes (E⊥c^), very little thermal signal is obtained for the orthogonal polarization (E∥c^). Nonequilibrium heating, in which the local temperatures of the thermalized carriers exceeds the temperature of the lattice was found to occur on a picosecond time scale. The temperature dependence of the E⊥c^ TTR signal is not well understood, but may correlate with recent thermal-conductivity measurements on a similar sample.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| La2CuO4 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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