Anomalous laser-induced voltages in YBa2Cu3Ox and ‘‘off-diagonal’’ thermoelectricity

2 May 1994

journal article
research article
Published by AIP Publishing in Applied Physics Letters

Vol. 64 (18) , 2347-2349
https://doi.org/10.1063/1.111610

Abstract

Large anomalous laser‐induced voltages observed in YBa₂Cu₃O_x are explained as the result of ‘‘off diagonal’’ thermoelectricity, an uncommon phenomenon which may only occur in low symmetry environments. The effect is accompanied by a large electrical impedance transformation and the coupling of electrical and thermal currents in orthogonal directions. It thus offers new thin film applications for power generation, cooling, heat pumping, heat flow measurement, and the fast self‐powered sensing of optical and other radiation energy absorbed in thin layers.

Keywords

This publication has 6 references indexed in Scilit:

Anomalous photovoltaic response in ${YBa}_{2}$ ${Cu}_{3}$ $O_{7}$
Physical Review B, 1992
Giant voltages upon surface heating in normal YBa2Cu3O7−δ films suggesting an atomic layer thermopile
Applied Physics Letters, 1992
Nonbolometric laser-induced voltage signals in ${YBa}_{2}$ ${Cu}_{3}$ $O_{7 - δ}$ thin films at room temperature
Physical Review B, 1991
Origin of the anomalous photovoltaic signal in Y-Ba-Cu-O
Physical Review B, 1991
Symmetry-forbidden laser-induced voltages in ${YBa}_{2}$ ${Cu}_{3}$ $O_{7}$
Physical Review B, 1990
Anisotropic thermoelectric power and conductivity in single-crystal $Y {Ba}_{2} {Cu}_{3} O_{y}$
Physical Review B, 1988