Premium
Persistent photoinduced effects in high‐ T e superconductors
Author(s) -
Hoffmann Axel,
Reznik Dmitry,
Schuller Ivan K.
Publication year - 1997
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.19970090321
Subject(s) - superconductivity , materials science , cuprate , high temperature superconductivity , photoconductivity , condensed matter physics , thin film , optoelectronics , nanotechnology , physics
The reaction of high‐temperature cuprate superconductors to illumination differs from the reaction produced in conventional superconductors. Two such effects, reviewed here, are persistent photoconductivity and persistent photoinduced superconductivity. For example, REBa 2 Cu 3 O x thin films show a decrease in the normal state resistance and an increase of T c which persist for a long time at low temperatures (< 100 K). The experimental investigations and results are briefly presented, before two alternative theoretical models are considered.