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Science 15 June 2001:
Vol. 292. no. 5524, p. 1987
DOI: 10.1126/science.292.5524.1987
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News of the Week

CONDENSED-MATTER PHYSICS:
Switch-Hitter Materials Tantalize Theorists

David Voss

In the 4 June issue of Physical Review Letters, a team of physicists and materials scientists reports turning hydrides of the rare earth elements yttrium and lanthanum into shiny conductors by flashing them with ultraviolet (UV) light. The UV-triggered switchable mirrors are intriguing both in their basic physics and for possible applications to optoelectronics, say researchers.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)