Publication
Physical Review Letters
Paper

Optical absorption edge of SrTiO3 around the 105-K phase transition

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Abstract

The wavelength-modulated absorption and reflection spectra of SrTiO3 have been measured as functions of temperature. Over a 60-K temperature range around the structural phase transition the band gaps of both high- and low-temperature phases are observed simultaneously. This effect and an associated band-gap shift are attributed to the fluctuations at the second-order phase transition. © 1971 The American Physical Society.

Date

19 Jul 1971

Publication

Physical Review Letters

Authors

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