Optical Absorption Edge of SrTiAround the 105-K Phase Transition
- 19 July 1971
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 27 (3) , 146-148
- https://doi.org/10.1103/physrevlett.27.146
Abstract
The wavelength-modulated absorption and reflection spectra of SrTi 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.
Keywords
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