期刊
PHYSICAL REVIEW LETTERS
卷 85, 期 17, 页码 3664-3667出版社
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevLett.85.3664
关键词
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A near-surface structural phase transition on a SrTiO3 single crystal, occurring at T* about 45 K above the bulk cubic-to-tetragonal transition, is observed by means of optical second harmonic generation. The temperature dependence of the second harmonic field in the vicinity of T* is described with a phenomenological Landau-type model.
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