Phys. Rev. Lett. 85, 3664–3667 (2000)

Observation of a Near-Surface Structural Phase Transition in SrTiO₃ by Optical Second Harmonic Generation

Abstract

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E. D. Mishina¹, T. V. Misuryaev¹, N. E. Sherstyuk¹, V. V. Lemanov², A. I. Morozov¹, A. S. Sigov¹, and Th. Rasing³
¹Moscow Institute of Radioengineering, Electronics and Automation, Moscow 117454, Russia
²A.F. Ioffe Physical Technical Institute, 194021 St. Petersburg, Russia
³Research Institute for Materials, University of Nijmegen, Toernooiveld 1, NL-6525 ED Nijmegen, The Netherlands

Received 6 May 1999; revised 14 January 2000; published in the issue dated 23 October 2000

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.

URL:

http://link.aps.org/doi/10.1103/PhysRevLett.85.3664

DOI:

10.1103/PhysRevLett.85.3664

PACS:

68.35.Rh, 42.65.Ky, 77.80.Bh

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Phys. Rev. Lett. 85, 3664–3667 (2000)

Observation of a Near-Surface Structural Phase Transition in SrTiO3 by Optical Second Harmonic Generation

Observation of a Near-Surface Structural Phase Transition in SrTiO₃ by Optical Second Harmonic Generation