Continuous order-disorder phase transition (2×2)→(1×1) on the (0001)AlN surface

V. G. Mansurov, Yu G. Galitsyn, A. Yu Nikitin, E. A. Kolosovsky, K. S. Zhuravlev, Z. Osváth, L. Dobos, Z. Horváth, B. Pécz

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Abstract

Smooth (0001)AlN surface on a (0001) sapphire substrate was prepared by ammonia Molecular Beam Epitaxy. A continuous (2×2)→(1×1) reconstruction phase transition on the (0001)AlN surface under ammonia flux was experimentally investigated by RHEED. The intensity of a fractional (01/2) streak was studied as a function of the sample temperature under different ammonia fluxes. The temperature of the transition increases with increasing of the ammonia flux (an effective activation energy is about 1.3 eV). The phase transition is described in the frame of the Bethe-Peierls approximation.

Original languageEnglish
Pages (from-to)2498-2501
Number of pages4
JournalPhysica Status Solidi (C) Current Topics in Solid State Physics
Volume4
Issue number7
DOIs
Publication statusPublished - 2007

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ammonia
disorders
sapphire
molecular beam epitaxy
activation energy
temperature
approximation

ASJC Scopus subject areas

  • Condensed Matter Physics

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Continuous order-disorder phase transition (2×2)→(1×1) on the (0001)AlN surface. / Mansurov, V. G.; Galitsyn, Yu G.; Nikitin, A. Yu; Kolosovsky, E. A.; Zhuravlev, K. S.; Osváth, Z.; Dobos, L.; Horváth, Z.; Pécz, B.

In: Physica Status Solidi (C) Current Topics in Solid State Physics, Vol. 4, No. 7, 2007, p. 2498-2501.

Research output: Contribution to journalArticle

Mansurov, V. G. ; Galitsyn, Yu G. ; Nikitin, A. Yu ; Kolosovsky, E. A. ; Zhuravlev, K. S. ; Osváth, Z. ; Dobos, L. ; Horváth, Z. ; Pécz, B. / Continuous order-disorder phase transition (2×2)→(1×1) on the (0001)AlN surface. In: Physica Status Solidi (C) Current Topics in Solid State Physics. 2007 ; Vol. 4, No. 7. pp. 2498-2501.
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AU - Zhuravlev, K. S.

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