Polarity Inversion in Polar-Nonpolar-Polar Heterostructures

Sunglae Cho, Suk J. Youn, Yunki Kim, Antonio DiVenere, George K.L. Wong, Arthur J Freeman, J. B. Ketterson

Research output: Contribution to journalArticle

Abstract

We have observed an epilayer-thickness-dependent polarity inversion for the growth of CdTe on Sb(Bi)/CdTe(111)B. For films with Sb(Bi) thicknesses of less than 40Å (15Å), the CdTe layer shows a B (Te-terminated) face, but it switches to an A (Cd-terminated) face for thicker layers. On the other hand, a CdTe layer grown on Bi(Sb)/CdTe(111)A always shows the A face regardless of Sb or Bi layer thicknesses. In order to address the observations we have performed ab initio calculations, which suggest that the polarity of a polar material on a nonpolar one results from the binding energy difference between the two possible surface configurations.

Original languageEnglish
Pages (from-to)126403-126403-4
JournalPhysical Review Letters
Volume87
Issue number12
DOIs
Publication statusPublished - Sep 17 2001

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polarity
inversions
switches
binding energy
configurations

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Cho, S., Youn, S. J., Kim, Y., DiVenere, A., Wong, G. K. L., Freeman, A. J., & Ketterson, J. B. (2001). Polarity Inversion in Polar-Nonpolar-Polar Heterostructures. Physical Review Letters, 87(12), 126403-126403-4. https://doi.org/10.1103/PhysRevLett.87.126403

Polarity Inversion in Polar-Nonpolar-Polar Heterostructures. / Cho, Sunglae; Youn, Suk J.; Kim, Yunki; DiVenere, Antonio; Wong, George K.L.; Freeman, Arthur J; Ketterson, J. B.

In: Physical Review Letters, Vol. 87, No. 12, 17.09.2001, p. 126403-126403-4.

Research output: Contribution to journalArticle

Cho, S, Youn, SJ, Kim, Y, DiVenere, A, Wong, GKL, Freeman, AJ & Ketterson, JB 2001, 'Polarity Inversion in Polar-Nonpolar-Polar Heterostructures', Physical Review Letters, vol. 87, no. 12, pp. 126403-126403-4. https://doi.org/10.1103/PhysRevLett.87.126403
Cho, Sunglae ; Youn, Suk J. ; Kim, Yunki ; DiVenere, Antonio ; Wong, George K.L. ; Freeman, Arthur J ; Ketterson, J. B. / Polarity Inversion in Polar-Nonpolar-Polar Heterostructures. In: Physical Review Letters. 2001 ; Vol. 87, No. 12. pp. 126403-126403-4.
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