Bilayer oscillation of subband effective masses in Pb/Ge(111) thin-film quantum wells

S. J. Tang, Chang Yeh Lee, Chien Chung Huang, Tay Rong Chang, Cheng Maw Cheng, Ku Ding Tsuei, H. T. Jeng

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Subband dispersions of quantum-well states in Pb thin films on Ge(111) have been measured with angle-resolved photoemission spectroscopy. The effective masses at the surface zone center exhibit a bilayer oscillation with thickness, in both magnitude and sign. This behavior is attributed to a strong interaction between Pb quantum-well subbands and the Ge valence maximum near the Fermi level, which occurs about every two monolayers.

Original languageEnglish
Article number103106
JournalApplied Physics Letters
Volume96
Issue number10
DOIs
Publication statusPublished - 2010

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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