Local Density of States in Zero-Dimensional Semiconductor Structures

K. Kanisawa, M. J. Butcher, Y. Tokura, H. Yamaguchi, Y. Hirayama

研究成果: Article

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The local density of states (LDOS) within tetrahedral InAs structures, formed at the surface of InAs/GaAs(111)A, has been characterized using low-temperature scanning tunneling microscopy. The LDOS of the lowest four zero-dimensional (0D) discrete levels have been imaged in structures with a comparable size to the electron wavelength. The LDOS inside the structures is observed to be higher than that of the surrounding area at intervals of the level separation. This feature indicates the singularity of the LDOS close to the 0D resonant levels.

元の言語English
ジャーナルPhysical Review Letters
87
発行部数19
DOI
出版物ステータスPublished - 2001 10 22
外部発表Yes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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