Semiconductor heterostructure studies using emerging technologies

Yoshiro Hirayama, Tetsuomi Sogawa, Kyoichi Suzuki, Kiyoshi Kanisawa, Hiroshi Yamaguchi

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Low-temperature scanning tunnelling microscopy (LT-STM), surface acoustic wave (SAW), and mechanical cantilever are used to measure and manipulate quantum characteristics in semiconductor heterostructures. A nanoscale detection of local density of states is demonstrated for electrons confined in semiconductor quantum wells and dots by a combination of InAs-based heterostructures and LT-STM. The SAW is used to realize moving quantum wires and dots in semiconductor heterostructures. A synchronized optical measurement confirms two types of modulation, i.e. bandgap and potential modulations. A combination of mechanical cantilever and quantum heterostructures gives a new mechanical functionality and a novel tool to analyse quantum transport characteristics.

Original languageEnglish
Pages (from-to)2988-3001
Number of pages14
JournalPhysica Status Solidi (B): Basic Research
Issue number8
Publication statusPublished - 2007 Aug


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