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Suspended semiconductor nanostructures: physics and technology

Authors
  • Pogosov, A G1, 2
  • Shevyrin, A A1
  • Pokhabov, D A1, 2
  • Zhdanov, E Yu1, 2
  • Kumar, S3
  • 1 Rzhanov Institute of Semiconductor Physics SB RAS, Russia
  • 2 Novosibirsk State University, Russia
  • 3 University College London, United Kingdom , (United Kingdom)
Type
Published Article
Journal
Journal of Physics Condensed Matter
Publisher
IOP Publishing
Publication Date
Apr 25, 2022
Volume
34
Issue
26
Identifiers
DOI: 10.1088/1361-648X/ac6308
Source
ioppublishing
Keywords
Disciplines
  • Topical Review
License
Unknown

Abstract

The current state of research on quantum and ballistic electron transport in semiconductor nanostructures with a two-dimensional electron gas separated from the substrate and nanoelectromechanical systems is reviewed. These nanostructures fabricated using the surface nanomachining technique have certain unexpected features in comparison to their non-suspended counterparts, such as additional mechanical degrees of freedom, enhanced electron–electron interaction and weak heat sink. Moreover, their mechanical functionality can be used as an additional tool for studying the electron transport, complementary to the ordinary electrical measurements. The article includes a comprehensive review of spin-dependent electron transport and multichannel effects in suspended quantum point contacts, ballistic and adiabatic transport in suspended nanostructures, as well as investigations on nanoelectromechanical systems. We aim to provide an overview of the state-of-the-art in suspended semiconductor nanostructures and their applications in nanoelectronics, spintronics and emerging quantum technologies.

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