Quantum behavior as well as room-temperature and 50 GHz operations of novel nonlinear devices and nanomaterials
Författare
Summary, in English
Novel nano-rectifiers based on ballistic electron transport have been fabricated from a high electron-mobility InGaAs/InP wafer. Because of the sufficiently small device size, operations at room temperature are achieved. Furthermore, the devices are shown to work not only up to at least 50 GHz but also with sensitivity to microwave reaching that of the commercial microwave diodes. Based on a similar microscopic mechanism, we have also constructed, to our knowledge, the first artificial electronic nanomaterial that operates at room temperature. Promising possibilities for practical applications, such as microwave detection and second-harmonic generation, are discussed. While the rectifying effect can be well described in the picture of classical ballistic transport, the pronounced output voltage reversal observed at low temperatures strongly suggests that quantum effect may become completely dominant
Avdelning/ar
Publiceringsår
2002
Språk
Engelska
Publikation/Tidskrift/Serie
7th International Conference on Nanometer-Scale Science and Technology and 21st European Conference on Surface Science
Dokumenttyp
Konferensbidrag
Förlag
Lund University
Ämne
- Condensed Matter Physics
Nyckelord
- InGaAs-InP
- 293 to 298 K
- 50 GHz
- second harmonic generation
- voltage reversal
- quantum effect
- microwave detection
- electronic nanomaterial
- microwave diodes
- device size
- electron mobility InGaAs/InP wafer
- ballistic electron transport
- nanorectifiers
- nanomaterials
- nonlinear devices
- quantum properties
- room temperature
Conference name
Proceedings of 7th International Conference on Nanometer-Scale Science and Technology and 21st European Conference on Surface Science (NANO-7/ECOSS-21)
Conference date
2002-06-24 - 2002-06-28
Conference place
Malmö, Sweden
Status
Published