Aharonov-Bohm oscillations in carbon nanotubes
Article Abstract:
The wave-like nature of electrons passing through a cylindrical electrical conductor aligned in a magnetic field, manifests itself as a periodic oscillation, reflecting the dependence of the phase on the Aharonov-Bohm effect. Carbon nanotubes act as conducting molecular wires, and so are suitable for investigation quantum interference at single molecule level caused by Aharonov-Bohm effect. Individual multi-walled nanotobes were measured for magnetoresistance, and the oscillations as a function of magnetic flux agreed well with the theoretical predictions for the Aharonov-Bohm effect.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1999
User Contributions:
Comment about this article or add new information about this topic:
Jeffries Wyman (1901-95)
Article Abstract:
Biophysicist Jeffries Wyman, considered as a master in the field of haemoglobin research, died on Nov. 4, 1995 in Paris, France, at the age of 94. He began his career in research at Harvard and published his first haemoglobin paper in 1937. He resigned from Harvard in 1952 to become the first Science Attache of the American Embassy in Paris, but left the post three years later to become the Director of the UNESCO Science Cooperation Office for the Middle East until 1960.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1995
User Contributions:
Comment about this article or add new information about this topic:
David Bohm (1917-1992)
Article Abstract:
Physicist David Bohm died on October 27, 1992. In 1959 he and his student Yakir Aharanov discovered the Bohm-Aharanov effect, in which magnetic flux inside a solenoid effects the phase of electron waves passing outside the solenoid. Bohm is also famous for his causal interpretation of quantum mechanics which employed hidden variables and avoided the wave-particle duality. His holistic view of nature was unfairly scorned as mysticism by his critics.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1992
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Very long carbon nanotubes. Encapsulated C60 in carbon nanotubes. Formation of ordered ice nanotubes inside carbon nanotubes
- Abstracts: Not the earliest solar eclipse. Free oscillations illuminate the mantle. Darkness can illuminate
- Abstracts: Human frontiers in rough water. Rewriting the rules for a post-Cold War world. Japan's researchers merit further reforms
- Abstracts: Is it "oui or nous ne savons pas"? Europe's recalcitrant offshore island
- Abstracts: Promoter-induced enhancement of the crystallization rate of zeolites and related molecular sieves. Ordered mesoporous molecular sieves synthesized by a liquid-crystal template mechanism