Related resources
Full-text held externally
Search for item elsewhere
University researcher(s)
Academic department(s)
Breakdown of Universal Scaling of Conductance Fluctuations in High Magnetic-Fields
Geim, A K; Main, P C; Beton, P H; Eaves, L; Beaumont, S P; Wilkinson, C D W
Physical Review Letters. 1992;69(8):1248-1251.
Access to files
Full-text and supplementary files are not available from Manchester eScholar. Full-text is available externally using the following links:
Full-text held externally
Abstract
We have studied universal conductance fluctuations in the nonlocal magnetoresistance of n+-GaAs wires. The Lee-Stone correlation field DELTA-B(c) increases by a factor of 5 as the magnetic field increases from 0 to 12 T but the amplitude of the fluctuations does not change. It is possible to explain the increase of DELTA-B(c) quantitatively in terms of a variation of the size of the phase coherence length. However, this should also give rise to a large change in the fluctuation amplitude, which is not observed. This implies that the universal scaling of the conductance fluctuations is not valid in high magnetic fields.
Keyword(s)
extrinsic conductivity; heterostructures; magnetoresistance; wires
Bibliographic metadata
- Related website <Go to ISI>://A1992JK42600027
- Jk426 Times Cited:41 Cited References Count:22