Holder, J P and Savchenko, A K and Falko, Vladimir and Jouault, B and Faini, G and Laruelle, F and Bedel, E (2000) Enhanced fluctuations of the tunneling density of states near the bottom of a Landau band measured by a local spectrometer. Physical review letters, 84 (7). pp. 1563-1566. ISSN 0031-9007Full text not available from this repository.
We have found that the local density of state fluctuations (LDOSF) in a disordered metal, detected using an impurity in the barrier as a spectrometer, undergo enhanced (with respect to Shubnikov-de Haas and de Haas-van Alphen effects) oscillations in strong magnetic fields, omega(c)tau greater than or equal to 1. We attribute this to the dominant role of the states near the bottom of Landau bands which give the major contribution to the LDOSF and are most strongly affected by disorder. We also demonstrate that in intermediate fields the LDOSF increase with field B in accordance with the results obtained in the diffusion approximation.
|Journal or Publication Title:||Physical review letters|
|Subjects:||Q Science > QC Physics|
|Departments:||Faculty of Science and Technology|
Faculty of Science and Technology > Physics
|Deposited On:||03 Sep 2012 14:14|
|Last Modified:||10 Mar 2016 01:16|
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