Image of local density of states fluctuations in disordered metals in the differential conductance of tunneling via a resonant impurity level

Falko, Vladimir (1997) Image of local density of states fluctuations in disordered metals in the differential conductance of tunneling via a resonant impurity level. Physical review B, 56 (3). pp. 1049-1052. ISSN 1098-0121

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Abstract

Differential conductance of the resonant-tunneling structure with a single impurity level studied in the current plateau regime undergoes fluctuations around a zero average manifesting the energy dependence of the local density of states in a disordered electrode. Although the rms value of dI/dV depends on disorder and barrier transparencies, it is almost independent of temperature and, as a function of bias voltage, has a correlation function scaled by the intrinsic width of the resonance, which can be regarded as a tool to measure this quantity beyond the main differential-conductance peak. The analysis is extended to the regime of classically high magnetic fields where both the amplitude and correlation magnetic field are expected to increase.

Item Type:
Journal Article
Journal or Publication Title:
Physical review B
Additional Information:
© 1997 The American Physical Society
Uncontrolled Keywords:
/dk/atira/pure/researchoutput/libraryofcongress/qc
Subjects:
ID Code:
57067
Deposited By:
Deposited On:
05 Sep 2012 16:33
Refereed?:
Yes
Published?:
Published
Last Modified:
23 Oct 2020 01:53