Rights statement: © 1997 The American Physical Society
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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Image of local density of states fluctuations in disordered metals in the differential conductance of tunneling via a resonant impurity level
AU - Falko, Vladimir
N1 - © 1997 The American Physical Society
PY - 1997/7/15
Y1 - 1997/7/15
N2 - 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.
AB - 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.
U2 - 10.1103/PhysRevB.56.1049
DO - 10.1103/PhysRevB.56.1049
M3 - Journal article
VL - 56
SP - 1049
EP - 1052
JO - Physical review B
JF - Physical review B
SN - 1098-0121
IS - 3
ER -