Zero-bias anomaly and role of electronic correlations in a disordered metal filmopen access
- Authors
- Jeon, Sangjun; Kim, Sungmin; Kuk, Young
- Issue Date
- Aug-2020
- Publisher
- IOP PUBLISHING LTD
- Keywords
- zero bias anomaly; dynamic Coulomb blockade; disorder; localization; electron correlation
- Citation
- NEW JOURNAL OF PHYSICS, v.22, no.8
- Journal Title
- NEW JOURNAL OF PHYSICS
- Volume
- 22
- Number
- 8
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/53419
- DOI
- 10.1088/1367-2630/aba3e7
- ISSN
- 1367-2630
- Abstract
- Localization and electron correlation play significant roles in understanding the electronic states of low-dimensional systems. We carried out the tunneling spectroscopy measurements on a crystalline nano-sized island and a disordered two-dimensional metal film. The low temperature zero-bias anomalywas studied using P (E) theory and statistical analysis of the spatial distribution of the local density of states in both the systems. The effective capacitance and resistance of the tunnel junction extracted from P (E) theory gives the energy and temperature dependency of the measured ZBA. Statistical analysis reveals the electron correlation effect and the electron correlation length. By combining P (E) theory and the statistical analysis, we found that the microscopic origin of ZBA formation in the disordered two-dimensional film is strongly related to the electron localization and the correlations.
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Collections - College of Natural Sciences > Department of Physics > 1. Journal Articles
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