Giant Zero Bias Anomaly due to Coherent Scattering from Frozen Phonon Disorder in Quantum Point Contactsopen access
- Authors
- Lee, Y.-H.; Xiao, S.; Kim, K.W.; Reno, J.L.; Bird, J.P.; Han, J.E.
- Issue Date
- Jul-2019
- Publisher
- American Physical Society
- Citation
- Physical Review Letters, v.123, no.5
- Journal Title
- Physical Review Letters
- Volume
- 123
- Number
- 5
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/63729
- DOI
- 10.1103/PhysRevLett.123.056802
- ISSN
- 0031-9007
1079-7114
- Abstract
- We demonstrate an unusual manifestation of coherent scattering for electron waves in mesoscopic quantum point contacts, in which fast electron dynamics allows the phonon system to serve as a quasistatic source of disorder. The low-temperature conductance of these devices exhibits a giant (≫2e2/h) zero bias anomaly (ZBA), the features of which are reproduced in a nonequilibrium model for coherent scattering from the frozen phonon disorder. According to this model, the ZBA is understood to result from the in situ electrical manipulation of the phonon disorder, a mechanism that could open up a pathway to the on-demand control of coherent scattering in the solid state. © 2019 American Physical Society.
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Collections - College of Natural Sciences > Department of Physics > 1. Journal Articles
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