Shot Noise Suppression in a Quantum Point Contact with Short Channel Length
- Title
- Shot Noise Suppression in a Quantum Point Contact with Short Channel Length
- Author
- 정희준
- Keywords
- DIMENSIONAL ELECTRON-GAS; QUANTIZED CONDUCTANCE; SPIN POLARIZATION; HETEROSTRUCTURE; LOCALIZATION; TEMPERATURE; DEPENDENCE; TRANSPORT; DEVICES; BIAS
- Issue Date
- 2015-07
- Publisher
- IOP PUBLISHING LTD
- Citation
- CHINESE PHYSICS LETTERS, v. 32, No. 7
- Abstract
- An experimental study on the current shot noise of a quantum point contact with short channel length is reported. The experimentally measured maximum energy level spacing between the ground and the first excited state of the device reached up to 7.5 meV, probably due to the hard wall confinement by using shallow electron gas and sharp point contact geometry. The two-dimensional non-equilibrium shot noise contour map shows noise suppression characteristics in a wide range of bias voltage. Fano factor analysis indicates spin-polarized transport through a short quantum point contact.
- URI
- http://iopscience.iop.org/article/10.1088/0256-307X/32/7/077301/metahttp://hdl.handle.net/20.500.11754/36378
- ISSN
- 1741-3540; 0256-307X
- DOI
- 10.1088/0256-307X/32/7/077301
- Appears in Collections:
- COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E](과학기술융합대학) > APPLIED PHYSICS(응용물리학과) > Articles
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