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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국진공학회(ASCT) Journal of Korean Vacuum Science & Technology Journal of Korean Vacuum Science & Technology Vol.1 No.1
- 발행연도
- 1997.6
- 수록면
- 19 - 23 (5page)
이용수
초록· 키워드
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The conductance of a microscopic constriction in a two-dimensional electron gas is obtained as a function of both the constriction width and curvature. When the quantized conductance G at plateaus is given by the channel number N_c times the quantum unit 2e²/h, N_c is found to be a function of not only the width and but also the curvature. At a given W, N_c increases by one whenever the constriction curvature decreases by about a certain value. Until the shape smoothness becomes comparable to the two parallel boundaries, there exist more channels available for conduction in a smaller-curvature constriction than in a larger-curvature one. This result is very interesting because N_c has been considered to depend on the width W only. This reflects that the number of the quantized transverse levels depend on both the constriction width and curvature in a two-dimensional electron gas.
목차
Abstract
Ⅰ. Introduction
Ⅱ. Hyperbolic Model
Ⅲ. Calculations and results
Acknowledgment
References
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