SPECTROSCOPY OF THE POTENTIAL PROFILE IN A BALLISTIC QUANTUM CONSTRICTION

Article

关键词: NONLINEAR CONDUCTANCE;    POINT CONTACTS;   

DOI  :  10.1103/PhysRevB.50.4590

来源: SCIE

【 摘 要 】

We present a theory for the nonlinear current-voltage characteristics of a ballistic quantum constriction. Nonlinear features first develop because of above-barrier reflection from the potential profile, created by impurities in the vicinity of the constriction. The nonlinearity appears on a small voltage scale and makes it possible to determine distances between impurities as well as the magnitude of the impurity potentials.

【 授权许可】

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