ＱＵＡＮＴＩＺＥＤ ＣＯＮＤＵＣＴＡＮＣＥ ＩＮ ＴＨＥ ＭＥＳＯＳＣＯＰＩＣＳ-ＳＩＺＥＤ ＭＥＴＡＬＬＩＣ ＰＯＩＮＴ ＣＯＮＴＡＣＴＳ | Zendy

Zhenhong Dai | Zendy; Jinzuo Sun | Zendy; YU Ya-Bin | Zendy

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ＱＵＡＮＴＩＺＥＤＣＯＮＤＵＣＴＡＮＣＥＩＮＴＨＥＭＥＳＯＳＣＯＰＩＣＳ-ＳＩＺＥＤＭＥＴＡＬＬＩＣＰＯＩＮＴＣＯＮＴＡＣＴＳ

Author(s) -

Zhenhong Dai,

Jinzuo Sun,

YU Ya-Bin

Publication year - 1997

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.46.1406

Subject(s) - conductance , quantization (signal processing) , quantum tunnelling , scanning tunneling microscope , materials science , condensed matter physics , microstructure , physics , mathematics , algorithm , metallurgy

Using a three dimensional-quasi-one dimensional-three dimensional model to depict the point contact between a scanning tunneling microscope tip and a metal crystal, by indenting the tip into a metal surface and then withdrawing we have studied the electron transport properties of the microstructure. By means of the single electron approximation and the transfer matrix method, we solve the Schr?dinger equation for this three dimensional system, and calculate the variation regularity of its conductance by quantum mechanics method. The variation of the conductance with constricting and stretching of the constriction is studied, and the quantization of the conductance in units of 2e2/h and 2×2e2/h are obtained.

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