Conductance through analytic constrictions

被引：0
|
作者：
Koudela, D. [1 ,2 ]
Uimonen, A. -M. [1 ,2 ]
Hakkinen, H. [1 ,2 ,3 ]
机构：
[1] Univ Jyvaskyla, Nanosci Ctr, Jyvaskyla 40014, Finland
[2] Univ Jyvaskyla, Dept Phys, Jyvaskyla 40014, Finland
[3] Univ Jyvaskyla, Dept Chem, Jyvaskyla 40014, Finland
来源：
EUROPEAN PHYSICAL JOURNAL B | 2009年 / 68卷 / 01期
基金：
芬兰科学院;
关键词：
MOLECULAR JUNCTIONS; ELECTRON-TRANSPORT; SINGLE-MOLECULE; NANOCONTACTS; SCATTERING;
D O I：
10.1140/epjb/e2009-00072-0
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We study the dependence of the intrinsic conductance of a nanocontact on its shape by using the recursion-transfer-matrix method. Hour-glass, torus, and spherical shapes are defined through analytic potentials, the latter two serving as rough models for ring-like and spherical molecules, respectively. The sensitivity of the conductance to geometric details is analyzed and discussed. Strong resonance effects are found for a spherical contact weakly coupled to electron reservoirs.
引用
收藏
页码：111 / 117
页数：7
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