Shot noise reduction in quantum wires with the 0.7 structure

被引：8
|
作者：
Ramsak, A [1 ]
Jefferson, JH
机构：
[1] Univ Ljubljana, Fac Math & Phys, Ljubljana 61000, Slovenia
[2] Jozef Stefan Inst, Ljubljana, Slovenia
[3] QinetiQ, Sensors & Elect Div, Great Malvern, England
来源：
PHYSICAL REVIEW B | 2005年 / 71卷 / 16期
关键词：
D O I：
10.1103/PhysRevB.71.161311
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Shot noise reduction in quantum wires is interpreted within the model for the 0.7 structure in the conductance of near perfect quantum wires [T. Rejec, A. Ramsak, and J. H. Jefferson, Phys. Rev. B 62, 12985 (2000)]. It is shown how the Fano factor structure is related to the specific structure of the conductance as a consequence of the singlet-triplet nature of the resonances with the probability ratio 1:3. An additional feature in the Fano factor, related to the 0.25 structure in conductance, is predicted.
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页数：4
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