RENORMALIZATION-GROUP CALCULATIONS OF GROUND-STATE AND TRANSPORT-PROPERTIES OF ULTRASMALL TUNNEL-JUNCTIONS

被引：9

作者：

FROTA, HO

FLENSBERG, K

机构：

[1] OAK RIDGE NATL LAB,DIV SOLID STATE,OAK RIDGE,TN 37831

[2] UNIV AMAZONAS,INST CIENCIAS EXATAS,DEPT FIS,BR-69068 MANUAS AM,BRAZIL

来源：

PHYSICAL REVIEW B | 1992年 / 46卷 / 23期

关键词：

D O I：

10.1103/PhysRevB.46.15207

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have done a numerical renormalization-group calculation for a Hamiltonian modeling charging effect in ultrasmall tunnel junctions. We find that the conductance is enhanced by the quantum charge fluctuations allowing tunneling below the charging energy gap. However, in all cases the conductance is found to vanish at zero frequency.

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页码：15207 / 15211

页数：5

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