CONDUCTANCE IN VERY CLEAN QUANTUM WIRES AND RINGS

被引：76

作者：

ISMAIL, K ^{[1
]}

WASHBURN, S ^{[1
]}

LEE, KY ^{[1
]}

机构：

[1] IBM CORP,THOMAS J WATSON RES CTR,YORKTOWN HTS,NY 10598

来源：

APPLIED PHYSICS LETTERS | 1991年 / 59卷 / 16期

关键词：

D O I：

10.1063/1.106166

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have observed clear Aharonov-Bohm oscillations in single and multiply connected rings with up to 20% modulation in conductance. The oscillations persist over a very wide range of conductance (0.1-2.0 e2/h) controlled with a gate. Conductance steps as a function of gate bias are observed for the first time in relatively long single and multiple parallel wires and rings. In 2-4-mu-m long wires, the conductance steps are in multiples of 2e2/h. In the case of the rings, steps of 0.8 and 1.2 e2/h are observed in one and two loops, respectively.

引用

页码：1998 / 2000

页数：3

共 16 条

[1]

BUETTIKER M, COMMUNICATION

[2] SPONTANEOUS RESISTANCE SWITCHING AND LOW-FREQUENCY NOISE IN QUANTUM POINT CONTACTS [J].

DEKKER, C ;

SCHOLTEN, AJ ;

LIEFRINK, F ;

EPPENGA, R ;

VANHOUTEN, H ;

FOXON, CT .

PHYSICAL REVIEW LETTERS, 1991, 66 (16) :2148-2151

[3]

HIRAYAMA Y, 1990, JPN J APPL PHYS, V29, P436

[4] ONE-DIMENSIONAL SUBBANDS AND MOBILITY MODULATION IN GAAS ALGAAS QUANTUM WIRES [J].

ISMAIL, K ;

ANTONIADIS, DA ;

SMITH, HI .

APPLIED PHYSICS LETTERS, 1989, 54 (12) :1130-1132

[5]

LEE KY, 1991, INT S ELECTRON PHOTO

[6] LOW-FREQUENCY NOISE IN TRANSPORT THROUGH QUANTUM POINT CONTACTS [J].

LI, YP ;

TSUI, DC ;

HEREMANS, JJ ;

SIMMONS, JA ;

WEIMANN, GW .

APPLIED PHYSICS LETTERS, 1990, 57 (08) :774-776

[7]

MILLIKEN FP, UNPUB

[8]

POYARKOV YB, 1986, JETP LETT+, V44, P373

[9] SCATTERING SUPPRESSION AND HIGH-MOBILITY EFFECT OF SIZE-QUANTIZED ELECTRONS IN ULTRAFINE SEMICONDUCTOR WIRE STRUCTURES [J].

SAKAKI, H .

JAPANESE JOURNAL OF APPLIED PHYSICS, 1980, 19 (12) :L735-L738

[10]

SMITH CG, 1989, J PHYS CM, V1, P673

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