PHASE-COHERENT ELECTRONS IN A FINITE ANTIDOT LATTICE

被引：75

作者：

SCHUSTER, R ^{[1
]}

ENSSLIN, K ^{[1
]}

WHARAM, D ^{[1
]}

KUHN, S ^{[1
]}

KOTTHAUS, JP ^{[1
]}

BOHM, G ^{[1
]}

KLEIN, W ^{[1
]}

TRANKLE, G ^{[1
]}

WEIMANN, G ^{[1
]}

机构：

[1] TECH UNIV MUNICH, WALTER SCHOTTKY INST, D-85748 GARCHING, GERMANY

来源：

PHYSICAL REVIEW B | 1994年 / 49卷 / 12期

关键词：

D O I：

10.1103/PhysRevB.49.8510

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Antidot lattices with a finite number of periods are fabricated such that the size of the total system is smaller than the phase-coherence length of the electrons at low temperatures. The magnetoresisance is dominated by reproducible quantum fluctuations as well as by classical commensurability oscillations. We attribute these fluctuations to electrons that travel phase coherently over the entire system and interfere with each other under the influence of the geometry of the potential landscape. The presence of Aharonov-Bohm oscillations is identified and related to the existence of classically pinned electron orbits.

引用

页码：8510 / 8513

页数：4

共 21 条

[1] SIGNIFICANCE OF ELECTROMAGNETIC POTENTIALS IN THE QUANTUM THEORY [J].

AHARONOV, Y ;

BOHM, D .

PHYSICAL REVIEW, 1959, 115 (03) :485-491

[2] MAGNETOTRANSPORT THROUGH AN ANTIDOT LATTICE IN GAAS-ALXGA1-XAS HETEROSTRUCTURES [J].

ENSSLIN, K ;

PETROFF, PM .

PHYSICAL REVIEW B, 1990, 41 (17) :12307-12310

[3] FABRICATION OF QUASI-ZERO-DIMENSIONAL SUB-MICRON DOT ARRAY AND CAPACITANCE SPECTROSCOPY IN A GAAS/ALGAAS HETEROSTRUCTURE [J].

FANG, H ;

ZELLER, R ;

STILES, PJ .

APPLIED PHYSICS LETTERS, 1989, 55 (14) :1433-1435

[4] MAGNETORESISTANCE DUE TO CHAOS AND NONLINEAR RESONANCES IN LATERAL SURFACE SUPERLATTICES [J].

FLEISCHMANN, R ;

GEISEL, T ;

KETZMERICK, R .

PHYSICAL REVIEW LETTERS, 1992, 68 (09) :1367-1370

[5]

GUSEV GM, 1992, JETP LETT+, V55, P123

[6]

GUSEV GM, IN PRESS SOLID STATE

[7] ELECTRONS IN LATERALLY PERIODIC NANOSTRUCTURES [J].

HANSEN, W ;

KOTTHAUS, JP ;

MERKT, U .

SEMICONDUCTORS AND SEMIMETALS, VOL 35: NANOSTRUCTURED SYSTEMS, 1992, 35 :279-380

[8] POSTMODERN QUANTUM-MECHANICS [J].

HELLER, EJ ;

TOMSOVIC, S .

PHYSICS TODAY, 1993, 46 (07) :38-46

[9] FABRICATION OF COUPLED QUANTUM DOT ARRAYS WITH A 100-150 NM PERIOD [J].

LEE, KY ;

KERN, DP ;

ISMAIL, K ;

HAUG, RJ ;

SMITH, TP ;

MASSELINK, WT ;

HONG, JM .

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 1990, 8 (06) :1366-1370

[10] LOCALIZATION IN GAAS ELECTRON-DOTS AND ANTI-DOTS [J].

LORKE, A ;

KOTTHAUS, JP ;

PLOOG, K .

SUPERLATTICES AND MICROSTRUCTURES, 1991, 9 (01) :103-106

← 1 2 3 →