TUNNELING THROUGH RECTANGULAR QUANTUM DOTS AT HIGH MAGNETIC-FIELDS

被引：19

作者：

JI, ZL

机构：

[1] Department of Physics and Measurement Technology, Linköping University

来源：

PHYSICAL REVIEW B | 1994年 / 50卷 / 07期

关键词：

D O I：

10.1103/PhysRevB.50.4658

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Transport in a quasi-one-dimensional wire containing a rectangular quantum dot in a strong magnetic field is studied numerically. As the width of the wire is varied, a rectangular dot on the wire introduces peak or dip structures in the conductance. The charge-density distribution and current-flow pattern clearly show that the Landau-level coupling between the sere-dimensional (OD) state and the extended state is the origin of these structures. At the resonant points, which correspond to OD states in the dot, Landau-level coupling becomes essential and the propagation of one Landau level is enhanced or blocked by the OD state of a different Landau level.

引用

收藏

页码：4658 / 4663

页数：6

相关论文

共 34 条

[21] SINGLE-ELECTRON CHARGING OF QUANTUM-DOT ATOMS [J].

MEURER, B ;

HEITMANN, D ;

PLOOG, K .

PHYSICAL REVIEW LETTERS, 1992, 68 (09) :1371-1374

[22] MODE-MATCHING TECHNIQUE FOR TRANSMISSION CALCULATIONS IN ELECTRON WAVE-GUIDES AT HIGH MAGNETIC-FIELDS [J].

PALACIOS, JJ ;

TEJEDOR, C .

PHYSICAL REVIEW B, 1993, 48 (08) :5386-5394

[23] COULOMB-BLOCKADE IN RESONANT MAGNETOTUNNELING THROUGH RECTANGULAR QUANTUM DOTS [J].

PALACIOS, JJ ;

MARTINMORENO, L ;

TEJEDOR, C .

PHYSICA B, 1993, 189 (1-4) :27-33

[24] QUANTUM LIMITATION ON COULOMB BLOCKADE OBSERVED IN A 2D ELECTRON-SYSTEM [J].

PASQUIER, C ;

MEIRAV, U ;

WILLIAMS, FIB ;

GLATTLI, DC ;

JIN, Y ;

ETIENNE, B .

PHYSICAL REVIEW LETTERS, 1993, 70 (01) :69-72

[25] OBSERVATION OF DISCRETE ELECTRONIC STATES IN A ZERO-DIMENSIONAL SEMICONDUCTOR NANOSTRUCTURE [J].

REED, MA ;

RANDALL, JN ;

AGGARWAL, RJ ;

MATYI, RJ ;

MOORE, TM ;

WETSEL, AE .

PHYSICAL REVIEW LETTERS, 1988, 60 (06) :535-537

[26] SPIN-CONTROLLED RESONANCES IN THE MAGNETOTRANSPORT IN QUANTUM DOTS [J].

SACHRAJDA, AS ;

TAYLOR, RP ;

DHARMAWARDANA, C ;

ZAWADZKI, P ;

ADAMS, JA ;

COLERIDGE, PT .

PHYSICAL REVIEW B, 1993, 47 (11) :6811-6814

[27] QUANTUM HALL-EFFECT AND GENERAL NARROW-WIRE CIRCUITS [J].

SCHULT, RL ;

WYLD, HW ;

RAVENHALL, DG .

PHYSICAL REVIEW B, 1990, 41 (18) :12760-12780

[28] SPECTROSCOPY OF ELECTRONIC STATES IN INSB QUANTUM DOTS [J].

SIKORSKI, C ;

MERKT, U .

PHYSICAL REVIEW LETTERS, 1989, 62 (18) :2164-2167

[29] ELECTRONIC SPECTROSCOPY OF ZERO-DIMENSIONAL SYSTEMS [J].

SMITH, TP ;

LEE, KY ;

KNOEDLER, CM ;

HONG, JM ;

KERN, DP .

PHYSICAL REVIEW B, 1988, 38 (03) :2172-2175

[30] CONDUCTANCE FLUCTUATIONS IN QUANTUM WIRES [J].

TAMURA, H ;

ANDO, T .

PHYSICAL REVIEW B, 1991, 44 (04) :1792-1800

← 1 2 3 4 →