Mode coupling in ballistic quantum wires with double constrictions

被引：3

作者：

Horie, S

Suzuki, A

机构：

[1] Sci Univ Tokyo, Fac Sci, Dept Phys, Shinjuku Ku, Tokyo 1628601, Japan

[2] Sci Univ Tokyo, Fac Sci, Ctr Solid State Phys, Shinjuku Ku, Tokyo 1628601, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2002年 / 71卷 / 01期

关键词：

quantum wire; double constriction; mode-coupling; anti-peak;

D O I：

10.1143/JPSJ.71.204

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have studied the effect of constrictions on the conductance of ballistic quantum wires having double constrictions. Unlike the ideal quantum wires with no constriction, the conductance of these double constricted quantum wires shows peak and dip structures in quantized conductance steps for both symmetric and asymmetric cases. The origin of these dip and peak structures seen in the conductance steps are clarified for these symmetric and asymmetric systems by mode coupling analysis.

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页码：204 / 210

页数：7

相关论文

共 12 条

[1] QUANTUM DEVICES [J].

DATTA, S .

SUPERLATTICES AND MICROSTRUCTURES, 1989, 6 (01) :83-93

[2]

DATTA S, 1995, ELECT TRANSPORT MESO, P125

[3]

FERRY DK, 1997, TRANSPORT NANOSTRUCT, P146

[4] EFFECTS OF WIDTH INCREASE IN THE BALLISTIC QUANTUM WIRE [J].

ITOH, T ;

SANO, N ;

YOSHII, A .

PHYSICAL REVIEW B, 1992, 45 (24) :14131-14135

[5] ELECTRICAL RESISTANCE OF DISORDERED ONE-DIMENSIONAL LATTICES [J].

LANDAUER, R .

PHILOSOPHICAL MAGAZINE, 1970, 21 (172) :863-&

[6] THE EFFECT OF MODE-COUPLING ON BALLISTIC ELECTRON-TRANSPORT IN QUANTUM WIRES [J].

NAKAZATO, K ;

BLAIKIE, RJ .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1991, 3 (30) :5729-5740

[7] QUANTUM BOUND-STATES IN A CLASSICALLY UNBOUND SYSTEM OF CROSSED WIRES [J].

SCHULT, RL ;

RAVENHALL, DG ;

WYLD, HW .

PHYSICAL REVIEW B, 1989, 39 (08) :5476-5479

[8] THEORY FOR A QUANTUM MODULATED TRANSISTOR [J].

SOLS, F ;

MACUCCI, M ;

RAVAIOLI, U ;

HESS, K .

JOURNAL OF APPLIED PHYSICS, 1989, 66 (08) :3892-3906

[9] QUANTIZED CONDUCTANCE OF POINT CONTACTS IN A TWO-DIMENSIONAL ELECTRON-GAS [J].

VANWEES, BJ ;

VANHOUTEN, H ;

BEENAKKER, CWJ ;

WILLIAMSON, JG ;

KOUWENHOVEN, LP ;

VANDERMAREL, D ;

FOXON, CT .

PHYSICAL REVIEW LETTERS, 1988, 60 (09) :848-850

[10] ANALYSIS AND MODELING OF QUANTUM WAVE-GUIDE STRUCTURES AND DEVICES [J].

WEISSHAAR, A ;

LARY, J ;

GOODNICK, SM ;

TRIPATHI, VK .

JOURNAL OF APPLIED PHYSICS, 1991, 70 (01) :355-366