A TIME-DEPENDENT APPROACH TO CONDUCTANCE IN NARROW CHANNELS

被引：8

作者：

STRATFORD, K

BEEBY, JL

机构：

[1] Dept. of Phys. and Astron., Leicester Univ.

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1993年 / 5卷 / 20期

关键词：

D O I：

10.1088/0953-8984/5/20/001

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

An application of the time-dependent Schrodinger equation to the numerical evaluation of the conductance of a quantum point contact is described. For this purpose a single electron at zero temperature is represented by a Gaussian wave packet. Results are presented for a simple point contact geometry with a smoothly varying confining potential. The flexibility in choice of the model potential could make the approach suitable for a wider range of similar problems.

引用

收藏

页码：L289 / L294

页数：6

相关论文

共 15 条

[1] ON THE BALLISTIC CONDUCTANCE OF SMALL CONTACTS AND ITS RESONANT STRUCTURE - TRUMPET EFFECT WASHES OUT RESONANT STRUCTURE [J].

ESCAPA, L ;

GARCIA, N .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1989, 1 (11) :2125-2129

[2] SOLUTION OF THE SCHRODINGER-EQUATION BY A SPECTRAL METHOD [J].

FEIT, MD ;

FLECK, JA ;

STEIGER, A .

JOURNAL OF COMPUTATIONAL PHYSICS, 1982, 47 (03) :412-433

[3] TIME-DEPENDENT PROPAGATION OF HIGH-ENERGY LASER-BEAMS THROUGH ATMOSPHERE [J].

FLECK, JA ;

MORRIS, JR ;

FEIT, MD .

APPLIED PHYSICS, 1976, 10 (02) :129-160

[4]

GLAZMAN LI, 1988, JETP LETT+, V48, P238

[5] CONDUCTANCE OSCILLATIONS IN TWO-DIMENSIONAL SHARVIN POINT CONTACTS [J].

HAANAPPEL, EG ;

VANDERMAREL, D .

PHYSICAL REVIEW B, 1989, 39 (08) :5484-5487

[6] QUANTUM CONDUCTION IN NARROW CONSTRICTIONS [J].

HE, S ;

DASSARMA, S .

PHYSICAL REVIEW B, 1989, 40 (05) :3379-3382

[7] THEORY OF THE CONDUCTANCE OF BALLISTIC QUANTUM CHANNELS [J].

KIRCZENOW, G .

SOLID STATE COMMUNICATIONS, 1988, 68 (08) :715-718

[8] SPATIAL VARIATION OF CURRENTS AND FIELDS DUE TO LOCALIZED SCATTERERS IN METALLIC CONDUCTION [J].

LANDAUER, R .

IBM JOURNAL OF RESEARCH AND DEVELOPMENT, 1957, 1 (03) :223-231

[9] QUANTAL WAVEPACKET CALCULATIONS OF REACTIVE SCATTERING [J].

MOHAN, V ;

SATHYAMURTHY, N .

COMPUTER PHYSICS REPORTS, 1988, 7 (05) :213-258

[10] BREAKDOWN OF QUANTIZED CONDUCTANCE IN POINT CONTACTS CALCULATED USING REALISTIC POTENTIALS [J].

NIXON, JA ;

DAVIES, JH ;

BARANGER, HU .

PHYSICAL REVIEW B, 1991, 43 (15) :12638-12641