THERMOPOWER OF A ONE-DIMENSIONAL BALLISTIC CONSTRICTION IN THE NONLINEAR REGIME

被引：31

作者：

DZURAK, AS ^{[1
]}

SMITH, CG ^{[1
]}

MARTINMORENO, L ^{[1
]}

PEPPER, M ^{[1
]}

RITCHIE, DA ^{[1
]}

JONES, GAC ^{[1
]}

HASKO, DG ^{[1
]}

机构：

[1] TOSHIBA CAMBRIDGE RES CTR,CAMBRIDGE CB4 4WE,CAMBS,ENGLAND

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1993年 / 5卷 / 43期

关键词：

D O I：

10.1088/0953-8984/5/43/017

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Measurements of the thermopower of a one-dimensional (1D) ballistic constriction are presented and fitted by calculations for a constriction where the local potential at the bottleneck forms a saddle. The calculations show that the thermopower can be well approximated by a linear-response formulation far outside its normal range of applicability. provided that an appropriate average temperature is assumed. The fits give a saddle parameter of omega(y)/omega(x) greater than or equal to 2, which sets an upper limit of 2.2 meV on the 1D sub-band spacing.

引用

页码：8055 / 8064

页数：10

共 24 条

[1] ELECTRONIC CONDUCTANCE OF AN ORIFICE IN A MAGNETIC-FIELD [J].

AVISHAI, Y ;

BAND, YB .

PHYSICAL REVIEW B, 1989, 40 (05) :3429-3432

[2] THERMAL AND ELECTRICAL TRANSPORT FORMALISM FOR ELECTRONIC MICROSTRUCTURES WITH MANY TERMINALS [J].

BUTCHER, PN .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1990, 2 (22) :4869-4878

[3] QUANTIZED TRANSMISSION OF A SADDLE-POINT CONSTRICTION [J].

BUTTIKER, M .

PHYSICAL REVIEW B, 1990, 41 (11) :7906-7909

[4] 4-TERMINAL PHASE-COHERENT CONDUCTANCE [J].

BUTTIKER, M .

PHYSICAL REVIEW LETTERS, 1986, 57 (14) :1761-1764

[5] ON ANALYTICAL DESCRIPTION OF RESONANCE TUNNELLING REACTIONS [J].

CONNOR, JNL .

MOLECULAR PHYSICS, 1968, 15 (01) :37-&

[6] OBSERVATION OF COULOMB-BLOCKADE OSCILLATIONS IN THE THERMOPOWER OF A QUANTUM-DOT [J].

DZURAK, AS ;

SMITH, CG ;

PEPPER, M ;

RITCHIE, DA ;

FROST, JEF ;

JONES, GAC ;

HASKO, DG .

SOLID STATE COMMUNICATIONS, 1993, 87 (12) :1145-1149

[7]

GLAZMAN LI, 1988, JETP LETT, V48, P239

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

HAANAPPEL, EG ;

VANDERMAREL, D .

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

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

KIRCZENOW, G .

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

[10] 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

← 1 2 3 →