Giant backscattering magnetoresistance resonance and quantum dot electronic structure

被引：28

作者：

Stopa, M

Bird, JP

Ishibashi, K

Aoyagi, Y

Sugano, T

机构：

[1] RIKEN (The Institute of Physical and Chemical Research) 2-1, Saitama, 351-01, Hirosawa, Wako-Shi

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 76卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.76.2145

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We self-consistently calculate in 3D the magnetic field dependent potential contour and semiclassical spectrum of a lateral quantum dot to analyze magnetotransport experiments. The spectrum differs dramatically from what had previously been assumed due to magnetically induced terraces in the potential. We show that a striking giant backscattering resonance in the data results from an increased Fermi level density of states associated with a terrace in the potential.

引用

收藏

页码：2145 / 2148

页数：4

相关论文

共 19 条

[1] N-ELECTRON GROUND-STATE ENERGIES OF A QUANTUM-DOT IN MAGNETIC-FIELD [J].

ASHOORI, RC ;

STORMER, HL ;

WEINER, JS ;

PFEIFFER, LN ;

BALDWIN, KW ;

WEST, KW .

PHYSICAL REVIEW LETTERS, 1993, 71 (04) :613-616

[2] EDGE CHANNELS FOR THE FRACTIONAL QUANTUM HALL-EFFECT [J].

BEENAKKER, CWJ .

PHYSICAL REVIEW LETTERS, 1990, 64 (02) :216-219

[3] MAGNETO-COULOMB OSCILLATIONS [J].

BIRD, JP ;

ISHIBASHI, K ;

STOPA, M ;

TAYLOR, RP ;

AOYAGI, Y ;

SUGANO, T .

PHYSICAL REVIEW B, 1994, 49 (16) :11488-11491

[4] SPECTRAL CHARACTERISTICS OF CONDUCTANCE FLUCTUATIONS IN BALLISTIC QUANTUM DOTS [J].

BIRD, JP ;

ISHIBASHI, K ;

AOYAGI, Y ;

SUGANO, T ;

OCHIAI, Y .

PHYSICAL REVIEW B, 1994, 50 (24) :18678-18681

[5] SYMMETRY OF ELECTRICAL-CONDUCTION [J].

BUTTIKER, M .

IBM JOURNAL OF RESEARCH AND DEVELOPMENT, 1988, 32 (03) :317-334

[6] A UNIFIED TRANSPORT-THEORY FOR THE INTEGRAL AND FRACTIONAL QUANTUM HALL-EFFECTS - PHASE BOUNDARIES, EDGE CURRENTS, AND TRANSMISSION REFLECTION PROBABILITIES [J].

CHANG, AM .

SOLID STATE COMMUNICATIONS, 1990, 74 (09) :871-876

[7] BALLISTIC CONDUCTANCE OF INTERACTING ELECTRONS IN THE QUANTUM HALL REGIME [J].

CHKLOVSKII, DB ;

MATVEEV, KA ;

SHKLOVSKII, BI .

PHYSICAL REVIEW B, 1993, 47 (19) :12605-12617

[8] CROSSOVER TO GLOBAL ADIABATICS IN 2D BALLISTIC TRANSPORT [J].

GLAZMAN, LI ;

JONSON, M .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1989, 1 (32) :5547-5554

[9] SCATTERING MODELS OF CONDUCTION AROUND AN ANTIDOT IN A MAGNETIC-FIELD [J].

KIRCZENOW, G .

PHYSICAL REVIEW B, 1994, 50 (03) :1649-1655

[10] DIFFRACTION, PHASE BREAKING, AND HALL ANOMALIES IN QUANTUM DOTS [J].

KIRCZENOW, G ;

CASTANO, E .

PHYSICAL REVIEW B, 1991, 43 (09) :7343-7346