SELF-CONSISTENT HARTREE DESCRIPTION OF N-ELECTRONS IN A QUANTUM-DOT WITH A MAGNETIC-FIELD

被引：11

作者：

OAKNIN, JH ^{[1
]}

PALACIOS, JJ ^{[1
]}

BREY, L ^{[1
]}

TEJEDOR, C ^{[1
]}

机构：

[1] CSIC,INST CIENCIA MAT,E-28049 MADRID,SPAIN

来源：

PHYSICAL REVIEW B | 1994年 / 49卷 / 08期

关键词：

D O I：

10.1103/PhysRevB.49.5718

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have used a Hartree approximation to study the properties of N electrons in a quantum dot in the presence of a magnetic field. Different Landau bands are found to be weakly coupled to each other and an activation energy must be paid for transferring electrons from a Landau band to another. It is only for a discrete set of values of the magnetic field that the Coulomb blockade does not exist and that electrons move freely between two different Landau bands. The chemical potential of the system depends almost linearly on the number of particles and oscillates weakly when the magnetic field is varied in agreement with available experimental information.

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页码：5718 / 5721

页数：4

相关论文

共 26 条

[1]

ASHJOORI RC, 1993, PHYS REV LETT, V71, P613

[2] SINGLE-ELECTRON CAPACITANCE SPECTROSCOPY OF DISCRETE QUANTUM LEVELS [J].

ASHOORI, RC ;

STORMER, HL ;

WEINER, JS ;

PFEIFFER, LN ;

PEARTON, SJ ;

BALDWIN, KW ;

WEST, KW .

PHYSICAL REVIEW LETTERS, 1992, 68 (20) :3088-3091

[3] THEORY OF COULOMB-BLOCKADE OSCILLATIONS IN THE CONDUCTANCE OF A QUANTUM DOT [J].

BEENAKKER, CWJ .

PHYSICAL REVIEW B, 1991, 44 (04) :1646-1656

[4] ELECTRONIC-STRUCTURE OF ULTRASMALL QUANTUM-WELL BOXES [J].

BRYANT, GW .

PHYSICAL REVIEW LETTERS, 1987, 59 (10) :1140-1143

[5] EFFECTS OF QUANTUM LEVELS ON TRANSPORT THROUGH A COULOMB ISLAND [J].

FOXMAN, EB ;

MCEUEN, PL ;

MEIRAV, U ;

WINGREEN, NS ;

MEIR, Y ;

BELK, PA ;

BELK, NR ;

KASTNER, MA ;

WIND, SJ .

PHYSICAL REVIEW B, 1993, 47 (15) :10020-10023

[6] OSCILLATING IMPURITY SPECTRA CAUSED BY NONLINEAR SCREENING IN THE QUANTUM HALL REGIME [J].

GUDMUNDSSON, V .

SOLID STATE COMMUNICATIONS, 1990, 74 (02) :63-67

[7] CONFINEMENT AND SINGLE-ELECTRON TUNNELING IN SCHOTTKY-GATED, LATERALLY SQUEEZED DOUBLE-BARRIER QUANTUM-WELL HETEROSTRUCTURES [J].

GUERET, P ;

BLANC, N ;

GERMANN, R ;

ROTHUIZEN, H .

PHYSICAL REVIEW LETTERS, 1992, 68 (12) :1896-1899

[8] THE INFLUENCE OF COULOMB INTERACTION ON TRANSPORT THROUGH MESOSCOPIC 2-BARRIER STRUCTURES [J].

HAUSLER, W ;

KRAMER, B ;

MASEK, J .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1991, 85 (03) :435-442

[9] MAGNETOLUMINESCENCE FROM CORRELATED ELECTRONS IN QUANTUM DOTS [J].

HAWRYLAK, P ;

PFANNKUCHE, D .

PHYSICAL REVIEW LETTERS, 1993, 70 (04) :485-488

[10] ZERO-DIMENSIONAL STATES AND SINGLE ELECTRON CHARGING IN QUANTUM DOTS [J].

JOHNSON, AT ;

KOUWENHOVEN, LP ;

DEJONG, W ;

VANDERVAART, NC ;

HARMANS, CJPM ;

FOXON, CT .

PHYSICAL REVIEW LETTERS, 1992, 69 (10) :1592-1595