PERIODIC MODULATION OF COULOMB-BLOCKADE OSCILLATIONS IN HIGH MAGNETIC-FIELDS

被引:20
作者
HEINZEL, T [1 ]
WHARAM, DA [1 ]
KOTTHAUS, JP [1 ]
BOHM, G [1 ]
KLEIN, W [1 ]
TRANKLE, G [1 ]
WEIMANN, G [1 ]
机构
[1] TECH UNIV MUNICH,WALTER SCHOTTKY INST,D-85748 GARCHING,GERMANY
来源
PHYSICAL REVIEW B | 1994年 / 50卷 / 20期
关键词
D O I
10.1103/PhysRevB.50.15113
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Coulomb-blockade oscillations in transport through a lateral quantum dot at small Landau-level filling factors are investigated. We observe both a periodic modulation of the peak conductance as well as a striking modulation of the peak separation. We show that below a Landau-level filling factor of 3 a single-particle description of these effects fails and the depopulation of the Landau levels with decreasing electron number can occur noncyclically. We interpret our measurements in terms of a recently developed phase diagram that characterizes the states of the quantum dot. © 1994 The American Physical Society.
引用
收藏
页码:15113 / 15119
页数:7
相关论文
共 19 条
[11]   ACTIVATED TRANSPORT THROUGH A QUANTUM DOT WITH EXTENDED EDGE CHANNELS [J].
MARMORKOS, IK ;
BEENAKKER, CWJ .
PHYSICAL REVIEW B, 1992, 46 (23) :15562-15565
[12]   TRANSPORT SPECTROSCOPY OF A COULOMB ISLAND IN THE QUANTUM HALL REGIME [J].
MCEUEN, PL ;
FOXMAN, EB ;
MEIRAV, U ;
KASTNER, MA ;
MEIR, Y ;
WINGREEN, NS ;
WIND, SJ .
PHYSICAL REVIEW LETTERS, 1991, 66 (14) :1926-1929
[13]   SELF-CONSISTENT ADDITION SPECTRUM OF A COULOMB ISLAND IN THE QUANTUM HALL REGIME [J].
MCEUEN, PL ;
FOXMAN, EB ;
KINARET, J ;
MEIRAV, U ;
KASTNER, MA ;
WINGREEN, NS ;
WIND, SJ .
PHYSICAL REVIEW B, 1992, 45 (19) :11419-11422
[14]   TRANSPORT THROUGH A STRONGLY INTERACTING ELECTRON-SYSTEM - THEORY OF PERIODIC CONDUCTANCE OSCILLATIONS [J].
MEIR, Y ;
WINGREEN, NS ;
LEE, PA .
PHYSICAL REVIEW LETTERS, 1991, 66 (23) :3048-3051
[15]   WIGNER MOLECULE ON THE TOP OF A QUANTUM-DOT [J].
NAZAROV, YV ;
KHAETSKII, AV .
PHYSICAL REVIEW B, 1994, 49 (07) :5077-5080
[16]   PERIODIC ENVELOPE OF COULOMB-BLOCKADE OSCILLATIONS IN THE QUANTUM HALL REGIME [J].
STARING, AAM ;
ALPHENAAR, BW ;
VANHOUTEN, H ;
MOLENKAMP, LW ;
BUYK, OJA ;
MABESOONE, MAA ;
FOXON, CT .
PHYSICAL REVIEW B, 1992, 46 (19) :12869-12872
[17]   CHARGING EFFECTS IN QUANTUM DOTS IN A MAGNETIC-FIELD [J].
VANDERVAART, NC ;
VANSTEVENINCK, MPD ;
HARMANS, CJPM ;
FOXON, CT .
PHYSICA B, 1994, 194 :1251-1252
[18]   COMPETING CHANNELS IN SINGLE-ELECTRON TUNNELING THROUGH A QUANTUM-DOT [J].
WEIS, J ;
HAUG, RJ ;
VONKLITZING, K ;
PLOOG, K .
PHYSICAL REVIEW LETTERS, 1993, 71 (24) :4019-4022
[19]  
1991, Z PHYS B, V85