TRANSPORT SPECTROSCOPY OF A COULOMB ISLAND IN THE QUANTUM HALL REGIME

被引:343
作者
MCEUEN, PL [1 ]
FOXMAN, EB [1 ]
MEIRAV, U [1 ]
KASTNER, MA [1 ]
MEIR, Y [1 ]
WINGREEN, NS [1 ]
WIND, SJ [1 ]
机构
[1] IBM CORP, THOMAS J WATSON RES CTR, YORKTOWN HTS, NY 10598 USA
关键词
D O I
10.1103/PhysRevLett.66.1926
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Transport measurements of a Coulomb island, a semiconductor dot small enough that Coulomb interactions dominate transport, are presented. At moderate magnetic fields (B = 2-4 T) the amplitude and position of the Coulomb-regulated conductance peaks show distinct periodic structure as a function of B. This structure is shown to result from the B dependence of the quantized single-particle energy states on the island. Analysis of successive peaks is used to map out the single-particle level spectrum of the island as a function of B.
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页码:1926 / 1929
页数:4
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