Observation of chiral surface states in the integer quantum Hall effect

被引:75
作者
Druist, DP [1 ]
Turley, PJ
Maranowski, KD
Gwinn, EG
Gossard, AC
机构
[1] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA
[2] Univ Calif Santa Barbara, Dept Mat Engn, Santa Barbara, CA 93106 USA
关键词
D O I
10.1103/PhysRevLett.80.365
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We have made experimental studies of low-temperature, high-magnetic field electronic transport in layered, three-dimensional semiconductor structures. In fields that produce the integer quantum Hall effect for transport parallel to the layers, we find deep minima in the vertical conductance G(zz). Between these quantum Hall states, the size dependence of G(zz) indicates that vertical transport is through the bulk. Within quantum Hall states, we find that vertical transport is along the surface of the sample, via a "sheath" of extended surface states. This surface sheath is a novel two-dimensional system that exhibits a metallic conductivity much less than e(2)/h.
引用
收藏
页码:365 / 368
页数:4
相关论文
共 15 条
[1]   Chiral surface states in the bulk quantum Hall effect [J].
Balents, L ;
Fisher, MPA .
PHYSICAL REVIEW LETTERS, 1996, 76 (15) :2782-2785
[2]  
BALENTS L, 1996, NUCL PHYS B, V483, P601
[3]   3-DIMENSIONAL DISORDERED CONDUCTORS IN A STRONG MAGNETIC-FIELD - SURFACE-STATES AND QUANTUM HALL PLATEAUS [J].
CHALKER, JT ;
DOHMEN, A .
PHYSICAL REVIEW LETTERS, 1995, 75 (24) :4496-4499
[4]  
FISHER ME, COMMUNICATION
[5]   Scaling and crossover functions for the conductance in the directed network model of edge states [J].
Gruzberg, IA ;
Read, N ;
Sachdev, S .
PHYSICAL REVIEW B, 1997, 55 (16) :10593-10601
[6]   ANDERSON TRANSITION IN A STRONG MAGNETIC-FIELD [J].
HENNEKE, M ;
KRAMER, B ;
OHTSUKI, T .
EUROPHYSICS LETTERS, 1994, 27 (05) :389-394
[7]   SCALING THEORY OF THE INTEGER QUANTUM HALL-EFFECT [J].
HUCKESTEIN, B .
REVIEWS OF MODERN PHYSICS, 1995, 67 (02) :357-396
[8]   DISORDERED ELECTRONIC SYSTEMS [J].
LEE, PA ;
RAMAKRISHNAN, TV .
REVIEWS OF MODERN PHYSICS, 1985, 57 (02) :287-337
[9]   RESONANT-TUNNELING BETWEEN QUANTUM HALL EDGE STATES [J].
MOON, K ;
YI, H ;
KANE, CL ;
GIRVIN, SM ;
FISHER, MPA .
PHYSICAL REVIEW LETTERS, 1993, 71 (26) :4381-4384
[10]   ANDERSON TRANSITION IN 3-DIMENSIONAL SYSTEMS IN STRONG MAGNETIC-FIELDS [J].
OHTSUKI, T ;
KRAMER, B ;
ONO, Y .
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1993, 62 (01) :224-238