Universal behaviour of metal-insulator transitions in the p-SiGe system

被引:4
作者
Coleridge, PT [1 ]
Zawadzki, P [1 ]
Sachrajda, AS [1 ]
Williams, RL [1 ]
Feng, Y [1 ]
机构
[1] Natl Res Council Canada, Inst Microstruct Sci, Ottawa, ON K1A 0R6, Canada
来源
PHYSICA E | 2000年 / 6卷 / 1-4期
关键词
metal-insulator transition; SiGe; quantum wells;
D O I
10.1016/S1386-9477(99)00142-3
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Magnetoresistance measurements are presented for a strained p-SiGe quantum well sample where the density is varied through the B = 0 metal-insulator transition. The close relationship between this transition, the high-field Hall insulator transition and the filling factor v = 3/2 insulating state is demonstrated. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:268 / 271
页数:4
相关论文
共 17 条
[1]  
CASTELLANI C, 1998, PHYS REV B, V57, P9381
[2]   Magnetotransport coefficients in a two-dimensional SiGe hole gas [J].
Coleridge, PT ;
Sachrajda, AS ;
Lafontaine, H ;
Feng, Y .
PHYSICAL REVIEW B, 1996, 54 (20) :14518-14523
[3]   Universality in an integer quantum Hall transition [J].
Coleridge, PT .
PHYSICAL REVIEW B, 1999, 60 (07) :4493-4496
[4]   The Hall insulator in 2-dimensional SiGe hole gases [J].
Coleridge, PT ;
Sachrajda, AS ;
Zawadzki, P ;
Williams, RL ;
Lafontaine, H .
SOLID STATE COMMUNICATIONS, 1997, 102 (10) :755-758
[5]   Metal-insulator transition at B=0 in p-type SiGe [J].
Coleridge, PT ;
Williams, RL ;
Feng, Y ;
Zawadzki, P .
PHYSICAL REVIEW B, 1997, 56 (20) :12764-12767
[6]  
COLERIDGE PT, 1999, P 34 RENC MOR
[7]   Magnetotransport anomalies in dilute two-dimensional electron systems: An experiment and a model [J].
Dorozhkin, SI ;
Emeleus, CJ ;
Mironov, OA ;
Whall, TE ;
Landwehr, G .
SURFACE SCIENCE, 1996, 361 (1-3) :933-936
[8]   Low temperature magnetotransport of 2D electron and hole systems in high-mobility Si-Si1-xGex heteroctructures [J].
Dunford, RB ;
Newbury, R ;
Stadnik, VA ;
Fang, FF ;
Clark, RG ;
McKenzie, RH ;
Starrett, RP ;
Mitchell, EE ;
Wang, PJ ;
Chu, JO ;
Ismail, KE ;
Meyerson, BS .
SURFACE SCIENCE, 1996, 361 (1-3) :550-555
[9]   2-DIMENSIONAL HOLE GAS IN SI/SIGE HETEROSTRUCTURES [J].
FANG, FF ;
WANG, PJ ;
MEYERSON, BS ;
NOCERA, JJ ;
ISMAIL, KE .
SURFACE SCIENCE, 1992, 263 (1-3) :175-178
[10]  
FINKELSTEIN AM, 1993, SOV PHYS JETP, V57, P97