Novel structures near ν=9/2 in short-period unidirectional lateral superlattices

被引:8
作者
Endo, A
Iye, Y
机构
[1] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
[2] Japan Sci & Technol Corp, CREST, Yokohama, Kanagawa, Japan
关键词
heterojunctions; electronic transport; galvanomagnetic effects;
D O I
10.1016/S0038-1098(00)00448-8
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
Unidirectional lateral superlattices with a period a = 92 nm fabricated from two-dimensional electron gas (2DEG) with mobility mu = 76 m(2)/V s show novel structures around v = 9/2 at low temperatures (50 mK less than or equal to T less than or equal to 350 mK). A shallow and broad dent with peaks on both sides appears when the direction of current is parallel to the direction of potential modulation, while a small peak emerges for the current direction parallel to the stripes of the grating. The observed phenomena resemble, albeit much smaller in magnitude, the anisotropic resistivity at half-filling of higher Landau levels recently observed in the plain 2DEGs with ultrahigh mobility and may be associated with the formation of charge density wave (CDW). (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:249 / 254
页数:6
相关论文
共 28 条
  • [1] LANDAU-LEVEL BROADENING IN GAAS/ALGAAS HETEROJUNCTIONS
    ANDO, T
    MURAYAMA, Y
    [J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1985, 54 (04) : 1519 - 1527
  • [2] GUIDING-CENTER-DRIFT RESONANCE IN A PERIODICALLY MODULATED TWO-DIMENSIONAL ELECTRON-GAS
    BEENAKKER, CWJ
    [J]. PHYSICAL REVIEW LETTERS, 1989, 62 (17) : 2020 - 2023
  • [3] EXPERIMENTS ON INELASTIC-SCATTERING IN THE INTEGER QUANTUM HALL-EFFECT
    CHOW, E
    WEI, HP
    [J]. PHYSICAL REVIEW B, 1995, 52 (19): : 13749 - 13752
  • [4] Strongly anisotropic transport in higher two-dimensional Landau levels
    Du, RR
    Tsui, DC
    Stormer, HL
    Pfeiffer, LN
    Baldwin, KW
    West, KW
    [J]. SOLID STATE COMMUNICATIONS, 1999, 109 (06) : 389 - 394
  • [5] ENDO A, 2000, IN PRESS PHYS REV B
  • [6] Endo A., UNPUB
  • [7] Ground state of a two-dimensional electron liquid in a weak magnetic field
    Fogler, MM
    Koulakov, AA
    Shklovskii, BI
    [J]. PHYSICAL REVIEW B, 1996, 54 (03): : 1853 - 1871
  • [8] Laughlin liquid to charge-density-wave transition at high Landau levels
    Fogler, MM
    Koulakov, AA
    [J]. PHYSICAL REVIEW B, 1997, 55 (15): : 9326 - 9329
  • [9] Calixarene electron beam resist for nano-lithography
    Fujita, J
    Ohnishi, Y
    Manako, S
    Ochiai, Y
    Nomura, E
    Sakamoto, T
    Matsui, S
    [J]. JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1997, 36 (12B): : 7769 - 7772
  • [10] Fujita J, 1996, APPL PHYS LETT, V68, P1297, DOI 10.1063/1.115958