Step-edge kinetics driving the formation of atomically flat (110) GaAs surfaces

被引：12
作者：
Oh, JW
Yoshita, M
Akiyama, H
Pfeiffer, LN
West, KW
机构：
[1] Univ Tokyo, Inst Solid State Phys, Chiba 2778581, Japan
[2] JST, CREST, Chiba 2778581, Japan
[3] Lucent Technol, Bell Labs, Murray Hill, NJ 07974 USA
来源：
APPLIED PHYSICS LETTERS | 2003年 / 82卷 / 11期
关键词：
D O I：
10.1063/1.1560575
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Atomically flat (110) GaAs surfaces fabricated by the cleaved-edge overgrowth method and high-temperature growth-interrupt annealing are characterized at the atomic scale. We observe atomically flat (110) surfaces extending over areas more than 100 mum in size. Moreover, deposition of slightly less or more than integral monolayers (MLs) causes the appearance of characteristic step-edge shapes such as 1-ML-deep pits, or 2-to-3-ML-high isolated islands. Statistical analysis on the size and shape distribution of the 1-ML-deep pits supports a simple model based on the stability of Ga and As atoms on step edges with different bonding configurations, and reveals driving force to form an atomically flat (110) surface. (C) 2003 American Institute of Physics.
引用
收藏
页码：1709 / 1711
页数：3
相关论文
共 14 条
[1]   One-dimensional excitons in GaAs quantum wires [J].
Akiyama, H .
JOURNAL OF PHYSICS-CONDENSED MATTER, 1998, 10 (14) :3095-3139
[2]   Coulomb-correlated electron-hole plasma and gain in a quantum-wire laser of high uniformity [J].
Akiyama, H ;
Pfeiffer, LN ;
Yoshita, M ;
Pinczuk, A ;
Littlewood, PB ;
West, KW ;
Matthews, MJ ;
Wynn, J .
PHYSICAL REVIEW B, 2003, 67 (04)
[3]   One-dimensional continuum and exciton states in quantum wires [J].
Akiyama, H ;
Yoshita, M ;
Pfeiffer, LN ;
West, KW ;
Pinczuk, A .
APPLIED PHYSICS LETTERS, 2003, 82 (03) :379-381
[4]   Observation of large many-body Coulomb interaction effects in a doped quantum wire [J].
Akiyama, H ;
Pfeiffer, LN ;
Pinczuk, A ;
West, KW ;
Yoshita, M .
SOLID STATE COMMUNICATIONS, 2002, 122 (3-4) :169-173
[5]   OBSERVATION OF QUANTUM WIRE FORMATION AT INTERSECTING QUANTUM-WELLS [J].
GONI, AR ;
PFEIFFER, LN ;
WEST, KW ;
PINCZUK, A ;
BARANGER, HU ;
STORMER, HL .
APPLIED PHYSICS LETTERS, 1992, 61 (16) :1956-1958
[6]   Lasing from a single-quantum wire [J].
Hayamizu, Y ;
Yoshita, M ;
Watanabe, S ;
Akiyama, H ;
Pfeiffer, LN ;
West, KW .
APPLIED PHYSICS LETTERS, 2002, 81 (26) :4937-4939
[7]   FORMATION OF A HIGH-QUALITY 2-DIMENSIONAL ELECTRON-GAS ON CLEAVED GAAS [J].
PFEIFFER, L ;
WEST, KW ;
STORMER, HL ;
EISENSTEIN, JP ;
BALDWIN, KW ;
GERSHONI, D ;
SPECTOR, J .
APPLIED PHYSICS LETTERS, 1990, 56 (17) :1697-1699
[8]   LATERALLY SQUEEZED EXCITONIC WAVE-FUNCTION IN QUANTUM WIRES [J].
SOMEYA, T ;
AKIYAMA, H ;
SAKAKI, H .
PHYSICAL REVIEW LETTERS, 1995, 74 (18) :3664-3667
[9]   Enhanced binding energy of one-dimensional excitons in quantum wires [J].
Someya, T ;
Akiyama, H ;
Sakaki, H .
PHYSICAL REVIEW LETTERS, 1996, 76 (16) :2965-2968
[10]   LASING FROM EXCITONS IN QUANTUM WIRES [J].
WEGSCHEIDER, W ;
PFEIFFER, LN ;
DIGNAM, MM ;
PINCZUK, A ;
WEST, KW ;
MCCALL, SL ;
HULL, R .
PHYSICAL REVIEW LETTERS, 1993, 71 (24) :4071-4074
12