X-ray-diffraction study of size-dependent strain in quantum-wire structures

被引：48

作者：

Shen, Q ^{[1
]}

Kycia, SW ^{[1
]}

Tentarelli, ES ^{[1
]}

Schaff, WJ ^{[1
]}

Eastman, LF ^{[1
]}

机构：

[1] CORNELL UNIV,SCH ELECT ENGN,ITHACA,NY 14853

来源：

PHYSICAL REVIEW B | 1996年 / 54卷 / 23期

关键词：

D O I：

10.1103/PhysRevB.54.16381

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report a synchrotron x-ray-diffraction study of the strain field in embedded In0.2Ga0.8As/GaAs (001) quantum wires of widths 50-250 nm. Our results show a size-dependent orthorhombic lattice deformation in the wires and a linearly strained interfacial region near the wire sidewalls. The measured strain is responsible for an unusual band-gap energy increase that is several times larger than the quantum confinement effect, indicating that strain effects contribute significantly to band-edge energies in this and other quantum structures.

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收藏

页码：16381 / 16384

页数：4

相关论文

共 15 条

[1] ENHANCEMENT OF THE ELECTRONIC EFFECTIVE-MASS IN QUANTUM WIRES [J].

CHEN, R ;

BAJAJ, KK .

PHYSICAL REVIEW B, 1994, 50 (03) :1949-1952

[2] MEASUREMENT OF NONUNIFORM DISTRIBUTION OF STRAIN IN INGAAS/GAAS QUANTUM WIRES [J].

CHEN, YP ;

REED, JD ;

SCHAFF, WJ ;

EASTMAN, LF .

APPLIED PHYSICS LETTERS, 1994, 65 (17) :2202-2204

[3] STRAIN AND PIEZOELECTRIC FIELDS IN ARBITRARILY ORIENTED SEMICONDUCTOR HETEROSTRUCTURES .2. QUANTUM WIRES [J].

DECARO, L ;

TAPFER, L .

PHYSICAL REVIEW B, 1995, 51 (07) :4381-4387

[4]

Gippius NA, 1996, MATER RES SOC SYMP P, V405, P121

[5]

HELLWEGE KH, 1982, LANDOLTBORNSTEIN, V17, P25443

[6] ELASTIC STRAINS IN GAAS/ALAS QUANTUM DOTS STUDIED BY HIGH-RESOLUTION X-RAY-DIFFRACTION [J].

HOLY, V ;

DARHUBER, AA ;

BAUER, G ;

WANG, PD ;

SONG, YP ;

TORRES, CMS ;

HOLLAND, MC .

PHYSICAL REVIEW B, 1995, 52 (11) :8348-8357

[7]

Kirk W. P., 1992, Nanostructures and mesoscopic systems

[8] SIZE DEPENDENCE OF LATERAL QUANTUM-CONFINEMENT EFFECTS OF THE OPTICAL-RESPONSE IN IN0.53GA0.47AS/INP QUANTUM WIRES [J].

NOTOMI, M ;

NOJIMA, S ;

OKAMOTO, M ;

IWAMURA, H ;

TAMAMURA, T ;

HAMMERSBERG, J ;

WEMAN, H .

PHYSICAL REVIEW B, 1995, 52 (15) :11073-11088

[9] DIMENSIONALITY EFFECTS ON STRAIN AND QUANTUM CONFINEMENT IN LATTICE-MISMATCHED INASXP1-X/PNP QUANTUM WIRES [J].

NOTOMI, M ;

HAMMERSBERG, J ;

WEMAN, H ;

NOJIMA, S ;

SUGIURA, H ;

OKAMOTO, M ;

TAMAMURA, T ;

POTEMSKI, M .

PHYSICAL REVIEW B, 1995, 52 (15) :11147-11158

[10]

PIKUS GE, 1959, SOV PHYS-SOLID STATE, V1, P1502