CARRIER RELAXATION IN INTERMIXED GAAS/ALXGA1-XAS QUANTUM WIRES

被引：19

作者：

MAYER, G ^{[1
]}

PRINS, FE ^{[1
]}

LEHR, G ^{[1
]}

SCHWEIZER, H ^{[1
]}

LEIER, H ^{[1
]}

MAILE, BE ^{[1
]}

STRAKA, J ^{[1
]}

FORCHEL, A ^{[1
]}

WEIMANN, G ^{[1
]}

机构：

[1] DEUTSCH BUNDESPOST TELEKOM,FORSCHUNGSZENTRUM,W-6100 DARMSTADT,GERMANY

来源：

PHYSICAL REVIEW B | 1993年 / 47卷 / 07期

关键词：

D O I：

10.1103/PhysRevB.47.4060

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Time-resolved investigations on the photoluminescence of GaAs/AlxGa1-xAs quantum wires as a function of the wire width and the potential well depth indicate a reduction of the energy relaxation in quasi-one-dimensional (1D) systems. The systematic change of the wire width and potential well depth of the quantum wires with mask widths down to 40 nm were realized by ion-implantation-induced intermixing of quantum wells. Lifetime measurements on the high-energy side of the quantum wire emission yield increased decay times for the smallest wires. This is consistent with our observation of increased carrier temperatures and slowed cooling in the quantum wires with increasing carrier confinement. We explain the reduction of the relaxation with the decreased possibility for the scattering particles to fulfill both energy and momentum relaxation in wires with gradually increasing 1D behavior.

引用

页码：4060 / 4063

页数：4

共 18 条

[1] OPTICAL-PROPERTIES OF QUANTUM STRUCTURES FABRICATED BY FOCUSED GA+ ION-BEAM IMPLANTATION [J].

BEINSTINGL, W ;

LI, YJ ;

WEMAN, H ;

MERZ, J ;

PETROFF, PM .

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 1991, 9 (06) :3479-3482

[2] INTRINSIC MECHANISM FOR THE POOR LUMINESCENCE PROPERTIES OF QUANTUM-BOX SYSTEMS [J].

BENISTY, H ;

SOTOMAYORTORRES, CM ;

WEISBUCH, C .

PHYSICAL REVIEW B, 1991, 44 (19) :10945-10948

[3] PHONON-SCATTERING AND ENERGY RELAXATION IN 2-DIMENSIONAL, ONE-DIMENSIONAL, AND ZERO-DIMENSIONAL ELECTRON GASES [J].

BOCKELMANN, U ;

BASTARD, G .

PHYSICAL REVIEW B, 1990, 42 (14) :8947-8951

[4] SIZE EFFECTS IN MULTISUBBAND QUANTUM WIRE STRUCTURES [J].

BRIGGS, S ;

LEBURTON, JP .

PHYSICAL REVIEW B, 1988, 38 (12) :8163-8170

[5] EXCITONIC LIFETIMES IN THIN INXGA1-XAS/INP QUANTUM WELLS [J].

CEBULLA, U ;

BACHER, G ;

FORCHEL, A ;

MAYER, G ;

TSANG, WT .

PHYSICAL REVIEW B, 1989, 39 (09) :6257-6259

[6] OPTICALLY DETECTED CARRIER CONFINEMENT TO ONE AND ZERO DIMENSION IN GAAS QUANTUM-WELL WIRES AND BOXES [J].

CIBERT, J ;

PETROFF, PM ;

DOLAN, GJ ;

PEARTON, SJ ;

GOSSARD, AC ;

ENGLISH, JH .

APPLIED PHYSICS LETTERS, 1986, 49 (19) :1275-1277

[7] CARRIER CONFINEMENT POTENTIAL IN QUANTUM-WELL WIRES FABRICATED BY IMPLANTATION-ENHANCED INTERDIFFUSION IN THE GAAS-GA1-XALXAS SYSTEM [J].

CIBERT, J ;

PETROFF, PM .

PHYSICAL REVIEW B, 1987, 36 (06) :3243-3246

[8] LINEWIDTH DEPENDENCE OF RADIATIVE EXCITON LIFETIMES IN QUANTUM-WELLS [J].

FELDMANN, J ;

PETER, G ;

GOBEL, EO ;

DAWSON, P ;

MOORE, K ;

FOXON, C ;

ELLIOTT, RJ .

PHYSICAL REVIEW LETTERS, 1987, 59 (20) :2337-2340

[9] FABRICATION OF A GAAS QUANTUM-WELL-WIRE STRUCTURE BY GA FOCUSED-ION-BEAM IMPLANTATION AND ITS OPTICAL-PROPERTIES [J].

HIRAYAMA, Y ;

TARUCHA, S ;

SUZUKI, Y ;

OKAMOTO, H .

PHYSICAL REVIEW B, 1988, 37 (05) :2774-2777

[10] COMPOSITIONAL DISORDERING AND VERY-FINE LATERAL DEFINITION OF GAAS-ALGAAS SUPERLATTICES BY FOCUSED GA ION-BEAMS [J].

HIRAYAMA, Y ;

SUZUKI, Y ;

OKAMOTO, H .

SURFACE SCIENCE, 1986, 174 (1-3) :98-104

← 1 2 →