Conduction-band mixing in T- and V-shaped quantum wires

被引：35

作者：

Pescetelli, S

DiCarlo, A

Lugli, P

机构：

[1] INFM-Dipartimento di Ingegneria Elettronica, Università di Roma “Tor Vergata”

来源：

PHYSICAL REVIEW B | 1997年 / 56卷 / 04期

关键词：

D O I：

10.1103/PhysRevB.56.R1668

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

By means of a tight-binding approach, we have studied the influence of barrier states on the conduction band of the T-and V-shaped quantum wires. For AlAs/GaAs superlattices or pure AlAs barriers, X-related states induce strong modifications in the wire conduction band that cannot be accounted For by a simple effective-mass approximation. With respect to quantum wells, we show that the quasi-one-dimensional confinement of quantum wires enhances valley mixing and leads to a reduction in the energy of lower lying states.

引用

收藏

页码：R1668 / R1671

页数：4

相关论文

共 37 条

[1] TIGHT-BINDING ANALYSIS OF ENERGY-BAND STRUCTURES IN QUANTUM WIRES [J].

ARAKAWA, Y ;

YAMAUCHI, T ;

SCHULMAN, JN .

PHYSICAL REVIEW B, 1991, 43 (06) :4732-4738

[2] X-RELATED AND GAMMA-RELATED TUNNELING RESONANCES IN GAAS/ALAS DOUBLE-BARRIER STRUCTURES AT HIGH-PRESSURE [J].

AUSTING, DG ;

KLIPSTEIN, PC ;

HIGGS, AW ;

HUTCHINSON, HJ ;

SMITH, GW ;

ROBERTS, JS ;

HILL, G .

PHYSICAL REVIEW B, 1993, 47 (03) :1419-1433

[3] PATTERNED QUANTUM WELL HETEROSTRUCTURES GROWN BY OMCVD ON NON-PLANAR SUBSTRATES - APPLICATIONS TO EXTREMELY NARROW SQW LASERS [J].

BHAT, R ;

KAPON, E ;

HWANG, DM ;

KOZA, MA ;

YUN, CP .

JOURNAL OF CRYSTAL GROWTH, 1988, 93 (1-4) :850-856

[4] TIGHT-BINDING MODEL FOR GAAS/ALAS RESONANT-TUNNELING DIODES [J].

BOYKIN, TB ;

VANDERWAGT, JPA ;

HARRIS, JS .

PHYSICAL REVIEW B, 1991, 43 (06) :4777-4784

[5]

CADE NA, 1987, SOLID STATE COMMUN, V64, P283, DOI 10.1016/0038-1098(87)90965-3

[6] GAMMA-CHI INTERVALLEY TRANSFER IN SINGLE ALAS BARRIERS UNDER HYDROSTATIC-PRESSURE [J].

CARBONNEAU, Y ;

BEERENS, J ;

CURY, LA ;

LIU, HC ;

BUCHANAN, M .

APPLIED PHYSICS LETTERS, 1993, 62 (16) :1955-1957

[7] THEORY OF GAIN IN QUANTUM-WIRE LASERS GROWN IN V-GROOVES [J].

CITRIN, DS ;

CHANG, YC .

IEEE JOURNAL OF QUANTUM ELECTRONICS, 1993, 29 (01) :97-108

[8]

COLOMBO L, 1996, ANN REV COMPUTATIONA, V4, P147, DOI DOI 10.1142/3159

[9] Self-consistent tight-binding calculations of electronic and optical properties of semiconductor nanostructures [J].

DiCarlo, A ;

Pescetelli, S ;

Paciotti, M ;

Lugli, P ;

Graf, M .

SOLID STATE COMMUNICATIONS, 1996, 98 (09) :803-806

[10]

DICARLO A, 1995, SEMICOND SCI TECH, V10, P1673, DOI 10.1088/0268-1242/10/12/018

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