Conductance anomalies in strained quantum wires: The case of PbSe and PbTe

被引：6

作者：

Grabecki, G

Wrobel, J

Dietl, T

Sawicki, M

Domagala, J

Skoskiewicz, T

Papis, E

Kaminska, E

Piotrowska, A

Leszczynski, M

Ueta, Y

Sprinholtz, G

Bauer, G

机构：

[1] POLISH ACAD SCI,INST ELECTRON TECHNOL,PL-02668 WARSAW,POLAND

[2] POLISH ACAD SCI,HIGH PRESSURE RES CTR,PL-02668 WARSAW,POLAND

[3] UNIV LINZ,INST HALBLEITERPHYS,A-4040 LINZ,AUSTRIA

来源：

SUPERLATTICES AND MICROSTRUCTURES | 1997年 / 22卷 / 01期

关键词：

PbSe/BaF2; PbTe/BaF2; quantum wires; strain; mesoscopic phenomena;

D O I：

10.1006/spmi.1996.0284

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We show that conducting edge channels are formed in free standing wires of PbSe/BaF2 and PbTe/BaF2 as the temperature is lowered. We interpret the effect as a result of spatially inhomogeneous strain caused by a difference between the thermal expansion coefficients of the epilayer and the substrate. The presence of these edge channels can explain anomalous mesoscopic effects observed previously in these wires. Theoretical calculations based on the stress maps obtained by Jain et al. for narrow epitaxial stripes seem to support the experimental observations. (C) 1997 Academic Press Limited.

引用

页码：51 / 55

页数：5

共 14 条

[1]

ALTSHULER BL, 1986, ZH EKSP TEOR FIZ+, V91, P220

[2]

[Anonymous], SEMICONDUCTING LEAD

[3] ELASTIC LATTICE DEFORMATION IN QUANTUM-WIRE HETEROSTRUCTURES [J].

DECARO, L ;

TAPFER, L .

PHYSICAL REVIEW B, 1994, 49 (16) :11127-11133

[4]

FANTNER EJ, 1983, ADV XRAY ANAL, V27, P171

[5] MESOSCOPIC PHENOMENA IN MICROSTRUCTURES OF IV-VI EPILAYERS [J].

GRABECKI, G ;

TAKEYAMA, S ;

ADACHI, S ;

TAKAGI, Y ;

DIETL, T ;

KAMINSKA, E ;

PIOTROWSKA, A ;

PAPIS, E ;

FRANK, N ;

BAUER, G .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 1995, 34 (8B) :4433-4435

[6]

GRABECKI G, IN PRESS

[7]

HU SM, 1979, J APPL PHYS, V50, P4661, DOI 10.1063/1.326575

[8] EDGE-INDUCED STRESS AND STRAIN IN STRIPE FILMS AND SUBSTRATES - A 2-DIMENSIONAL FINITE-ELEMENT CALCULATION [J].

JAIN, SC ;

HARKER, AH ;

ATKINSON, A ;

PINARDI, K .

JOURNAL OF APPLIED PHYSICS, 1995, 78 (03) :1630-1637

[9] Stresses and strains in epilayers, stripes and quantum structures of III-V compound semiconductors [J].

Jain, SC ;

Willander, M ;

Maes, H .

SEMICONDUCTOR SCIENCE AND TECHNOLOGY, 1996, 11 (05) :641-671

[10] UNIVERSAL CONDUCTANCE FLUCTUATIONS IN METALS - EFFECTS OF FINITE TEMPERATURE, INTERACTIONS, AND MAGNETIC-FIELD [J].

LEE, PA ;

STONE, AD ;

FUKUYAMA, H .

PHYSICAL REVIEW B, 1987, 35 (03) :1039-1070

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