Exciton gas compression and metallic condensation in a single semiconductor quantum wire

被引：22

作者：

Alen, B. ^{[1
]}

Fuster, D. ^{[1
]}

Munoz-Matutano, G. ^{[2
]}

Martinez-Pastor, J. ^{[2
]}

Gonzalez, Y. ^{[1
]}

Canet-Ferrer, J. ^{[2
]}

Gonzalez, L. ^{[1
]}

机构：

[1] CSIC, Inst Microelect Madrid, CNM, Madrid 28760, Spain

[2] Univ Valencia, Inst Ciencia Mat, ICMUV, Valencia 46071, Spain

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.101.067405

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the metal-insulator transition in individual self-assembled quantum wires and report optical evidence of metallic liquid condensation at low temperatures. First, we observe that the temperature and power dependence of the single nanowire photoluminescence follow the evolution expected for an electron-hole liquid in one dimension. Second, we find novel spectral features that suggest that in this situation the expanding liquid condensate compresses the exciton gas in real space. Finally, we estimate the critical density and critical temperature of the phase transition diagram at n(c) similar to 1 x 10(5) cm(-1) and T-c similar to 35 K, respectively.

引用

收藏

页数：4

相关论文

共 24 条

[1] InAs/InP single quantum wire formation and emission at 1.5 μm [J].

Alen, B. ;

Fuster, D. ;

Gonzalez, Y. ;

Gonzalez, L. ;

Martinez-Pastor, J. .

APPLIED PHYSICS LETTERS, 2006, 89 (23)

[2] Optical transitions and excitonic recombination in InAs/InP self-assembled quantum wires [J].

Alén, B ;

Martínez-Pastor, J ;

García-Cristobal, A ;

González, L ;

García, JM .

APPLIED PHYSICS LETTERS, 2001, 78 (25) :4025-4027

[3] Coulomb correlation and band gap renormalization at high carrier densities in quantum wires [J].

Ambigapathy, R ;

BarJoseph, I ;

Oberli, DY ;

Haacke, S ;

Brasil, MJ ;

Reinhardt, F ;

Kapon, E ;

Deveaud, B .

PHYSICAL REVIEW LETTERS, 1997, 78 (18) :3579-3582

[4] Instability toward biexciton crystallization in one-dimensional electron-hole systems [J].

Asano, K ;

Ogawa, T .

JOURNAL OF LUMINESCENCE, 2005, 112 (1-4) :200-203

[5] LARGE OPTICAL SINGULARITIES OF THE ONE-DIMENSIONAL ELECTRON-GAS IN SEMICONDUCTOR QUANTUM WIRES [J].

CALLEJA, JM ;

GONI, AR ;

DENNIS, BS ;

WEINER, JS ;

PINCZUK, A ;

SCHMITTRINK, S ;

PFEIFFER, LN ;

WEST, KW ;

MULLER, JF ;

RUCKENSTEIN, AE .

SOLID STATE COMMUNICATIONS, 1991, 79 (11) :911-915

[6] QUANTUM CONFINED ONE-DIMENSIONAL ELECTRON-HOLE PLASMA IN SEMICONDUCTOR QUANTUM WIRES [J].

CINGOLANI, R ;

LAGE, H ;

TAPFER, L ;

KALT, H ;

HEITMANN, D ;

PLOOG, K .

PHYSICAL REVIEW LETTERS, 1991, 67 (07) :891-894

[7] Many-body renormalization of semiconductor quantum wire excitons: Absorption, gain, binding, and unbinding [J].

Das Sarma, S ;

Wang, DW .

PHYSICAL REVIEW LETTERS, 2000, 84 (09) :2010-2013

[8] METAL-NON-METAL TRANSITION IN HETEROSTRUCTURES WITH THICK SPACER LAYERS [J].

EFROS, AL .

SOLID STATE COMMUNICATIONS, 1989, 70 (03) :253-256

[9] Photoluminescence and radiative lifetime of trions in GaAs quantum wells [J].

Esser, A ;

Runge, E ;

Zimmermann, R ;

Langbein, W .

PHYSICAL REVIEW B, 2000, 62 (12) :8232-8239

[10] Isolated self-assembled InAs/InP(001) quantum wires obtained by controlling the growth front evolution [J].

Fuster, David ;

Alen, Benito ;

Gonzalez, Luisa ;

Gonzalez, Yolanda ;

Martinez-Pastor, Juan ;

Gonzalez, Maria Ujue ;

Garcia, Jorge M. .

NANOTECHNOLOGY, 2007, 18 (03)