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Open Access item Exciton Gas Compression and Metallic Condensation in a Single Semiconductor Quantum Wire

Authors:Alén, Benito
Fuster, David
Muñoz-Matutano, G.
Martínez-Pastor, Juan
González, Yolanda
Canet-Ferrer, J.
González, Luisa
Keywords:InAs/InP quantum wires, Semiconductor nanostructures, Microphotoluminiscence
Issue Date:8-Aug-2008
Publisher:American Physical Society
Citation:Physics Review Letters 101(6): 067405 (2008)
Abstract: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 nc~1×105 cm-1 and Tc~35 K, respectively.
Description:4 páginas, 5 figuras.-- PACS numbers: 78.67.Lt, 71.30.+h, 71.35. -y.-- Comunicación presentada a la International Conference on the Physics of Semiconductors (ICPS) celebrada en Rio de Jqaneiro (Brasil/2008).
Publisher version (URL):http://link.aps.org
Appears in Collections:(IMM-CNM) Artículos

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