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Título : Exciton Gas Compression and Metallic Condensation in a Single Semiconductor Quantum Wire
Autor : Alén, Benito, Fuster, David, Muñoz-Matutano, G., Martínez-Pastor, Juan, González Díez, Yolanda, Canet-Ferrer, J., González Sotos, Luisa
Palabras clave : InAs/InP quantum wires
Semiconductor nanostructures
Fecha de publicación : 8-Aug-2008
Editor: American Physical Society
Resumen: 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.
Descripción : 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).
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ISSN: 0031-9007
DOI: 10.1103/PhysRevLett.101.067405
Citación : Physics Review Letters 101(6): 067405 (2008)
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