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

Autor:	Alen, Benito, Fuster, David, Munoz-Matutano, Guillermo, Martinez-Pastor, Juan, Gonzalez, Yolanda, Gonzalez, Luisa
Rok vydání:	2008
Předmět:	Condensed Matter - Strongly Correlated Electrons Condensed Matter - Mesoscale and Nanoscale Physics
Zdroj:	Phys. Rev. Lett. 101, 067405 (2008)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevLett.101.067405
Popis:	We study the metal-insulator transition in individual self-assembled quantum wires and report optical evidences of metallic liquid condensation at low temperatures. Firstly, 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. Secondly, 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 $n_c\sim1\times10^5$ cm$^{-1}$ and $T_c\sim35$ K, respectively. Comment: 4 pages, 5 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0801.4788 Zobrazit plný text záznamu View this record from Arxiv