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

Abstract

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 $n_c\sim 1\times 10^5$ cm${}^{-1}$ and $T_c\sim 35$ K, respectively.

4 pages, 5 figures

References in corpus (6)

• Many-Body Renormalization of Semiconductor Quantum Wire Excitons: Absorption, Gain, Binding, Unbinding, and Mott Transition
• Local disorder and optical properties in V-shaped quantum wires : towards one-dimensional exciton systems
• Many-body Effects on Excitonic Optical Properties of Photoexcited Semiconductor Quantum Wire Structures
• Stability of negative and positive trions in quantum wires
• Instability toward biexciton crystallization in one-dimensional electron-hole systems
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Cited by in corpus (4)

• Controlling the charge environment of single quantum dots in a photonic-crystal cavity
• Relative stability of excitonic complexes in quasi-one-dimensional semiconductors
• Configuration space method for calculating binding energies of exciton complexes in quasi-1D/2D semiconductors
• Electrical control of a laterally ordered InAs/InP quantum dash array