標題: An incompressible state of a photo-excited electron gas
作者: Chepelianskii, Alexei D.
Watanabe, Masamitsu
Nasyedkin, Kostyantyn
Kono, Kimitoshi
Konstantinov, Denis
物理研究所
Institute of Physics
公開日期: 1-五月-2015
摘要: Two-dimensional electrons in a magnetic field can form new states of matter characterized by topological properties and strong electronic correlations as displayed in the integer and fractional quantum Hall states. In these states, the electron liquid displays several spectacular characteristics, which manifest themselves in transport experiments with the quantization of the Hall resistance and a vanishing longitudinal conductivity or in thermodynamic equilibrium when the electron fluid becomes incompressible. Several experiments have reported that dissipationless transport can be achieved even at weak, non-quantizing magnetic fields when the electrons absorb photons at specific energies related to their cyclotron frequency. Here we perform compressibility measurements on electrons on liquid helium demonstrating the formation of an incompressible electronic state under these resonant excitation conditions. This new state provides a striking example of irradiation-induced self-organization in a quantum system.
URI: http://dx.doi.org/10.1038/ncomms8210
http://hdl.handle.net/11536/124827
ISSN: 2041-1723
DOI: 10.1038/ncomms8210
期刊: NATURE COMMUNICATIONS
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