Phys. Rev. B 81, 153414 (2010) [4 pages]Two-dimensional electron liquid state at LaAlO3-SrTiO3 interfacesReceived 28 January 2010; revised 11 March 2010; published 30 April 2010 Using tunneling spectroscopy we have measured the spectral density of states of the mobile, two-dimensional electron system generated at the LaAlO3-SrTiO3 interface. As shown by the density of states the interface electron system differs qualitatively, first, from the electron systems of the materials defining the interface and, second, from the two-dimensional electron gases formed at interfaces between conventional semiconductors. © 2010 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.81.153414
DOI:
10.1103/PhysRevB.81.153414
PACS:
73.20.-r, 73.40.Gk, 71.15.Mb
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