Berlin 2012 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 45: Correlated Electrons: Poster Session

TT 45.61: Poster

Donnerstag, 29. März 2012, 15:00–19:00, Poster B

Atomically resolved images of lithium purple bronze — •Melanie Klinke¹, Robert Bienert¹, Michael Waelsch¹, Tatjana Podlich¹, Rongying Jin², and René Matzdorf¹ — ¹Experimentalphysik II, Universität Kassel, Deutschland — ²Department of Physics and Astronomy, Lousiana State University, USA

The lithium molybdenum purple bronze Li_0.9Mo₆O₁₇ is a quasi 1D metal at room temperature showing Luttinger liquid physics. The highly anisotropic conductivity runs along the crystallographic b axis where Mo-O chains, formed by the shared edges of the MoO₆ octahedra, provide the electrical transport. Li_0.9Mo₆O₁₇ samples were investigated with low-temperature scanning tunneling microscopy and spectroscopy. By cleaving the samples at low temperatures (60 K) we obtained atomically resolved images of the surface. In these images the Mo-O chains are visible, which are covered by layers of MoO₆ octahedra and MoO₄ tetrahedra.