Gorshunov, Boris P.Volkov, AlexanderKozlov, Gennadij V.Degiorgi, LeonardoBlank, A.Csiba, T.Dressel, MartinKim, YongSchwartz, A.Grüner, George2009-09-042016-03-312009-09-042016-03-311994316446904http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-46269http://elib.uni-stuttgart.de/handle/11682/7058http://dx.doi.org/10.18419/opus-7041The dynamic conductivity has been measured in K0.3MnO3 single crystals in the conducting phase (above 180 K), for the first time over a broad frequency range 1-105 cm-1, using a combination of different spectroscopic techniques. Together with a pseudogap, clearly pronounced excitations are observed below 50 cm-1 for E||b, the direction along which the charge density wave develops. We associate these excitations with charge-density-wave fluctuations which exist even at room temperature and give a collective contribution to the conductivity. For the transverse polarization, E|b, a usual single-particle Drude behavior of the conductivity is observed.eninfo:eu-repo/semantics/openAccessEinkristall , Leitfähigkeit530article2010-01-26