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Berlin 2012 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 49: Correlated Electrons: Low-dimensional Systems - Materials 4

TT 49.6: Talk

Friday, March 30, 2012, 11:00–11:15, H 3005

Comparative study of spin orbit dominated iridates — •Mehmet Fatih Cetin1, Peter Lemmens1, Vladimir Gnezdilov2, Dirk Wulferding1, Tomohiro Takayama3, Kei Ohashi3, Hidenori Takagi3,4, Kwang-Yong Choi5, and Chengtian Lin61IPKM, TU-BS, Braunschweig, Germany — 2ILTPE NAS, Ukraine — 3AM, Univ. Tokyo, Japan — 4RIKEN, Japan — 5Dept. Phys., CA Univ., Seoul, Korea — 6MPI-FKF, Stuttgart, Germany

Raman spectroscopy is used to compare the effect of SOC on the excitation spectra in Sr2IrO4, Sr3Ir2O7, and Na4Ir3O8, which are reported to be spin liquids or anomalous Mott insulators. There is a decisive dynamics of the quasi particles and crossover phenomena related to an entanglement of electronic and lattice degrees of freedom. Work supported by DFG, B-IGSM and NTH School for Contacts in Nanosystems.

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