Berlin 2015 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 71: Correlated Electrons: Poster Session

TT 71.30: Poster

Mittwoch, 18. März 2015, 15:00–18:00, Poster B

Insight in orbital resolution of lattice susceptibilities of strongly correlated electron systems — •Lewin Boehnke1, Alexander Lichtenstein2, Mikhail Katsnelson3, and Frank Lechermann21University of Fribourg, Switzerland — 2University of Hamburg, Germany — 3University Nijmegen, The Netherlands

Recent advances in the numerical ascertainment of lattice susceptibilities of strongly correlated electron systems [1] in a rigorous manner on a similar footing as the dynamical mean field theory (DMFT) allow to step out of the comfort zone of a single orbital approximation to realistic materials.

Outside this zone, new challenges and opportunities lie in the physical interpretation of these versatile quantities.

We show the wave-vector dependent variation of orbital resolution of the magnetic susceptibility of Sr2RuO4, culminating in unexpected lack thereof at its incommensurate peak as well as the intrinsically non-local order parameter of the hidden-order phase in LiVS2[2].

[1] Boehnke, Hafermann, Ferrero, Lechermann, Parcollet, PRB 84 (2011)

[2] Boehnke, Lichtenstein, Katsnelson, Lechermann, arXiv: 1407.4795 (2014)

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