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TT: Fachverband Tiefe Temperaturen

TT 72: Poster Session: Correlated Electrons

TT 72.88: Poster

Wednesday, March 14, 2018, 15:00–19:00, Poster B

Analytical Evidences for Particle Induced Doublons in Strongly Correlated Systems — •Maximilian Rodriguez Rasmussen, Karsten Balzer, Niclas Schlünzen, and Michael Bonitz — CAU Kiel, Germany

Under certain conditions strongly correlated fermions in lattice systems are known to form doublons – quasi-particles consisting of two electrons on the same site. Due to the interesting resulting electronic properties doublon formation processes have been the subject of various studies. Recently, a new mechanism has been proposed^[1] – doublon creation by the impact of energetic ions. Here, these processes are described and verified by analytical results for a two-site model that is shown to capture the basic features and allows for a systematic analysis of the main trends^[2]. The findings are additionally supported by a Landau–Zener description of the doublon state.

[1] K. Balzer, M. Rasmussen, N. Schlünzen, and M. Bonitz, submitted for publication (2017)

[2] M. Rasmussen, "Particle Induced Doublons in Strongly Correlated Systems", bachelor thesis (2017)