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TT: Fachverband Tiefe Temperaturen

TT 47: Poster Session Correlated Electrons 2

TT 47.1: Poster

Mittwoch, 18. März 2020, 15:00–19:00, P2/3OG

DMRG study of a Kagome strip with two types of site spins — •Felix Liedeker¹, Nedko Ivanov^1,2, and Jürgen Schnack¹ — ¹Universität Bielefeld, Fakultät für Physik — ²Institute of Solid State Physics, Bulgarian Academy of Sciences

We study the quantum phase diagram and the low-lying excited states of a Heisenberg kagome strip containing two types of site spins and different exchange constants for the nearest-neighbor exchange bonds by means of the density matrix renormalization group (DMRG). Geometrically, this system is a cut out from the kagome lattice, so that a cluster of five spins repeats along the chain. In particular we study non-trivial phases apart from the standard ferromagnetic and ferrimagnetic phases.