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TT: Fachverband Tiefe Temperaturen
TT 87: Frustrated Magnets: Spin Liquids
TT 87.12: Vortrag
Freitag, 22. März 2024, 12:30–12:45, H 3010
Higher-Order Susceptibilities in Extended Kitaev Models Computed Via Krylov-Space Based Methods — •Marius Möller1, David Kaib1, Wolfram Brenig2, and Roser Valentí1 — 1Institute for Theoretical Physics, Goethe University Frankfurt, Max-von-Laue-Strasse 1, 60438 Frankfurt am Main, Germany — 2Institute for Theoretical Physics, Technical University Braunschweig, 38106 Braunschweig, Germany
Higher Harmonic Generation phenomena and the underlying susceptibilities were recently proposed to potentially provide new insights into fractionalized excitations by showing clearer signatures than the rather featureless continua appearing in linear response. We investigate the possibility of calculating the higher order susceptibilities numerically from Exact Diagonalization Techniques, proposing a Krylov-space based algorithm applicable to various lattice models.
M.M., D.K. and R.V. gratefully acknowledge funding by the DFG (German Research Foundation): TRR 288 − 422213477.
Keywords: Non-linear; Susceptibility; Lanczos; Krylov; Higher Order