Dresden 2020 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 65: Poster Session Topological Topics

TT 65.27: Poster

Thursday, March 19, 2020, 15:00–19:00, P2/EG

Three-dimensional quantum Hall effect and thermopower in ZrTe₅ — •Toni Ehmcke and Tobias Meng — Institute of Theoretical Physics, Technische Universität Dresden, 01069 Dresden, Germany

Motivated by recent, unpublished experiments, we model electric and thermoelectric transport coefficients in ZrTe₅, a promising candidate material to realize the three-dimensional analogue of the quantum Hall effect due to its weakly coupled layer structure. Using a low-energy continuum model, we apply linear response theory to investigate the magnetic-field dependence of the longitudinal and Hall conductivities as well as the thermoelectric Seebeck and Nernst coefficients. We compare the results for different experimentally relevant situations and find good agreement with the experimental data.