7-10 September 2020
Europe/Zurich timezone
20. konference českých a slovenských fyziků

Advanced scanning probe microscopy of low-dimensional molecular systems revealing exotic quantum states

10 Sep 2020, 10:30
35m
lecture hall T1 (building A)

lecture hall T1

building A

Speaker

Jelínek P. (Institute of Physics of Czech Academy of Sciences, Prague)

Description

Low dimensional materials offer very interesting material and physical properties due to
reduced dimensionality. At present, 2D materials are the focus of attention. However, 1D
systems often show far more exotic features, such as Tomanaga-Luttinger liquid, Peierls
distortion, etc.. In this talk, we will present -conjugated molecular chains of distinct
topological classes formed on metallic surfaces by on-surface synthesis, which physical
properties were investigated by low temperature UHV scanning probe microscopy supported
by theoretical analysis. We will reveal fundamental connection between topological phase
transition and the level crossing driving a variation of the -conjugation of polymers [1]. The
proximity of the quantum phase transition, in principle, allows us to design intrinsically
conductive polymers despite of the Peierls distortion.
[1] B. Cierra et al. Nature Nanotechnology. (2020). DOI: 10.1038/s41565-020-0668-7

Primary author

Jelínek P. (Institute of Physics of Czech Academy of Sciences, Prague)

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