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Condensed Matter Physics in the Alps: Geometric Frustration, Topology, Flat Bands, and Correlation in Kagome and Van der Waals Systems

4–9 Jan 2026
Saas Fee
Europe/Zurich timezone

Condensed Matter Physics in the Alps

Session

Wednesday Coffee Break & Poster

7 Jan 2026, 09:45
Saas Fee

Saas Fee

Conference center Steinmatte

Presentation materials

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  1. 24. Buckling of NbSe2 thin films
    Nicolas Brunner (University of Fribourg)
    07/01/2026, 09:45
    van der Waals experimental
    Poster

    Thin films under strain and with low interfacial adhesion are known to buckle and delaminate from their substrates [1,2]. While buckling has previously been reported in MoS₂ films grown on x-cut SiO₂, there are few reports of this phenomenon in other TMDCs or in films only a few tens of nanometers thick. Here, we present the first observation of buckling in MBE-grown NbSe₂ thin films (10–15...

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  2. 57. Charge-density-wave quantum critical point in 2H-TaSe2
    Frank Weber (Karlsruhe Institute of Technology)
    07/01/2026, 09:45
    van der Waals experimental
    Poster

    Superconductivity often emerges as a dome around a quantum critical point (QCP) where long- range order is suppressed to zero temperature, e.g., in high-temperature superconductors. However, the presence of a putative charge-density-wave (CDW) QCP and its impact on emerging superconductivity received increased scientific attention only after the discovery of CDW order in copper oxides. By now,...

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  3. 23. Investigating magnetism in 1T-NbSe2
    Ryan Thompson (University of Fribourg)
    07/01/2026, 09:45
    van der Waals experimental
    Poster

    NbSe$_2$ is a transition metal dichalcogenide (TMDC) well known for having the highest superconducting transition temperature among all pristine TMDCs. While bulk NbSe$_2$ is only found in its 2H superconducting phase, it has been shown that 1T-NbSe$_2$ can be stabilized on a substrate through molecular beam epitaxy growth, with extremely different properties from the 2H phase. 1T-NbSe$_2$ is...

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  4. 36. Probing the magnetic order in a few-layer CrPS₄
    Katharina Kress (Department of Physics, University of Basel, Basel, Switzerland)
    07/01/2026, 09:45
    van der Waals experimental
    Poster

    Understanding magnetism in two-dimensional (2D) van der Waals (vdW) magnets requires nanoscale local probes. Scanning SQUID microscopy (SSM), with ~100 nm resolution, enables direct imaging of magnetic structures in mono- and few-layer materials. Using SSM, we investigate the magnetic behavior of CrPS₄, a weakly anisotropic vdW interlayer antiferromagnet. Monolayer CrPS₄ shows no remanence and...

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