[staff-physics-and-astronomy-HL-UHD-UD] Reminder - IoP Colloquium - 16:00-17:00 13/04/2023 - D1.111 SP 904 - Prof. Phillip Moll (Max Planck Institute for Structure and Dynamics of Matter)

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From: Secretariat IoP-UvA <secr-iop-science at uva.nl>
Sent: dinsdag 11 april 2023 09:57
To: all-iop <all-iop at uva.nl>; 'grappa-all at list.uva.nl' (grappa-all at list.uva.nl) <grappa-all at list.uva.nl>; colloquium at nikhef.nl; 'P.Rodriguez at amolf.nl' <P.Rodriguez at amolf.nl>; Beta NAT Secretariaat <natsecr.beta at vu.nl>
Subject: Reminder - IoP Colloquium - 16:00-17:00 13/04/2023 - D1.111 SP 904 - Prof. Phillip Moll (Max Planck Institute for Structure and Dynamics of Matter)

Dear everyone,


You are cordially invited to the IoP Colloquium on Thursday, 13 April 2023 given by prof. Phillip Moll of Max Planck Institute for Structure and Dynamics of Matter.



Please see the details below:

  *   Date: 13-04-2023
  *   Time: 16:00-17:00
  *   Location: Science Park 904
  *   Room: D1.111
Title: The unusual electron transport in metallic Kagome nets
Abstract:
Materials that can host different states of electronic order form a recurring theme in physics and materials science, and they are of particular interest if they are coupled strongly. A famous example are ferroelectrics, in which electric polarization and magnetism not only coexist but are strongly linked. This both unveils a rich physics of correlated states, and also opens unexpected application avenues as the coupling promises to manipulate one state by a stimulus that primarily acts on another - say switching magnetism using electric fields.
Recently, materials based on the structural motif of the Kagome web have attracted significant attention for their tendency to host such strongly coupled phases. In particular, the centro-symmetric layered Kagome metal (K,Cs)V3Sb5 have entered the focus of experimental and theoretical research. They host a charge-density-wave type transition at elevated temperatures ~100K, followed by a superconducting transition at 3K (exact values depend on composition). Yet there is another type of electronic order which thus far eludes exact microscopic identification. A series of experimental probes detects the onset of anomalous behavior around T'~30-40K, including thermal Hall, mSR, NMR, magnetic torque, Kerr rotation. The anomalous low-temperature state carries the characteristics of a chiral, nematic and time-reversal-symmetry breaking fluid (all of which are under most active debate currently).
Yet what crystallizes out of the current state of experimental data is a highly entangled system which is extraordinarily responsive to external perturbations. This materials main strength is equally its weakness, the unusual degree of coupling between states can hinder its systematic investigation. However, it is already clear that it provides a platform to explore strongly coupled correlated phases, and as a result it displays a thus-far unknown electromagnetic response, a diode in which the forward direction can be switched by the application of a magnetic field. I will review the current state of the field, and discuss published and ongoing projects in my department.
[1] C. Guo et al., Nature 611, 461-466 (2022)
[2] X. Huang et al., PRB 106, 064510 (2022)

All information can be found on the IoP website: https://iop.uva.nl/content/events/2023/04/colloquium-dima-abanin-copy-2.html?origin=YDX0oCAuRaWl9bnbtYhB4g

If you have any further questions, please contact dr. Arghavan Safavi Naini a.safavinaini at uva.nl<mailto:a.safavinaini at uva.nl> and dr. Rene Gerritsma R.Gerritsma at uva.nl<mailto:R.Gerritsma at uva.nl>


Best regards,

Secretariat Institute of Physics

E: secr-iop-science at uva.nl<mailto:secr-iop-science at uva.nl>
R: C4.261a SP904
T: 020 525 5773

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Universiteit van Amsterdam
Institute of Physics (IoP), FNWI
Postbus 94485 | 1090 GL Amsterdam
Science Park 904 | 1098 XH Amsterdam




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