Intern
SFB 1170

Scheduled Events

Würzburg ToCoTronics Colloquium

"Chiral electrons in CoSi probed by X-rays"
Datum: 02.05.2024, 16:15 - 18:00 Uhr
Kategorie: Kolloquium
Ort: Hubland Süd, Geb. P1 (Physik), HSP P (Röntgen HS)
Veranstalter: SFB 1170 ToCoTronics
Vortragende: Hendrik Bentmann - NTNU Trondheim (Norwegen)

Chirality is a property of an object not identical to its mirror image. Electrons in chiral crystals and molecules are expected to acquire a chiral orbital motion, potentially allowing for sizable orbital Hall and orbital magnetoelectric effects. I will present experimental evidence for chirality-driven electron orbital motion in a chiral crystal, CoSi, based on soft X-ray photoelectron spectroscopy with circularly polarized X-rays [1]. Observation of strongly handedness-dependent circular dichroism shows the formation of an orbital-angular-momentum texture with chiral orbital-momentum locking. In the context of these results, I will conclude with a brief outlook on future prospects of dichroic and spin-resolving photoemission as a probe of symmetry-broken states through combining real and reciprocal space imaging. 

[1] Stefanie S. Brinkman et al., arXiv:2404.02952 (to be published in Phys. Rev. Lett.)

Zurück