DPG Phi
Verhandlungen
Verhandlungen
DPG

Berlin 2024 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

TT: Fachverband Tiefe Temperaturen

TT 81: Frustrated Magnets: General II

TT 81.2: Vortrag

Donnerstag, 21. März 2024, 16:45–17:00, H 2053

Signatures of Domain-Wall Confinement in Raman Spectroscopy of Ising Spin Chains — •Stefan Birnkammer1,2, Johannes Knolle1,2,3, and Michael Knap1,21Technical University of Munich, TUM School of Natural Sciences, Physics Department, 85748 Garching, Germany — 2Munich Center for Quantum Science and Technology (MCQST), Schellingstr. 4, 80799 Munich, Germany — 3Blackett Laboratory, Imperial College London, London SW7 2AZ, United Kingdom

Mesonic bound states of domain walls can be stabilized in quasi one-dimensional magnetic compounds. Here, we theoretically study the Raman light scattering response of a twisted Kitaev chain with tilted magnetic fields as a minimal model for confinement in CoNb2O6. By both numerical matrix product states and few-domain wall variational states, we show that confinement-induced bound states directly manifest themselves as sharp peaks in the Raman response. Near quantum criticality the Raman spectrum exhibit the famous E8 symmetry. Remarkably, by tuning the polarization of the incident light field, we demonstrate that the Raman response offers new insights into the intrinsic structure of the bound state wavefunction.

Keywords: Raman Spectroscopy; Spinon Confinement; Ising Chains

100% | Mobil-Ansicht | English Version | Kontakt/Impressum/Datenschutz
DPG-Physik > DPG-Verhandlungen > 2024 > Berlin