Details

Autor(en) / Beteiligte

• Povarov, Kirill Yu
• Soldatov, Timofei A
• Wang, Ren-Bo
• Zheludev, Andrey
• Smirnov, Alexander I
• Starykh, Oleg A

Titel

Electron Spin Resonance of the Interacting Spinon Liquid

Ist Teil von

• Physical review letters, 2022-05, Vol.128 (18), p.187202-187202, Article 187202

Ort / Verlag

United States

Erscheinungsjahr

2022

Quelle

American Physical Society

Beschreibungen/Notizen

• We report experimental verification of the recently predicted collective modes of spinons, stabilized by backscattering interaction, in a model quantum spin chain material. We exploit the unique geometry of uniform Dzyaloshinskii-Moriya interactions in K_{2}CuSO_{4}Br_{2} to measure the interaction-induced splitting between the two components of the electron spin resonance (ESR) response doublet. From that we directly determine the magnitude of the "marginally irrelevant" backscattering interaction between spinons for the first time.