DPG Phi
Verhandlungen
Verhandlungen
DPG

Regensburg 2022 – scientific programme

Parts | Days | Selection | Search | Updates | Downloads | Help

MA: Fachverband Magnetismus

MA 9: INNOMAG e.V. Prizes 2022 (Diplom-/Master and Ph.D. Thesis)

MA 9.1: Talk

Monday, September 5, 2022, 15:00–15:20, H43

Magnetoelastic coupling and uniaxial pressure dependencies in the honeycomb quantum magnets CrI3 and Na2Co2TeO6 — •Jan Arneth1, Martin Jonak1, Mahmoud Abdel-Hafiez2, Kwang-Yong Choi3, and Rüdiger Klingeler11Kirchhoff-Institute for Physics, Heidelberg University, Germany — 2Dep. of Physics and Astronomy, Uppsala University, Sweden — 3Dep. of Physics, Sungkyunkwan University, Republic of Korea

Due to their layered structure, competing magnetic interactions, and magnetic anisotropy, quasi-2D honeycomb systems are promising quantum materials featuring fundamentally and technologically relevant phenomena. Often, relevant materials are at the verge of the desired properties, and strain has been proven to be a tuning parameter. Strain engineering of the critical temperature in 2D ferromagnetic semiconductors such as CrI3 [1] towards room temperature or driving the quantum magnet Na2Co2TeO6 into the Kitaev spin-liquid phase are illustrative examples. The precise determination of uniaxial strain effects is hence a mandatory step towards new applications and phenomena. We report dilatometric studies on the honeycomb quantum magnets CrI3 and Na2Co2TeO6 at low temperatures and high magnetic fields. Our data enable us to quantify magnetoelastic coupling and the uniaxial pressure dependencies of the respective ordering temperatures. Additionally, the magnetic phase diagrams are constructed, including structural response of the surface phase in CrI3 and signatures of competing degrees of freedom in Na2Co2TeO6.

[1] J. Arneth et al., Phys. Rev. B 105, L060404 (2022)

100% | Mobile Layout | Deutsche Version | Contact/Imprint/Privacy
DPG-Physik > DPG-Verhandlungen > 2022 > Regensburg