Crystal growth and magnetic properties of some quantum materials

Date

Dec 11, 2024

Time

1:00 PM - 2:00 PM

Speaker

Dr. Surjeet Singh

Affiliation

IFW Dresden

Language

en

Main Topic

Materialien

Host

Rita Taubert

Description

In this talk, I will provide an overview of the crystal growth activities on quantum materials in my lab at IISER Pune. Over the past five years, our research has focused on several contemporary topics, including quantum criticality in pyrochlore iridates, charge- and spin-stripe order in rare-earth nickelates, and magnetism in triangular lattice perovskites and rare-earth-based van der Waals halides. From these, I have selected three topics for a more detailed presentation: (a) RX₃ (R = rare-earth, X = Cl, I) [1, 2], which are structurally analogous to RuCl₃ and relatively unexplored. These materials are posited as proximate Kitaev systems, with YbCl₃ showing quantum critical Bose-Einstein condensation in the 2D limit [3]; (b) the triangular lattice compound Ca₃NiNb₂O₉, comprising well-isolated triangular layers of Ni (spin 1), which undergo a two-step antiferromagnetic ordering into a 120° ground state [4]; and (c) evidence of electron-phonon coupling in the charge-transfer insulator and van der Waals material NiPS₃ [5]. [1] Pistawala et al. Phys. Rev. B 110, 104421 (2024) [2] Pistawala et al. Phys. Rev. Materials 8, 076201 (2024) [3] Matsumoto et al. Nature Phys. 20, 1131 (2024) [4] Rout et al. Phys. Rev. Materials 7, 024419 (2023) [5] Pistawala et al. 2D Mater. 11 025035 (2024)

Links

• Seminars at the IFW

Last modified: Dec 11, 2024, 7:38:02 AM