Kaushick K. Parui
Scientific Employee & Ph.D. Student
Chair of Neutron Spectroscopy of Condensed Matter
Since June 2022, my research has focused on frustrated magnetism and correlated proton disorder in copper-hydroxy sulfate minerals and hydroxide perovskites. I combine sample synthesis with a broad experimental toolkit—neutron and X-ray scattering, magnetometry, and specific-heat measurements—to investigate how structural disorder and geometric frustration give rise to unconventional magnetic ground states, including spin-liquid-like behaviour.
Research Interests
- Frustrated magnetism in copper-hydroxy sulfate minerals
- Correlated proton disorder and frustrated magnetism in hydroxide perovskites
- Neutron spectroscopy and crystal growth of quantum magnetic materials
- Magnetism, solid state physics, and crystallography
Methods & Techniques
My work integrates materials synthesis with a range of complementary characterization methods:
- Synthesis — hydrothermal and solution-based growth of magnetic mineral analogues and quantum materials, including deuterated samples for neutron work.
- Neutron Scattering — neutrons reveal both the atomic positions and the magnetic structure of a material, and because unpaired electrons produce a distinct magnetic scattering cross-section, neutrons are the key tool for distinguishing magnetic order from nuclear structure.
- X-ray Scattering / Diffraction — for phase identification, structural refinement, often used complementarily with neutron scattering.
- Magnetometry — bulk magnetic characterization to map susceptibility and magnetic phase behaviour, a standard complement to neutron and X-ray probes in magnetic materials research.
- Specific Heat — thermodynamic measurements to identify phase transitions and characterize magnetic ground states.
Publications
- Disorder-driven magnetic duality in the spin-½ system ktenasite, Cu₂.₇Zn₂.₃(SO₄)₂(OH)₆·6H₂O, Phys. Rev. B 113, 094416 (2025).
- Spin liquid mimicry in the hydroxide double perovskite CuSn(OD)₆ induced by correlated proton disorder, Phys. Rev. B 112, L100403 (2025).
- Disordered ground state in the three-dimensional face-centered frustrated spin-5/2 system MnSn(OH)₆, Phys. Rev. B 112, 054421 (2025).
- Stacking disorder in novel ABAC-stacked brochantite, Cu₄SO₄(OH)₆, Phys. Rev. Materials 9, 054407 (2025).
- Correlated proton disorder in the crystal structure of the double hydroxide perovskite CuSn(OH)₆, Phys. Rev. Materials 9, 033603 (2025).
- Magnetic Phase Diagram of Rouaite, Cu₂(OH)₃NO₃, Phys. Rev. B 110, 054442 (2024).
Contact
Recknagel-Bau (REC), D211,
Haeckelstraße 3,
01069 Dresden,
Germany
Tel.: +49 351 463 33370