Study of emergent quantum phenomena of MPS3 under pressures


  • Takahiro Matsuoka Joint Institute for Advanced Materials, University of Tennessee Knoxville, USA


The transition metal thiophosphates MPS3 (M = V, Mn, Fe, Co, Ni, and Cd) compounds form a family of quasi-two-dimensional (2D) van der Waals compounds. The MPS3 family offers an enticing materials platform to study novel magnetic phenomena in low-dimensional systems and the promise for applications in spintronic devices because they can be exfoliated down to thin films. Recently, we have studied the insulator-to-metal transition and crystal structure evolution under high pressure in NiPS3 and CoPS3 through in-situ electrical resistance, Hall resistance, magnetoresistance, X-ray diffraction, and Raman scattering measurements. NiPS3 transforms from C2/mP3̅ → Pm1 → P3m1 up to 23 GPa. The established phase diagram of MPS3 that metallizes under pressure, summarising the current and previous experimental studies, reveals that the electronic configurations at ambient pressure strongly influence the structural and electronic properties of MPS3 at high pressures, making this series of compounds suitable platforms for exploring new physical properties under compression.

About the Speaker

Takahiro Matsuoka, Joint Institute for Advanced Materials, University of Tennessee Knoxville, USA

Takahiro Matsuoka is a postdoctoral researcher at the Joint Institute for Advanced Materials, University of Tennessee Knoxville where is he is a member of the Mandrus Research Group since 2018. He earned his Ph.D. from Osaka University in 2008. His dissertation involves elemental lithium's pressure-induced metal-to-semiconductor transition and the crystal structure transformations under high pressures. He studied those phenomena by electrical resistance, optical reflectance, and X-ray diffraction measurements using diamond-anvil cells. From 2008−2009, Dr. Matsuoka held postdoctoral research positions at Osaka University (Extreme High-Pressure Group) and worked as a postdoctoral associate at Japan Synchrotron Radiation Research Institute/SPring-8 (Powder-Diffraction beamline under extreme compression) from 2009−2011. He also held positions as Assistant Professor at Osaka University from 2011−2013 and Gifu University from 2013−2016, and as Associate Professor at Gifu University from 2016−2018. His research focuses on the new electronic states, such as superconductivity, thermoelectricity, magnetoresistivity, heavy fermion behavior, that emerge in Weyl semimetals, topological materials, and layered compounds.



Article ID



Invited Presentations



How to Cite

T Matsuoka, Study of emergent quantum phenomena of MPS3 under pressures, Proceedings of the Samahang Pisika ng Pilipinas 41, SPP-2023-INV-1F-01 (2023). URL: