Future of Emerging Novel Quantum Phases in Frustrated Magnets - an Estonian-Japanese perspective

Abstract

This report reviews my research activities conducted while present and working as Distinguished Visiting Professor at the Solid State Physics and Chemistry (SSPC) Laboratory in the Division of Chemistry financed by the International Research Unit of Advanced Future Studies at Kyoto University. The key interest of my research is on emerging novel quantum phases and quantum critical phenomena in strongly frustrated quantum magnets, especially in low dimensional metal oxides and intermetallic compounds. Thereby, two classes of materials are in the focus of my present work. Firstly, studies of low-dimensional oxide materials in vicinity of magnetic field induced quantum critical points, the origin of the magnetic frustration with nearly and weakly ferromagnetic compounds, and the characterization of their spin-fluctuation features. The second focus is on cerium and ytterbium based metals with electronic ground state instabilities being related to the mechanisms of Kondo- and/or valence fluctuation effects. As a related activity, we are also working on improvements in various classes of permanent magnet materials. Finally, some future collaboration plans of the SSPC Laboratory with several of my collaborators at the National Institute of Chemical Physics and Biophysics (NICPB/KBFI) in Estonia are outlined: doped magnetism in nonmagnetic oxides, atomic layer deposition of simpler and more complex oxides and metals, development of magnetic nanoparticle agents for medical uses, targeting also interdisciplinary projects between Japan and Estonia bilaterally and with additional contributing partners.