5 papers
A microscopic design rule for spin supersolids in triangular-lattice magnets
Ryota Ono, Jun'ichi Ieda, Michiyasu Mori +1
Spin supersolids emerge as a central topic in frustrated magnetism, motivating the search for realization in quantum materials. To this end, we study the origin of exchange anisotr…
Finite temperature magnetic interactions from first principles
Ravi Kaushik, Ryota Ono, Sergey Artyukhin
Density functional theory has demonstrated remarkable predictive power in calculating magnetic properties at zero temperature. At finite temperatures, thermally excited phonons may…
Entangled orbital, spin, and ferroelectric orders in -electron magnet CsO
Ryota Ono, Ravi Kaushik, Sergey Artyukhin +3
Alkali superoxides differ from conventional transition metal magnets, exhibit magnetism from partially occupied oxygen molecular -orbitals. Among them, CsO stands out for…
Multiferroic kinks and spin-flop transition in NiInSbO from first principles
Ryota Ono, Igor Solovyev, Sergey Artyukhin
Magnetoelectric multiferroics are key materials for next-generation spintronic devices due to their entangled magnetic and ferroelectric properties. Spiral multiferroics possess fe…
Ferromagnetic ferroelectricity due to the Kugel-Khomskii mechanism of the orbital ordering assisted by atomic Hund's second rule effects
I. V. Solovyev, R. Ono, S. A. Nikolaev
The exchange interactions in insulators depend on the orbital state of magnetic ions, obeying certain phenomenological principles, known as Goodenough-Kanamori-Anderson rules. Part…