In the past decade, resonant inelastic x-ray scattering (RIXS) has made remarkable progress
as a spectroscopic technique. This is a direct result of the availability of high-brilliance …

In quantum materials, degeneracies and frustrated interactions can have a profound impact
on the emergence of long-range order, often driving strong fluctuations that suppress …

We study the interplay of crystal field splitting and Hund coupling in a two-orbital model
which captures the essential physics of systems with two electrons or holes in the eg shell …

Photo-excitation can drive strongly correlated electron insulators into competing conducting
phases,, resulting in giant and ultrafast changes of their electronic and magnetic properties …

High-resolution resonant inelastic x-ray scattering has been used to determine the
momentum dependence of orbital excitations in Mott-insulating LaTiO 3 and YTiO 3 over a …

We show how the general and basic asymmetry between two fundamental degrees of
freedom present in strongly correlated oxides, spin and orbital, has very profound …

Controlling the interplay between localized spins and itinerant electrons at the oxide
interfaces can lead to exotic magnetic states. Here we devise SrTiO 3/LaTiO 3/SrTiO 3 …

Progress in describing thermodynamic phase transitions in quantum systems is obtained by
noticing that the Gibbs operator e− β H for a two-dimensional (2D) lattice system with a …

In the Mott-Hubbard insulators YTiO 3 and SmTiO 3 we study optical excitations from the
lower to the upper Hubbard band,| d 1 d 1⟩→| d 0 d 2⟩. The multipeak structure observed in …

Coupling of orbital degree of freedom with a spin exchange, ie, Kugel-Khomskii-type
interaction (KK), governs a host of material properties, including colossal …