Evidence of quantum dimer excitations inSr3Ir2O7
Physical Review B2015Vol. 92(2)
Citations Over TimeTop 10% of 2015 papers
M. Moretti Sala, Vera Schnells, S. Boseggia, Laura Simonelli, A. Al-Zein, J. G. Vale, Luigi Paolasini, Emily C. Hunter, Robin Perry, D. Prabhakaran, A. T. Boothroyd, M. Krisch, G. Monaco, H. M. Rønnow, D. F. McMorrow, Frédéric Mila
Abstract
Sr${}_{3}$Ir${}_{2}$O${}_{7}$ is a member of the iridate Ruddlesden-Popper series Sr${}_{n+1}$Ir${}_{n}$O${}_{3n+1}$ with electronic properties that interpolate between the insulating single-layer Sr${}_{2}$IrO${}_{4}$ ($n=1$) and a metallic compound SrIrO${}_{3}$ ($n=\mathrm{\ensuremath{\infty}}$). Using resonant inelastic X-ray scattering (RIXS) experiments, the authors reveal a new magnetic mode and propose a model based on weakly coupled quantum dimers to describe the observed excitation spectrum.
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