Sign-switching of dimer correlations in SrCu${}_2$(BO${}_3$)${}_2$ under hydrostatic pressure

Simon Bettler, Lena Stoppel, Zewu Yan +2

Magnetic and vibrational excitations in SrCu${}_2$(BO${}_3$)${}_2$ are studied using Raman spectroscopy at hydrostatic pressures up to 34 kbar and temperatures down to 2.6 K. The frequen…