Large magnetic field-induced spectral weight enhancement of high-energy spin excitations in $L{a}_{1.88}S{r}_{0.12}Cu{O}_4$

L. H. Machtoub, B. Keimer, K. Yamada

We report electronic Raman scattering experiments on a superconducting $\mathrm{L}{\mathrm{a}}_{1.88}\mathrm{S}{\mathrm{r}}_{0.12}\mathrm{Cu}{\mathrm{O}}_4$ single crystal in a magnetic field. At low temperatures, the spectral weigh…