Magnetic Field-Induced Condensation of Triplons in Han Purple Pigment BaCuSi${}_2$O${}_6$

M. Jaime, V. F. Correa, N. Harrison +9

Besides being an ancient pigment, BaCuSi${}_2$O${}_6$ is a quasi-2D magnetic insulator with a gapped spin dimer ground state. The application of strong magnetic fields closes this gap…