Emergent Random Spin Singlets in Disordered Spin-1/2 perovskite BaCu${}_{1/3}$Ta${}_{2/3}$O${}_3$

Sagar Mahapatra, Francesco De Angelis, Dibyata Rout +8

We investigate the disordered perovskite BaCu${}_{1/3}$Ta${}_{2/3}$O${}_3$, where Cu (spin-1/2) and Ta randomly occupy a pseudo-cubic lattice. Synchrotron X-ray diffraction and X-ray abs…