Fig. 2: Bond-dependent antiferromagnetism in Cu3Co2SbO6.
χ(T) of Cu3Co2SbO6 under different orientations of applied H along a the bond-parallel direction, b the bond-perpendicular direction, and c, perpendicular to honeycomb planes. Full datasets are listed in Supplementary Fig. 6. The T and H dependent contour plot of derivative susceptibility, dχ/dT, along d the bond-parallel direction, e the bond-perpendicular direction, and f, perpendicular to honeycomb planes. The antiferromagnetic and paramagnetic regions are indicated by red and blue areas, respectively. g An overlapped graph of χbond//(T) and χbond⊥(T) presenting in-plane magnetic anisotropy under various H. h M-H and dM/dH curves with H along the bond-parallel and bond-perpendicular directions. Open and closed triangles (circles) indicate the bond-parallel and bond-perpendicular directions M-H (dM/dH) curves, respectively. The error bar is smaller than the size of point. The vertical dashed lines indicate the HC for bond-parallel and bond perpendicular directions. These results support the presence of considerable anisotropic Kitaev term.
