Spin-specific heat determination of the ratio of competing first- and second-neighbor exchange interactions in frustrated spin-$\frac{1}{2}$ chains

Dayasindhu Dey, Manoranjan Kumar, Siân E. Dutton +2

The magnetic susceptibility $\chi (T)$ of spin-1/2 chains is widely used to quantify exchange interactions, even though $\chi (T)$ is similar for different combinations of ferromagnetic $J…