Supersymmetric spin–phonon coupling prevents odd integer spins from quantum tunneling Kilian Irländer, Heinz-Jürgen Schmidt and Jürgen Schnack Eur. Phys. J. B, 94 3 (2021) 68 Published online: 23 March 2021 DOI: 10.1140/epjb/s10051-021-00073-3