Role of density-dependent magnon hop** and magnon-magnon repulsion in ferrimagnetic spin-(1/2, ) chains in a magnetic field

WM Da Silva, RR Montenegro-Filho - Physical Review B, 2021 - APS
We compare the ground-state features of alternating ferrimagnetic chains (1/2, S) with S= 1,
3/2, 2, 5/2 in a magnetic field and the corresponding Holstein-Primakoff bosonic models up …