Spin excitations in nanographene-based antiferromagnetic spin-½ Heisenberg c...

Antiferromagnetic Heisenberg chains exhibit two distinct types of excitation spectra: gapped for integer-spin chains and gapless for half-integer-spin chains. However, in...反铁磁海森堡链（Antiferromagnetic Heisenberg chains）展现出两类截然不同的激发谱：整数自旋链对应有能隙激发谱，半整数自旋链则对应无能隙激发谱。然而，在……