期刊论文详细信息
Optical absorption of spin ladders | |
Article | |
关键词: EXCITATION SPECTRUM; CHAINS; DYNAMICS; STATES; S=1/2; | |
DOI : 10.1103/PhysRevB.61.14307 | |
来源: SCIE |
【 摘 要 】
We present a theory of phonon-assisted optical two-magnon absorption in two-leg spin ladders. Based on the strong intra-rung-coupling limit we show that collective excitations of total spin S = 0, 1, and 2 exist outside of the two-magnon continuum. It is demonstrated that the singlet collective state has a clear signature in the optical spectrum.
【 授权许可】
Free