Abstract
Magneto-optical materials represent a type of materials that intrinsically or extrinsically lack time-reversal symmetry and exhibit the nonreciprocal magneto-optical effects, which have been extended to two-dimensional layered materials recently. However, the corresponding magneto-optical investigations have thus far been limited to two-dimensional layered inorganic materials. Here we theoretically report the generation and manipulation of the magneto-optical effects in two-dimensional layered organic materials. It is found that monolayer hexagonal organometallic lattice intrinsically supports the nonzero Faraday rotation angle due to the joint contributions from spin-orbit coupling as well as its inherent ferromagnetism. In addition, its evolutions of the band structures and Berry curvatures induced by an external electric field grant us the controllable magneto-optical effects. The nontrivial magneto-optical effects of two-dimensional layered organic materials, in conjunction with their electric-field control, considerably endow the available organic magneto-optical candidates beyond what are currently used in the present magneto-optical fields.
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