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Theoretical investigation of multiferroic metal-organic framework magnet [CH3NH3][Co(HCOO)3]: Green’s function method.

A new interesting article has been published in J Phys Condens Matter. 2018 Oct 10;30(40):405802. doi: 10.1088/1361-648X/aadc80. Epub 2018 Sep 13. and titled:

Theoretical investigation of multiferroic metal-organic framework magnet [CH3NH3][Co(HCOO)3]: Green’s function method.

Authors of this article are:
Li Y1, Yao K.

A summary of the article is shown below:
For the first presented magnetic ordering-induced multiferroics with a metal-organic framework (MOF) of formula [CH3NH3][Co(HCOO)3], we theoretically investigate its multiple ferroics. It is found that Dzyaloshinskii-Moriya interaction is a main cause that leads to non-zero magnetization, and electric polarization, and the induced electric polarization can be regulated by magnetic fields. As an assistant mechanism, magnon-magnon interaction and quantum fluctuation play an important role on ferroelectrics and magnetism. Our methods are based on the double-time Green’s function and Holstein-Primakoff transformation. Theoretical results can be compared with experiments, though there are some discrepancies.

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