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Exchange field Date: 2016/06/13 16:25 Name: Riemann   <riemann.derakhshan@gmail.com> Dear OpenMX users and Developers, I've simulated the electronic Band structure of Graphene in the presence of exchange field induced by ferromagnetic insulator as a substrate in the framework of Tight-Bindin approximation. I want to do the same thing with OpenMX. Now, my question is this, Is it possible to introduce exchange field (Not Magnetic field) along arbitrary direction in OpenMX?

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Re: Exchange field ( No.1 ) Date: 2016/06/23 14:04 Name: T. Ozaki Hi, I guess that the interaction may be written by Hex(r) dot s(r), where Hex(r) is the exchange field and, s(r) is a vector representation (sx,sy,sz) of spin. If so, one may include the energy term to the total energy expression, and derive a variational equation, while the implementation will require significant involvement in the inside of code. Regards, TO

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