[Wien] how to find Stoner parameter using wien2k

David Tompsett dat36 at cam.ac.uk
Thu Jul 7 13:07:17 CEST 2011


Hi Shamik,

Sayed's advice is good. There are also some procedures based on Fixed spin
moment calculations. You will have to think carefully about whether your
system is metallic or locaised type. The links in the appendix to this paper
should help:

Ylvisaker and Pickett, PHYSICAL REVIEW B 79, 035103 2009

Best,
David.

2011/7/6 Seyed Javad Hashemifar <hashemifar at cc.iut.ac.ir>

> I have no experience on calculation of stoner parameter and interesting to
> learn it. However, by doing a simple spin polarized calculations with
> nonzero and parallel initial moments on your system, you may easily find
> whether your system prefers ferromagnetism or not. The initial magnetic
> moments are controlled in case.inst file.
> SJ Hashemifar
> ======================================
> Seyed Javad  Hashemifar
> Physics Department, Isfahan University of Technology
> 84156-83111 Isfahan, Iran
> Tel: +98 311 391 2375     Fax:+98 311 3912376
> Email:  hashemifar at cc.iut.ac.ir
> Homepage:  http://hashemifar.iut.ac.ir
> ---------------------------------------------------------------------------
>
>
> 2011/7/6 Shamik Chakrabarti <shamikiitkgp at gmail.com>
>
>>
>> Dear wien2k users,
>>
>> According to the Stoner band theory of magnetism, one can able to predict
>> the magnetic ground state of the material as it is paramagnetic or
>> ferromagnetic using product of the non magnetic density of states around the
>> Fermi level (N(E)) and the Stoner parameter (I). As given in some of the
>> literature, the Stoner parameter  can be described as the exchange integral
>> and it could be found using LSDA and LMTO methods. see the fallowing
>> literature...
>>
>> 1. http://prb.aps.org/pdf/PRB/v16/i1/p255_1
>>
>> 2. http://jap.aip.org/resource/1/japiau/v89/i11/p6889_s1
>>
>> We are doing our calculations in Wein2K package using the GGA
>> approximation and we want to know how the stoner parameter could be found
>> according to the my calculations. As non magnetic calculations gives the
>> total density of states at around the Fermi level, it is very helpful for us
>> to predict the material is magnetic or not using the Stoner parameter.
>> therefore, please suggest us how to find the Stoner parameter using wein2k
>> package.
>>  --
>> Shamik Chakrabarti
>> Research Scholar
>> Dept. of Physics & Meteorology
>> Material Processing & Solid State Ionics Lab
>> IIT Kharagpur
>> Kharagpur 721302
>> INDIA
>>
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>>
>>
>
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