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wuli8

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[交流] 在线答疑:Wien2k的问题

希望能在这里跟大家一起交流探讨涉及Wien2k的问题。
希望做Wien2k的朋友有什么建议、资料或信息能在这里提供出来，以便交流！
以下内容随时补充~~~~

群名：小木虫wien2k群
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欢迎提问，提问有奖。
更欢迎高手们前来解答问题，合理的答案有重奖！
谢谢！

[ Last edited by wuli8 on 2009-11-10 at 16:41 ]

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…………

1楼2008-12-01 21:19:07

已阅回复此楼关注TA 给TA发消息送TA红花 TA的回帖

wuli8

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★ ★ ★
wuchenwf(金币+3,VIP+0):谢谢 8-21 20:07

引用回帖:

I have finished spin polarised calculation for Gd(2*2*2 supercell) with Cd
impurity.But When I started with same structure for unpolarised calculation
with RKMAX=7.5:GMAX=14 and 300kpoints(to begin with),the computation
doesn;t seems to converge.After 200 cycle we noticed that both charge and
energy are oscillating.So please help me in this regard.I have also
calculated
unpolarised calculation for pure Gd.So what may be the problem?

引用回帖:

I'm not surprised that a Gd-supercell does NOT converge in an
unpolarized calculation.

You have to consider the underlying physics: Gd metal has 7 4f
electrons, thus in a polarized calculation this gives a rather stable
situation, i.e. "all" 7 spin-up states are occupied, but all 7 spin-dn
states empty.
In an unpolarized case you must put 7 electrons into "3.5 states" (each
state takes now 2 electrons!) and it is rather naturally that this will
cause problems.

The VERY efficient mixer seems to manage this for pure Gd, but in the
supercell there are many more degrees of freedom and thus convergence is
much more difficult. Eventually, switching to TEMP and a rather large
broadening will help to converge.

In any case, you have to ask yourself: what should this calculation be
good for ?? Even above the Neel/Curie-point one has local magnetic
moments (only the long range order has gone).

引用回帖:

I have calculated spin polarised calculation in Gd(2*2*2)for Cd
impurity and the results,hyperfine field, magnetic moment,electric
field gradient reasonably matches with available literature.actually
I am interested to find out the electric field gradient of Cd in Gd at room
temperature which is paramagnetic, and thats why I have started unpolarised
calculation,and faced the problem.So how to proceed in this regard?

引用回帖:

A paramagnetic state of a 4f compound does NOT mean that one should do a
unpolarized calculation.
Even in the paramagnetic case, one has local moments on each Gd site, but
they are no longer long range ordered, but randomly oriented, thus there
is no net magnetization.

Eventually you can try the effects of magnetic disorder and flip the spins
on two Gd atoms in your supercell (so that the net moment of the cell is again
zero, but you do not have the strict AF state anymore.

PS: I'd expect a rather small influence on the EFG on Cd by that. Other effects
(lattice expansion and phonons) may play a role too.

248楼2009-08-03 21:09:07

已阅回复此楼关注TA 给TA发消息送TA红花 TA的回帖

查看全部 275 个回答

wuli8

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编译时出现如下问题，请问如何解决？
谢谢！
Compile time errors (if any) were:
SRC_afminput/compile.msg:make: *** [afminput.o] Error 127
SRC_aim/compile.msg:make[1]: *** [moduls.o] Error 127
SRC_aim/compile.msg:make: *** [real] Error 2
SRC_aim/compile.msg:make[1]: *** [moduls.o] Error 127
SRC_aim/compile.msg:make: *** [complex] Error 2
SRC_balsac-utils/compile.msg:make: [clean] Error 1 (ignored)
SRC_balsac-utils/compile.msg:make: *** [outnn2plt.o] Error 127
SRC_broadening/compile.msg:make: *** [broadening.o] Error 127
SRC_cif2struct/compile.msg:make: *** [module.o] Error 127
SRC_clmcopy/compile.msg:make: *** [clmcopy.o] Error 127
SRC_dstart/compile.msg:make: *** [reallocate.o] Error 127
SRC_elast/compile.msg:make: [clean] Error 1 (ignored)
SRC_elast/compile.msg:make: *** [genetempl.o] Error 127
SRC_eosfit6/compile.msg:make: [clean] Error 1 (ignored)
SRC_eosfit6/compile.msg:make: *** [eosfit6.o] Error 127
SRC_eosfit/compile.msg:make: [clean] Error 1 (ignored)
SRC_eosfit/compile.msg:make: *** [eosfit.o] Error 127
SRC_filtvec/compile.msg:make[1]: *** [filtvec.o] Error 127
SRC_filtvec/compile.msg:make: *** [real] Error 2
SRC_filtvec/compile.msg:make[1]: *** [filtvec.o] Error 127
SRC_filtvec/compile.msg:make: *** [complex] Error 2
SRC_fsgen/compile.msg:make: [clean] Error 1 (ignored)
SRC_fsgen/compile.msg:make: *** [bcc_fs_mesh.o] Error 127
SRC_initelnes/compile.msg:make: *** [initelnes.o] Error 127
SRC_initxspec/compile.msg:make: *** [initxspec.o] Error 127
SRC_irrep/compile.msg:make: *** [felder.o] Error 127
SRC_joint/compile.msg:make: *** [felder.o] Error 127
SRC_kgen/compile.msg:make: *** [main.o] Error 127
SRC_kram/compile.msg:make: *** [drude.o] Error 127
SRC_lapw0/compile.msg:make[1]: *** [modules.o] Error 127
SRC_lapw0/compile.msg:make: *** [seq] Error 2
SRC_lapw1/compile.msg:make[1]: *** [modules.o] Error 127
SRC_lapw1/compile.msg:make: *** [real] Error 2
SRC_lapw1/compile.msg:make[1]: *** [modules.o] Error 127
SRC_lapw1/compile.msg:make: *** [complex] Error 2
SRC_lapw2/compile.msg:make[1]: *** [reallocate.o] Error 127
SRC_lapw2/compile.msg:make: *** [real] Error 2
SRC_lapw2/compile.msg:make[1]: *** [reallocate.o] Error 127
SRC_lapw2/compile.msg:make: *** [complex] Error 2
SRC_lapw3/compile.msg:make[1]: *** [atomgrid.o] Error 127
SRC_lapw3/compile.msg:make: *** [real] Error 2
SRC_lapw3/compile.msg:make[1]: *** [atomgrid.o] Error 127
SRC_lapw3/compile.msg:make: *** [complex] Error 2
SRC_lapw5/compile.msg:make[1]: *** [atomgrid.o] Error 127
SRC_lapw5/compile.msg:make: *** [real] Error 2
SRC_lapw5/compile.msg:make[1]: *** [atomgrid.o] Error 127
SRC_lapw5/compile.msg:make: *** [complex] Error 2
SRC_lapw7/compile.msg:make[1]: *** [moduls.o] Error 127
SRC_lapw7/compile.msg:make: *** [real] Error 2
SRC_lapw7/compile.msg:make[1]: *** [moduls.o] Error 127
SRC_lapw7/compile.msg:make: *** [complex] Error 2
SRC_lapwdm/compile.msg:make[1]: *** [reallocate.o] Error 127
SRC_lapwdm/compile.msg:make: *** [real] Error 2
SRC_lapwdm/compile.msg:make[1]: *** [reallocate.o] Error 127
SRC_lapwdm/compile.msg:make: *** [complex] Error 2
SRC_lapwso/compile.msg:make: *** [reallocate.o] Error 127
SRC_lcore/compile.msg:make: *** [cdsld.o] Error 127
SRC_lorentz/compile.msg:make: *** [lorentz.o] Error 127
SRC_lstart/compile.msg:make: *** [cdlsd.o] Error 127
SRC_mini/compile.msg:make: *** [mxpmgrid.o] Error 127
SRC_mixer/compile.msg:make: *** [charge.o] Error 127
SRC_nn/compile.msg:make: *** [struk.o] Error 127
SRC_optic/compile.msg:make[1]: *** [modules.o] Error 127
SRC_optic/compile.msg:make: *** [real] Error 2
SRC_optic/compile.msg:make[1]: *** [modules.o] Error 127
SRC_optic/compile.msg:make: *** [complex] Error 2
SRC_optimize/compile.msg:make: [clean] Error 1 (ignored)
SRC_optimize/compile.msg:make: *** [optimize.o] Error 127
SRC_orb/compile.msg:make: *** [modules.o] Error 127
SRC_pairhess/compile.msg:make: *** [energy.o] Error 127
SRC_phonon/compile.msg:make: [clean] Error 1 (ignored)
SRC_phonon/compile.msg:make: *** [phonon2wien2k_sym.o] Error 127
SRC_qtl/compile.msg:make: *** [reallocate.o] Error 127
SRC_spacegroup/compile.msg:make: *** [spacegroup.o] Error 127
SRC_spaghetti/compile.msg:make: *** [reallocate.o] Error 127
SRC_structeditor/compile.msg:make[1]: *** [module.o] Error 127
SRC_structeditor/compile.msg:make: *** [all] Error 2
SRC_sumpara/compile.msg:make: *** [errclr.o] Error 127
SRC_supercell/compile.msg:make: *** [supercell.o] Error 127
SRC_symmetry/compile.msg:make: *** [symmetry.o] Error 127
SRC_symmetso/compile.msg:make: *** [symmetso.o] Error 127
SRC_telnes2/compile.msg:make: *** [modules.o] Error 127
SRC_tetra/compile.msg:make: *** [reallocate.o] Error 127
SRC_trig/compile.msg:make: [clean] Error 1 (ignored)
SRC_trig/compile.msg:make: *** [rhomb_in5.o] Error 127
SRC_txspec/compile.msg:make: *** [reallocate.o] Error 127