Search found 5 matches

by lzl8181
Fri Mar 18, 2011 1:01 am
Forum: Other tools and postprocessing in ABINIT
Topic: ABINIT calculates Muliken charge or bond population
Replies: 0
Views: 2292

ABINIT calculates Muliken charge or bond population

Hello, dear experts I am a beginner of ABINIT, I find some time I have to calculate Muliken population or bond population, for example, using F.M. Gao's emprical formula to calculate the hardness of crystals, [F.M. Gao's etal, Hardness of Covalent Crystals, PRL. 91(2003) 015502], but I find I can't ...
by lzl8181
Wed Feb 16, 2011 11:43 am
Forum: Ground state
Topic: how to get bulk modulus by Birch-Murnaghan equation?
Replies: 5
Views: 6611

Re: how to get bulk modulus by Birch-Murnaghan equation?

Dear Pro. Zwanziger
thanks! I see.
by lzl8181
Sat Feb 12, 2011 3:13 am
Forum: Ground state
Topic: how to get bulk modulus by Birch-Murnaghan equation?
Replies: 5
Views: 6611

how to get bulk modulus by Birch-Murnaghan equation?

hello,everyone! in lectures, i know two methods are often adopted to caculate bulk modulus by Birch-Murnaghan equation: one is increasing isotrpic static pressure on the unit cell (Bravais lattice) step by step, then get the relevant energy, finally using Energy-Pressure-type Birch-Murnaghan equatio...
by lzl8181
Thu Jan 27, 2011 9:42 pm
Forum: Response calculations
Topic: [SOLVED] Are there using coordinate transf in caculating RF?
Replies: 2
Views: 5537

Re: Are there using coordinate transformation in caculating

Dear prof. Zwanziger,
I'm very glad to receive you timely reply! Thank you for your help! That question has confused me for a long time, many articles give different blurred expressions, it is sloved today!
by lzl8181
Thu Jan 27, 2011 1:27 am
Forum: Response calculations
Topic: [SOLVED] Are there using coordinate transf in caculating RF?
Replies: 2
Views: 5537

[SOLVED] Are there using coordinate transf in caculating RF?

we know there exist three sets of coordinates in solid physics or crystal physics: the conventional unit (basal vector of this coordinate: A, B,C), the primitive unit (basal vector :a,b,c), and the Cartesian coordinate (basal vector : x,y,z), but in usual caculation, we often adopt the primitive uni...