Seyyed Amir Abbas Emami

11 Questions 6 Answers 0 Followers

Questions related from Seyyed Amir Abbas Emami

How it is possible to on metal have a multi plasmon energy?

did the plasma frequency just related to free electrons or it can be related to bound electrons ?

16 April 2017 8,373 0 View

What is the meainig of the negative value of real part of dielectric function of metals?

The imaginary part of dielectric function related to interband transition. But how can i interpret the negative value of the real part by band theory.

06 April 2017 6,541 2 View

Is there any limitation between transition of electrons in band structure od solid such as selection rule?

I know that for atoms and molecules the electronic transition must obey the selection rule. Now is that the case for solids. i will be grateful if anyone introduce any references.

08 October 2016 2,763 2 View

Can i add dielectric curves of spin up and dn of a half metal compund to obtain total curve just by adding their corresponding data, simply?

I obtain the dielectric curve versus energy of a half metal compound numerically for spin up and dn separately. Now I want to add them together to obtain total dielectric curve. Is it possible to...

05 July 2016 2,993 3 View

Any advice to spin polarize or non-spin polarize thermal properties?

I am trying to obtain transport properties of a half metal material using Boltztrap. In fact this material have different band structure for every spin.Now for calculating transport properties...

30 November 2015 723 2 View

Is there any relation between the heat capacity and the thermal conductivity?

I calculated the contribution of electron in heat capacity of some compounds.Now i want to compare their thermal conductivity which is due to electron contribution.Is there any relation between...

19 November 2015 2,111 11 View

How can I determine cut-off energy in wien2k?

As i know to determine cut-off energy, charge leakage must be considered.But we can also control charge leakage by altering muffin tin radius. Now is there any rule, or criteria to calculate...

23 April 2015 8,539 6 View

What is the mean of strong magnetism in bond magnetism model?

Inspite of a high magnetic moment of Fe proportional to Co, Fe is weak magnetic material but Co is strong magnetic material. Does the exchange interaction matter?

19 March 2015 6,257 4 View

How is it possible that magnetic moments can be ordered in domain structure in itinerant electron?

As I know conduction electrons are not localized then how can they be at rest in domain state?

06 November 2014 5,327 4 View

Does coercivity depend on intensity of applied field?

I measure the magnetic properties of thin film at two different maximum H field by VSM and obtained different coercivity for each of them.

25 July 2014 3,795 7 View

Why must we polish thin films for SEM analysis?

I want to do an analysis of SEM on thin film cross sections. Is it necessary to polish that thin film?

08 July 2014 6,729 9 View