Recent content by moj20062001

i want a lecture note for the book "many body theory of solids" by John C.Inkson, please?!

hi can anyone help me to get complete lecture notes of a many body course which is taught according the book of "many body theory of solids" by John C.Inkson, please?

i think you can answer this question according to the abillity of the magnetic moments to get alighned with the external magnetic field or not.

you know,we always have discrete set of energy levels.but as the dimention of the box get larger we see this discreteness harder. there is no strict limitation on the realm of quantum and classic justification. if you want certain number,i think you would find nothing. we say when the...

yes we can; in this case C is equal to: +_sgn(U)C u can find the exact equation in,Solid State Physics By Ashcroft&Mermin.chapter9,equation (9.29)-

it can undergo a breakdown if the current and voltage is high... but befor this happens,reverse current powers up the apposing field in the middle and so it apposes the passing of the current.

I think,in this case dU has been take into two parts: 1.ΔU;that is an internal interaction change of energy,and 2.PdV-TdS;that the exra term which u see is TdS=nkTln(V'/V) maybe!?

i think,a quantum dot is one that have the properties between bulk semiconductor and molecules.its the defining charectristics of them. now you can have diffrent size of them,and different types,but the behaviour should be included in those properties(something between bulk semiconductor and...

Hi Talker1500: as far as i know,the magnetism of an atom is due to 1.electron's spin+2.L of electrons+3.the change that external field can have on them. for a configurations of atoms with their electron in a matter,you should solve the problem statistically. you'd better to take a look at...

Good luck! :) what is the book then,that you are studying?! ;)

thanks Dreak. but i know the meaning of degeneracy in such cases as you mentioned. the problem is some how confusing in this case,i can't visuallize something like what you have shown in the links. as a matter of fact,i can't get what is the term degeneracy referring to...! i can send u the...

Hi; In chapter 9 of Solid state physics of Ashcroft&Mermin(Electrons in a weak periodic potential), there is a General Approch to the Schrodinger Equation when the Potential is Weak. i can't understand what is meant by the term DEGENERACY? or what does "nearly degenerate free electron...

there is a simble in physics that is due to the special relativity that u can show the second derivative of time combined with the laplacian of x,y and z. u can find it in the "electromagnetic theory" book that is written by,milford,rits and cristy.(i'm not sure at all,about the spelling of...

excuse me, i have a question. can u help me please? i want to know the difference between the wave equation and the maxwell equations. i mean what is the different uses of these two? thank u.