Thank you for explaining these concepts in very intuitive language. Your explanations serve to guide me when I read textbooks that going into detailed equation derivations.
Except for the free electron case, hbark doesn't represent the real momentum of the electron rather a quantity which can be referred to as the pseudo momentum or the crystal momentum.
First of all a really thankyou for this amazing lecture And I have a doubt sir about effective mass that when electron moves in the periodic crystal it's experience different mass how is it possible to understand it. 2) since electron moves in periodic crystal that in all directions arrangement being the same so how the effective mass be anisotropic why not it should be isotropic
Hi, to answer your first question, understand that electrons have thermal energy which contributes to atomic vibrations, that means electrons do move slightly because of collisions/scattering, that again disturbs the speed of electrons. Periodic potential is nothing but electrons experience some kind of resistance due to the potential they have(i.e, periodic potential), disturbing the speed/velocity/mobility of the electrons.
Thank you, professor. I would like to ask a question about introducing potential wells shape like Dirac potential at (6:41). why do we exhibit this as the shape of Dirac-like potential?
The best lectures..... crystal clear concept 😍
Iam lucky to find this jackpot of videos 😁😁🤗🤩
Amazing...Best resources for gate EDC ❤️❤️❤️
Hi..does this playlist cover entire edc
very informative clear-cut explanations, and very thankful for the teaching Sir. I'm doing this entire course now.
Thank you for explaining these concepts in very intuitive language. Your explanations serve to guide me when I read textbooks that going into detailed equation derivations.
amazing lecture sir...All the things got crystal and clear in my mind...I hugely appreciate ur good work 😊😊❤
very good lecture.. Thank u sir
Physics and science in general is very proverbial based .
this playlist is gem💎💎 , hats off to you sir , Jai shree ram
I am thinking why few people are disliking this lectures.
First 10 min goes over my head ...
First 10 minutes are of previous lecture summary! So, if you couldn't understand you can ping me! I will help you with that 😊
Except for the free electron case, hbark doesn't represent the real momentum of the electron rather a quantity which can be referred to as the pseudo momentum or the crystal momentum.
Awesome
1 no sir
thank you sir...
Thank u sir
Thank you so much
Thanku sir 🤗🙏
First of all a really thankyou for this amazing lecture
And I have a doubt sir about effective mass that when electron moves in the periodic crystal it's experience different mass how is it possible to understand it.
2) since electron moves in periodic crystal that in all directions arrangement being the same so how the effective mass be anisotropic why not it should be isotropic
Hi, to answer your first question, understand that electrons have thermal energy which contributes to atomic vibrations, that means electrons do move slightly because of collisions/scattering, that again disturbs the speed of electrons. Periodic potential is nothing but electrons experience some kind of resistance due to the potential they have(i.e, periodic potential), disturbing the speed/velocity/mobility of the electrons.
Sir..Thanks for the wonderful lectures..
Which book should I follow for basic E-K diagram and the subject?
Jb Gupta and Nagrath and kothari will give you motivation to read higher books like Millikan and heilkiyas.
Donald Neamen book is very good for semiconductor devices
@@HustlerMohit is Simon and sze good enough?
Thank you, professor. I would like to ask a question about introducing potential wells shape like Dirac potential at (6:41). why do we exhibit this as the shape of Dirac-like potential?
Didn't understand your question please elaborate.
how can i get the diagram for valance band?
here you has shown only for conduction band
Where can we find reference book for this concept
Does the mass of electron becomes lighter when they move through the periodic structure??
That's what we call effective mass m*.
Yeah it's can be higher or lower
It depends on crystal structure
so what is the differnce between optical band gap and electrical band gap
Full playlist?
What is that potential well?
Something pertaining to Quantum Potential Energy. Perhaps, going through QM will aid to it....
@@chappan5615 acha
are these topics included in gate exam
Why r we studying this?
To understand how SC works!
too basic. Very little physics given