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.
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?
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.
The best lectures..... crystal clear concept 😍
Iam lucky to find this jackpot of videos 😁😁🤗🤩
very informative clear-cut explanations, and very thankful for the teaching Sir. I'm doing this entire course now.
Amazing...Best resources for gate EDC ❤️❤️❤️
Hi..does this playlist cover entire edc
this playlist is gem💎💎 , hats off to you sir , Jai shree ram
very good lecture.. Thank u sir
Making such an interesting topic boring is an art.
Physics and science in general is very proverbial based .
amazing lecture sir...All the things got crystal and clear in my mind...I hugely appreciate ur good work 😊😊❤
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.
Hello I’m a first year first semester student please tell me the text book you are using I truly need one
I am thinking why few people are disliking this lectures.
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.
Basic Quantum mechanics is necessary for taking this lecture. Specially solution of Schrodinger equation for quantum well.
how can i get the diagram for valance band?
here you has shown only for conduction band
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.
Where can we find reference book for this concept
so what is the differnce between optical band gap and electrical band gap
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 😊
Full playlist?
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 sir...
Awesome
What is that potential well?
Something pertaining to Quantum Potential Energy. Perhaps, going through QM will aid to it....
@@chappan5615 acha
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?
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
1 no sir
Thanku sir 🤗🙏
Thank you so much
Bhagwan hai sir aapl
Thank u sir
are these topics included in gate exam
Why r we studying this?
To understand how SC works!
too basic. Very little physics given