very informative clear-cut explanations, and very thankful for the teaching Sir. I'm doing this entire course now.
@zoyaali98574 жыл бұрын
very good lecture.. Thank u sir
@PinhoDeng Жыл бұрын
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.
@rituyadav58082 жыл бұрын
amazing lecture sir...All the things got crystal and clear in my mind...I hugely appreciate ur good work 😊😊❤
@sardar_gurjot Жыл бұрын
Physics and science in general is very proverbial based .
@aaddi_Insight11 ай бұрын
this playlist is gem💎💎 , hats off to you sir , Jai shree ram
@brvaghela91283 жыл бұрын
I am thinking why few people are disliking this lectures.
@arunsinghmehra77285 жыл бұрын
First 10 min goes over my head ...
@josephsagi39265 жыл бұрын
First 10 minutes are of previous lecture summary! So, if you couldn't understand you can ping me! I will help you with that 😊
@orange9923 Жыл бұрын
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.
@louerleseigneur45322 жыл бұрын
Awesome
@arnelectroworld10143 жыл бұрын
1 no sir
@lordson33343 жыл бұрын
thank you sir...
@venkateswararaopattapu66513 жыл бұрын
Thank u sir
@sahibhasan70955 ай бұрын
Thank you so much
@udaytewary38093 жыл бұрын
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
@carolleosamson231411 ай бұрын
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.
@navdeepbedibedi3604 жыл бұрын
Thanku sir 🤗🙏
@SumanDas-gt8uw4 жыл бұрын
Sir..Thanks for the wonderful lectures.. Which book should I follow for basic E-K diagram and the subject?
@HustlerMohit4 жыл бұрын
Jb Gupta and Nagrath and kothari will give you motivation to read higher books like Millikan and heilkiyas.
@saicharanmarrivada50774 жыл бұрын
Donald Neamen book is very good for semiconductor devices
@ramtripathi1621 Жыл бұрын
@@HustlerMohit is Simon and sze good enough?
@cihatguleryuz7493 Жыл бұрын
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?
@Neeraj-is1jt6 ай бұрын
Didn't understand your question please elaborate.
@mohammadazeem71633 жыл бұрын
Where can we find reference book for this concept
@priyamt56264 жыл бұрын
Does the mass of electron becomes lighter when they move through the periodic structure??
@HustlerMohit4 жыл бұрын
That's what we call effective mass m*.
@PriyaYadav-zw4wy3 жыл бұрын
Yeah it's can be higher or lower
@PriyaYadav-zw4wy3 жыл бұрын
It depends on crystal structure
@pranavgeorge15302 жыл бұрын
so what is the differnce between optical band gap and electrical band gap
@khurin39389 ай бұрын
how can i get the diagram for valance band? here you has shown only for conduction band
@jatinkashyap14912 жыл бұрын
Full playlist?
@ishantrivedi55883 жыл бұрын
What is that potential well?
@chappan56153 жыл бұрын
Something pertaining to Quantum Potential Energy. Perhaps, going through QM will aid to it....