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armandowww
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Is a conductive movement of an electron inside a band a particular infraband non-radiative transition?
armandowww said:People you leave me speechless. Thanks Gokul, I was talking about this subject on a terminologic level. If an electron moves around within a band do you got some kind a "transition"? Your way of saying gapless excitation seems good: for fixed n (band index) E(k) is a single-valued continuous function, so if k varies you got a gapless "transition". Is it clear?
armandowww said:dear Zz, I don't need of any transition. I put down this post just for curiosity. My question was confusing but I think I efforted it: when I talk about E(k), I'm already in the speech juice. It's useless your invocation to Bloch Theorem: I took it for granted.
Instead, in the semiclassical theory of conduction, in the classical limits (due to the Ehrenfest Theorem and the correspondence principle) you can deal with electrons like particles in the k-space, so your electronic states are subject to quantum statistics, Pauli exclusion principle... You justify also Ohm law.
So, finally, if you see electrons moving within band, with some energy variations, why don't you talk about transition?
If your answer is no, say it and that shuold be enogh!
Regards
armandowww said:I'm sorry but your point of view is too far by the mine. Maybe we belong to two different schools of thinking. My textbook refers to Ziman, Principles of the theory of solids, 1969.
As ultimate attempt of my explanation: the real meaning of crysal momentum takes place in its variation. If you introduce effective mass, a crystal momentum variation is equal to the electron linear momentum variation that contains effective mass instead of electron mass.
So the dynamical equation in this MY theory can relate a external force, electrical field times the charge or Lorentzian force (or both of them), with these variations.
Now group velocity is zero only in critical points; energy variations are always involved, in conductive subject...
I am on the edge of the embarrassment.
armandowww said:Modey3... I think the discrete property is not a good motive here. Thanks Physics Monkey, your exposition is my favourite. You have got my comprehension. But I don't understand why Zz thought of my idea as criminal. He is still keeping at thinking I am right and I want so. I'm just searching for learning...
"Solid State Curiosity: Infraband Non-Radiative Transitions" refers to a phenomenon that occurs in solid state materials, where electrons can transition between energy levels without emitting or absorbing photons.
The study of Infraband Non-Radiative Transitions is important because it has many practical applications in fields such as electronics, optoelectronics, and energy harvesting. Understanding these transitions can lead to the development of more efficient and advanced technologies.
Infraband Non-Radiative Transitions occur due to the interaction between electrons and the crystal lattice of the solid state material. This interaction causes the electrons to change energy levels without emitting or absorbing photons.
Infraband Non-Radiative Transitions can occur in a variety of materials, including semiconductors, insulators, and metals. However, the exact mechanism and efficiency of the transitions may vary depending on the specific material properties.
Scientists use various techniques such as optical spectroscopy, electrical measurements, and theoretical calculations to study Infraband Non-Radiative Transitions. These methods allow them to observe and analyze the behavior of electrons in solid state materials and gain a better understanding of the underlying processes.