Zobrazeno 1 - 10
of 190
pro vyhledávání: '"Combescot, Monique"'
Publikováno v:
Physical Review B 107, 115206 (2023)
We propose a quantum approach to "electron-hole exchange", better named electron-hole pair exchange, that makes use of the second quantization formalism to describe the problem in terms of Bloch-state electron operators. This approach renders transpa
Externí odkaz:
http://arxiv.org/abs/2308.09410
Autor:
Shiau, Shiue-Yuan, Combescot, Monique
Publikováno v:
Annals of Physics 458, 169431 (2023)
We here present a fresh approach to Frenkel excitons in cubic semiconductor crystals, with a special focus on the spin and spatial degeneracies of the electronic states. This approach uses a second quantization formulation of the problem in terms of
Externí odkaz:
http://arxiv.org/abs/2308.09299
Publikováno v:
Phys Rev B 107, L081203 (2023)
Semiconductor excitons are commonly seen as hydrogen atom. This analogy requires a unique hole mass. In reality, this is not so due to the complexity of the semiconductor band structure. The precise consequences on the exciton physics of the Coulomb
Externí odkaz:
http://arxiv.org/abs/2302.06383
Autor:
Combescot, Monique, Shiau, Shiue-Yuan
Publikováno v:
J. Phys.: Condens. Matter (2022)
The angular momentum formalism provides a powerful way to classify atomic states. Yet, requiring a spherical symmetry from the very first line, this formalism cannot be used for periodic systems, even though cubic semiconductor states are commonly cl
Externí odkaz:
http://arxiv.org/abs/2202.12475
Publikováno v:
Europhysics Letters (2022)
Quantum fluctuations of the electromagnetic field are known to produce the atomic Lamb shift. We here reveal their iconic signature in semiconductor physics, through the blue-shift they produce to optically bright excitons, thus lifting the energy of
Externí odkaz:
http://arxiv.org/abs/2202.10652
Publikováno v:
Phys. Rev. B 105, 035301 (2022)
We consider photons strongly coupled to the excitonic excitations of a coupled quantum well, in the presence of an electric field. We show how under a field increase, the hybrid polariton made of photon coupled to hybrid carriers lying in the two wel
Externí odkaz:
http://arxiv.org/abs/2112.08779
Autor:
Shiau, Shiue-Yuan, Combescot, Monique
Publikováno v:
Phys. Rev. B 104, 045203 (2021)
Semiconductor valence holes are known to have heavy and light effective masses; but the consequence of this mass difference on Coulomb scatterings has been considered intractable and thus ignored up to now. The reason is that the heavy/light index is
Externí odkaz:
http://arxiv.org/abs/2107.05854
Autor:
Shiau, Shiue-Yuan, Combescot, Monique
Publikováno v:
SEMICONDUCTORS, Vol. 55, No. 9, pp. 1068 (2021)
This paper provides the long-missing foundation to connect semiconductor and atomic notations and to support results incorrectly obtained by doing as if semiconductor electrons possessed an orbital angular momentum. We here show that the phase factor
Externí odkaz:
http://arxiv.org/abs/2104.13644
Autor:
Combescot, Monique, Shiau, Shiue-Yuan
Publikováno v:
Physical Review B 101, 195203 (2020)
The Bloch theorem mathematically proves that in a periodic crystal, electrons can acquire a negative mass. The present work aims to provide a physical understanding for why this is so. We successively analyze the consequences of the 3-fold orbital va
Externí odkaz:
http://arxiv.org/abs/2005.06328