Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Deych, Lev I."'
The variance of the Lyapunov exponent is calculated exactly in the one-dimensional Anderson model with random site energies distributed according to the Cauchy distribution. We derive an exact analytical criterion for the validity of the single param
Externí odkaz:
http://arxiv.org/abs/cond-mat/0104466
We study the local states within the polariton bandgap that arise due to deep defect centers with strong electron-phonon coupling. Electron transitions involving deep levels may result in alteration of local elastic constants. In this case, substanti
Externí odkaz:
http://arxiv.org/abs/cond-mat/0102392
We study analytically defect polariton states in Bragg multiple-quantum-well structures and defect induced changes in transmission and reflection spectra. Defect layers can differ from the host layers in three ways: exciton-light coupling strength, e
Externí odkaz:
http://arxiv.org/abs/cond-mat/0101317
Numerical study of the scaling of transmission fluctuations in the 1-D localization problem in the presence of absorption is carried out. Violations of single parameter scaling for lossy systems are found and explained on the basis of a new criterion
Externí odkaz:
http://arxiv.org/abs/cond-mat/0101296
Publikováno v:
Optics Lett. 25, No. 23 (2000).
We analytically study optical properties of several types of defects in Bragg multiple quantum well structures. We show that a single defect leads to two local polariton modes in the photonic band gap. These modes lead to peculiarities in reflection
Externí odkaz:
http://arxiv.org/abs/cond-mat/0006170
The concept of local polaritons is used to describe optical properties of mixed crystals in the frequency region of their {\it restrahlen} band. It is shown that this concept allows for a physically transparent explanation of the presence of weak fea
Externí odkaz:
http://arxiv.org/abs/cond-mat/0004202
Autor:
Deych, Lev I., Lisyansky, A. A.
Publikováno v:
to be published in Phys. Rev. B, v. 62, issue 7, 2000
The structure of polariton spectrum is analyzed for periodic multiple quantum well structures with periods at or close to Bragg resonance condition at the wavelength of the exciton resonance. The results obtained used to discuss recent reflection and
Externí odkaz:
http://arxiv.org/abs/cond-mat/0003054
The variance of the Lyapunov exponent is calculated exactly in the one-dimensional Anderson model with random site energies distributed according to the Cauchy distribution. We find a new significant scaling parameter in the system, and derive an exa
Externí odkaz:
http://arxiv.org/abs/cond-mat/9909155
Publikováno v:
Phys. Rev. B 59, 11339 (1999).
We consider tunneling of electromagnetic waves through a polariton band gap of a 1-D chain of atoms. We analytically show that a defect embedded in the structure gives rise to the resonance transmission at the frequency of a local polariton state ass
Externí odkaz:
http://arxiv.org/abs/cond-mat/9903172
Publikováno v:
Europhys. Lett. 46, 524 (1999)
We consider tunneling of electromagnetic waves through a polariton band gap of a 1-D chain of atoms. We analytically demonstrate that a defect embedded in the structure gives rise to the resonance transmission at the frequency of a local polariton st
Externí odkaz:
http://arxiv.org/abs/cond-mat/9903027