Localization of light is the photon analog of electron localization in disordered lattices, for whose discovery Anderson received the Nobel prize in 1977. The question about its existence in open three-dimensional materials has eluded an experimental and
We study the Anderson localization in a potential landscape with long-range power-law correlations in one dimension. We find that, for energies E close to the band edge of the unperturbed energy band, the presence of correlations makes the states more strongly localized, compared with the ...
the PBG through its coupling to the atomic transition near the photonic band edge (the “near” transition) via the Λ configuration. As a result of this coupling, spontaneous emission through the “far” transition can be used as a probe to measure the strength of the effects of the PBG ...
Using the self-consistent Born approximation, the localization phase diagram in the near band edge region is investigated numerically for an exponential correlation. It is found that the phase diagram is strongly influenced by the presence of statistical correlations. In the long-wavelength limit, a...
We present a model calculation for the dependence of the near-band-edge photoluminescence (NBEPL) on the power of the exciting laser light. Our model explains all features of the NBEPL power dependence that were previously observed in experiment: (i) the variation of the excitonic photoluminescen...
For example, recently Xiaomi launched Mi Band 5 wrist band, which supports NFC based payments and transactions through the band. Currently, in the time of COVID-19 pandemic, Silicon Craft Technology PLC (SICT) has launched an NFC enabled wearable band to track COVID-19 patients and those ...
aAnalytical expressions for the effective masses near and far away from the band edges and the bandedge wave functions are derived within the framework of the kp method. 分析表示为有效质量近和很远从带缘和bandedge波函数获得在k p方法框架里。[translate]...
8a). The two laser beams are combined by a dichroic mirror and guided into a line fiber bundle that forms a rectangular light band on the mouse’s abdominal side. The PA signals are detected by a linear ultrasonic transducer array (L7-4, Philips) with a 5 MHz central frequency, more...
Thin films of nickel-doped zinc oxide (Zn1-NiO) show redshift in the optical band gap and in the near band edge (NBE) emission of the photoluminescence spectra. The Zn1-NiO thin films obtained by sol-gel spin coating method show narrowing of the band gap from 3.23 to 3.00 eV as the...
The first-principles band structure calculations are carried out to interpret the spectral fine structure of the near-edge X-ray absorption fine structure (NEXAFS) spectrum of PdO at the O K-edge by the full-potential augmented plane wave plus local orbitals (APW+lo) method. The observed NEXAF...