摘要：
We report on the theoretical study of the interaction of the quantum dot (QD) exciton with the photon waveguide models in a semiconductor microcavity. The InAs/GaAs self-assembled QD exciton energies are calculated in a microcavity. The calculated results reveal that the electromagnetic field reduces the exciton energies in a semiconductor microcavity. The effect of the electromagnetic field decreases as the radius of the QD increases. Our calculated results are useful for designing and fabricating photoelectron devices.
作者机构：
[Zhou, GH] Hunan Normal Univ, Dept Phys, Changsha 410081, Peoples R China.;Yiyang Teachers Coll, Dept Phys, Yiyang 413049, Peoples R China.;Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110015, Peoples R China.
通讯机构：
[Zhou, GH] H;Hunan Normal Univ, Dept Phys, Changsha 410081, Peoples R China.
摘要：
We numerically study the intrinsic localized vibrational modes in a diatomic chain with different masses and alternating force constants between nearest neighbors. This model simulates a row of atoms in the [111] direction of sphalerite-structure crystal. We found that the harmonic and quartic anharmonic terms in the nearest-neighbor interaction potential produce the intrinsic localized modes with frequencies above the optical branch or in the gap of the linear spectrum, the distribution patterns of atom amplitudes are asymmetry with a form of quasi-even or quasi-odd-parity, and the inclusion of cubic term in the potential lowers the frequencies of the modes and introduces static displacements for the atoms.
作者机构：
[Hai, WH] Hunan Normal Univ, Dept Phys, Changsha 410081, Peoples R China.;Chinese Acad Sci, Wuhan Inst Phys & Math, Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China.;Yiyang Teachers Coll, Dept Phys, Yiyang 413049, Hunan Province, Peoples R China.
通讯机构：
[Hai, WH] H;Hunan Normal Univ, Dept Phys, Changsha 410081, Peoples R China.
关键词：
Josephson effect;control;chaos;stability
摘要：
The models of rf-driven Josephson junctions are investigated as the perturbed systems. It is shown that the heteroclinic orbits corrected by perturbations are stable if some relations between the initial constants and system parameters are satisfied, which leads to Melnikov chaos: To stabilize chaos one has to make the control parameters fitting the relations. The result is compared with the previous numerical work and a good agreement is found.
摘要：
Based on not only the ideas of phenomenological investigations about the internal friction of crystalline materials but also the studies on the internal friction laws of noncrystalline materials during structural relaxation processes in recent years, the method of making relaxation cell is put out. In the method, traditional mechanics parameter model and two-level model are unified, so phenomenological studies on the internal friction of noncrystalline materials during structural relaxation processes are made and a new relaxation law is formed.
