机构

• 物理研究所 [3]
• 金属研究所 [1]
• 长春光学精密机械与物... [1]
• 半导体研究所 [1]

采集方式

• OAI收割 [6]

内容类型

• 期刊论文 [5]
• 会议论文 [1]

发表日期

• 2006 [2]
• 2005 [1]
• 2004 [1]
• 1996 [2]

学科主题

• 半导体物理 [1]

筛选

浏览/检索结果: 共6条，第1-6条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Excitonic properties of vertically aligned ZnO nanotubes under high-density excitation (EI CONFERENCE) 会议论文  OAI收割 Lu Y. M.; Liang H. W.; Shen D. Z.; Zhang Z. Z.; Zhang J. Y.; Zhao D. X.; Liu Y. C.; Fan X. W. 收藏  |  浏览/下载：13/0  |  提交时间：2013/03/25 In this paper  highly oriented and vertically arranged ZnO nanotubes are prepared on Al2O3 (0 0 0 1) substrate without employing any metal catalysts by plasma-assisted molecular beam epitaxy. The photoluminescence (PL) spectra at room temperature are studied under high excitation densities. Under lower excitation density (60 kW/cm2)  PL spectrum shows that one strong free exciton emission (FE) locates at 3.306 eV. As the excitation density increases up to 200 kW/cm2  a new emission peak (Pn) located at low-energy side of FE is attributed to the spontaneous emission due to an exciton-exciton (Ex-E x) scattering process from two ground state excitons  where one exciton is recombined by emitting a photon and the other is scattered into the excited states of n=2  3  4.... Under excitation density of 300 kW/cm 2  the stimulated emission originating from Ex-E x scattering is obtained. When the excitation density is above 580 kW/cm2  the emission from electron-hole plasma is observed in low-energy side of the P band and indicates a typical superradiation recombination processes with increasing excitation density. 2006 Elsevier B.V. All rights reserved.   Theoretical studies of the spin Hamiltonian parameters and local structures for Cs3CoX5 (X = Cl, Br) 期刊论文  OAI收割 Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy, 2006, 卷号: 63, 期号: 3, 页码: 749-753 S. Y. Wu; H. N. Dong; X. Y. Gaa 收藏  |  浏览/下载：21/0  |  提交时间：2012/04/14 crystal-fields and spin hamiltonians  Cs3CoX5 (X = Cl  electron paramagnetic resonance  Br)  (EPR)  Co2+  polarized neutron-diffraction  ensemble-representable densities  atomic  screening constants  magnetic-structure factors  superposition model  crystal-structure  optical spectra  ground-states  scf functions  cocl42  ion   Precise criterion for excited states of the lithiumlike systems 期刊论文  OAI收割 ACTA PHYSICA SINICA, 2005, 卷号: 54, 期号: 3, 页码: 1142 Chen, C; Wang, ZW; Li, JM 收藏  |  浏览/下载：18/0  |  提交时间：2013/09/24 ISOELECTRONIC SEQUENCE  FINE-STRUCTURE  ELECTRON-DENSITY  GROUND-STATES  ENERGY  1S(2)2S   Photo-capacitance response of internal tunnelling coupling in quantum-dot-imbedded heterostructures under selective photo-excitation 期刊论文  OAI收割 journal of physics-condensed matter, 2004, 卷号: 16, 期号: 36, 页码: 6519-6525 Li, GR; Zhou, X; Yang, FH; Tan, PH; Zheng, HZ; Zeng, YP 收藏  |  浏览/下载：42/0  |  提交时间：2010/03/17 ELECTRON GROUND-STATES   Total spin and antiferromagnetic correlation in the Kondo model 期刊论文  OAI收割 PHYSICAL REVIEW B, 1996, 卷号: 53, 期号: 21, 页码: 14252 Shen, SQ 收藏  |  浏览/下载：12/0  |  提交时间：2013/09/23 ELECTRON GROUND-STATES  HUBBARD-MODEL  REFLECTION POSITIVITY  PHASE-TRANSITIONS  LATTICE  RANGE  FERROMAGNETISM  SYSTEMS  CHAIN   Oscillatory total spin in ferromagnet/metal(or insulator)/ferromagnet sandwich structures 期刊论文  OAI收割 PHYSICAL REVIEW B, 1996, 卷号: 53, 期号: 21, 页码: 14298 Shen, SQ 收藏  |  浏览/下载：12/0  |  提交时间：2013/09/24 ELECTRON GROUND-STATES  HUBBARD-MODEL  MULTILAYERED STRUCTURES  MAGNETIC MULTILAYERS  EXCHANGE  FERROMAGNETISM  SUPERLATTICES  LAYERS  FE  CR