Pronounced minority spin band gaps were found in these alloys and while majority spins are metallic, minority spins undergo hole-like dispersion near the Fermi level. The spin injection characteristics are examined as a function of photon energy, magnetic field, applied bias, external optical efficiency and temperature. Further, the Heusler alloys Co2TiSn and Co2CrAl are investigated through ab initio electronic structure calculations as potentially highly polarised spin injectors. This work is an investigation into spin injection from magnetic thin film contacts into (100) GaAs/InGaAs quantum wells in spin light emitting diodes (spin LEDs). While spin injection is observed from both Heusler alloy and Fe injectors, Fe is a more efficient spin injector and gives room temperature results. The injection of spin polarised electrons into semiconductors is a fundamental challenge in the emergent field of spin electronics. This structure is relevant to many quantum dot device layers. The bias dependent spin injection shows a decrease at higher voltages due to hot electron spin transport in the semiconductor and shows similar trends for both types of spin injector.
The Physics of Electron Spin Polarization in Magnetic Metals and the Injection of Spin Polarized Electrons in Ferromagnetic/Semiconductor Systems Spin Injection from Magnetic Thin Films into InGaAs Quantum Wells.
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Книга по Требованию
Dissociation of Benzene Molecule in a Strong Laser...
M. E. Sukharev, Ge eral Physics I s i u e of RAS Dissocia io of be ze e molecule i a s ro g low-freque cy li early polarized laser field is co sidered heore ically u der he co di io s of rece experime s. A alogy wi h he dissocia io of dia omic molecules has bee fou d. he dissocia io probabili y of be ze e molecule has bee derived as a fu c io of ime. he hree-pho o dissocia e process is show o be realized i experime s. I roduc io . he umber of ar icles devo ed o he i erac io of molecules wi h a s ro g laser field i creased co siderably i rece years. he mai fea ures of i erac io be wee dia omic molecules a d a laser radia io were co sidered i a grea umber of experime al papers. Classical a d qua um i ves iga io s of spa ial alig me of dia omic molecules a d heir molecular io s i a s ro g laser field, as well as io iza io a d dissocia io of hese molecules a d heir molecular io s accou for physical pic ures of all processes. However, whe co sideri g complex orga ic molecules, we observe physical phe ome a o be richer, a d hey are o horoughly i ves iga ed. Mos of resul s ob ai ed for dia omic molecules ca be ge eralized o he mul i-a omic molecules. his shor paper co ai s he resul s of heore ical deriva io s for dissocia io of be ze e molecule C6H6 i he field of li early polarized i:Sapphire laser.
|Study of Magnetic Structure of Multilayers. Observing non-collinear coupling between ferromagnetic layers in thin films Книга по Требованию Dmitry S. |
The signs of the coupling constants have been determined from the neutron reflectometry data using minimum energy model for the relative orientations of magnetization.
|Evaluation of sputter-deposited MgO-based tunneling diodes for silicon spintronics Spin Injection in Silicon. Книга по Требованию Thomas U. |
The main advantage of this approach is the merge of information processing and storage in one device, employing a magneto-current effect that depends on the relative magnetization of the injector and detector electrode.
|Metal-containing Hydrogenated Amorphous Carbon Thin Films. -from Random Structures to Self-assembled, Alternating Nano-layered Structures Книга по Требованию Wan-Yu W. |
The discovery and the explanation of unprecedented self-assembled, alternating nano-layered structures are addressed. a- C: H/Me thin films were synthesized using one single target, a rotating but not revolving substrate, and constant feed gas compositions in a conventional reactive sputter deposition chamber.
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This book presents an introduction to thin-film growth mechanics, followed by a review of the Pt-on-Au system.
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Moreover, the epitaxiality permits the measurement of the films' properties in two perpendicular directions, a direct inset of the anisotropy. La2NiO4 is the n=1 member of the Lan+1NinO3n+1 Ruddlesden-Popper family. We have also attempted to deposit c-axis oriented films of the n=2, 3 and ? members and studied the variation of their transport properties with n. The techniques and results presented in this book will result very useful to a wide range of researchers working in the fields of oxide thin films, K2NiF4-type compounds, fundamental study of transport properties in oxides and solids in general and in the possible applications of the material. Recently there has been a great interest in the study of La2NiO4 due to its MIEC properties, which make it suitable in electrochemical devices, such as cathode in ITSOFCs, permeation membranes or gas sensors. This work is focused on the study, from a fundamental point of view, of epitaxial c-axis oriented La2NiO4 thin films deposited by PI-MOCVD on different substrates, to achieve a better comprehension of the microstructural characteristics, their variation with strain and their influence in the high temperature transport properties.
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It is found that the grain size/roughness, dielectric constant, loss, tunability and figure of merit are affected by the Mn doping level.
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A possible mechanism is presented.
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Details of the experimental setups for measurement of thermopower using integral and differential methods and the fabrication and performance studies of transparent thin film thermocouples also form content of this monograph.
|Metal Induced Crystallization and Polysilicon Thin Film Transistors. Novel technologies of crystallization and post-annealing Книга по Требованию Bo Z. |
A few technologies are presented in this monograph, which improve the quality of MIC polysilicon film and hence the performance of TFTs built on. Amelioration of MIC processes has been made to produce high performance polysilicon TFTs using solution based MIC (SMIC) and defined-grain MIC (DG-MIC) methods.
|Modeling and Fabrication of a Thin Film Piezeoelectric Energy Scavenging Device Книга по Требованию |
This work focused on addressing the need for the development of a renewable power source for wireless sensor nodes via energy scavenging using thin film piezoelectrics.
|TEMPERATURE DEPENDENCE OF ACTUATED MEMBRANES FOR RF MEMS SWITCHES. Applications for thin film materials in a cryogenic environment Книга по Требованию Julien N. |
Although, properties of bulk materials might be well characterized, thin-film properties are considerably different from those of the bulk.
|Thin-film Optics Книга по Требованию Lambert M. S. |
Layers at this scale can have remarkable reflective properties due to light wave interference and the difference in refractive index between the layers, the air, and the substrate.
|Design and Fabrication Back Reflectors for Amorphous Silicon Based Thin Film Solar Cells. Книга по Требованию Xiesen Y. |
|Terahertz Plasmon Modes in Grating Coupled Double Quantum Well Field Effect Transistors Plasmon Modes for Terahertz Detection. Книга по Требованию Xomalin P. |
We observe sharply resonant, voltage tuned THz photoconductivity that we can semi-quantitatively model by two dimensional standing plasma oscillations under the grating gate.
|Into Thin Air: A Personal Account of the Mt. Everest Disaster Random House USA Jon K. |
When the storm finally passed, five of them would be dead, and the sixth so horribly frostbitten that his right hand would have to be amputated. "Into Thin Air" is the definitive account of the deadliest season in the history of Everest by the acclaimed journalist and author of the bestseller "Into the Wild".
|A study using Time Resolved Photo? Magnetization Dynamics in Spin Valves. Emission Electron Microscopy in combination with X? ray Circular Dichroism (TR-PEEM-XMCD) Книга по Требованию Frederik W. |
At the same time advanced magnetic recording schemes push the magnetic switching time into the gyromagnetic regime.
|Organic Peracid Etches. Novel chromium-free etching solutions for the delineation of crystalline defects in thin silicon films Книга по Требованию Daniel G.P. |
A new class of chromium free etching solutions containing organic peracids was developed.
|Electron spins in lateral quantum dots Книга по Требованию Laurens W.v.B. |
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He' s Just Not That Into You was directed by Ken Kwapis, and produced by Drew Barrymore' s production company, Flower Films, with Barrymore serving as an executive producer. He' s Just Not That Into You is a 2009 American romantic comedy film, based on the self-help book of the same name by Greg Behrendt and Liz Tuccillo, which in turn was inspired by a line of dialogue in Sex and the City. The film features an ensemble cast that includes Ben Affleck, Jennifer Aniston, Drew Barrymore, Scarlett Johansson, Justin Long, Jennifer Connelly, Ginnifer Goodwin, Kevin Connolly, and Bradley Cooper.
|Analysis of English subtitles produced for a Taiwanese movie. Examined the translation of English film dialogues into Mandarin subtitles unsing data gathered from a Taiwanese movie entitled Cape No. 7 Книга по Требованию Ching-Ting L. |
Therefore, this book is trying to explore some interesting findings by examining the translation of Taiwanese Mandarin dialogues into English subtitles by gathering the data of a Taiwanese comedy- Cape No. 7. Cape No. 7 has involved with a lot of local dialect.