Theoretical study of spin currents in semiconductors

... Generating Spin Currents and Polarization Spin currents are electronic currents with a ﬁnite spin polarization, i.e comprising of unequal numbers of spin- up and spin- down carriers In pure semiconductors, ... used as spin ﬁlters in which unpolarized input currents result in spin- polarized output currents However, nonmagnetic means of generating spin currents INTRODUCTION Datta-Das device (Ch 4) Spin relaxation ... is a promising source of dissipationless spin currents In this Thesis, we theoretically study several critical aspects of SC spintronics, with a focus on spin currents in the presence of SOC These...

Theoretical study of spin dependent transport in nanoscale spintronic systems

... behind these results began to attract ever-growing interest In spintronic devices, the electron -transport is spin- dependent The theoretical study of spin- dependent transport (SDT) is to set up theoretical ... intensive interest since 1980s One of the most important aspects of the theoretical study of spintronics is to model the spin dependent transport (SDT) through these devices SDT naturally occur in spintronic ... CHAPTER Spin dependent transport in nanoscale CIP SVs 2.1 Introduction The theoretical study of spin dependent transport (SDT) in magnetic multilayers has attracted much research interest since...

Báo cáo khoa học: Theoretical study of lipid biosynthesis in wild-type Escherichia coli and in a protoplast-type L-form using elementary ﬂux mode analysis potx

... detectable in the cell wall-free mutant These ﬁndings stand in contrast to a subsequent analysis of singlegene knockout data indicating that E coli can only survive if at least L1-P-EtAmine and a lipid ... synthesis of unsaturated and saturated fatty acids, phospholipids (including cardiolipin), and lipid A It is important to study the metabolism of the glucosamine-based lipid A, because it is a major ... substrates In contrast, side modes use products of interest as substrates An example of such a side mode is an EFM that converts lipid A into lipid A (ca) Redundancy as a main characteristic of the wild-type...

Theoretical study of elementary processes in silicon germanium epitaxial growth on SI(100) and SI1 xGEx (100) surfaces

... involving in silicon and silicon- germanium epitaxial growth on Si(100) and Si1- xGex( 100) surface are investigated at atomic level using first principle density functional theory(DFT) calculations and ... transition state 12 Introduction 1.1 Silicon and germanium in semiconductor 1.1.1 Silicon and silicon- germanium devices Silicon, the second richest element existing in common stone, has attracted ... THEORETICAL STUDY OF ELEMENTARY PROCESSES IN SILICON- GERMANIUM EPITAXIAL GROWTH ON SI(100) AND SI1- XGEX( 100) SURFACES QIANG LI (B.Sc., Nankai University) A THEISI SUBMITTED FOR THE DEGREE OF...

Báo cáo nghiên cứu khoa học: "THEORETICAL STUDY OF THE SPIN DENSITY DISTRIBUTION OF THE GREEN TEA CATECHIN RADICALS" doc

... with the smallest value of max spin density (MSD) Besides, the antioxidant activity of green tea catechins depends on the number of hydroxyl groups Studying the antioxidants by calculating the ... summary, a density functional - based method has been applied to study naturally antioxidant compounds, especially green tea catechins The study has concerned the determination of the max spin density ... with the maximum spin density – MSD at every atom of radical is small At the doublet state, sum of spin densities is In this paper, we have investigated at the density functional level of the...

Study of spin dependent transport phenomena in magnetic tunneling systems

... Introduction to spintronics physics – spin- dependent transport in ferromagnets (FM) The foundation of spintronics is based on the influence of the spin of an electron on its transport properties in FM ... sensitivity of spin- dependent tunneling (in MTJs and granular films) compared to spin- dependent scattering in metallic GMR structures is because the number of carriers is smaller in tunneling systems; ... STUDY OF SPIN- DEPENDENT TRANSPORT PHENOMENA IN MAGNETIC TUNNELING SYSTEMS AJEESH MAVOLIL SAHADEVAN (BSc (Hons.), University of Delhi, India) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF...

Theoretical study of carbon based materials and their applications in nanoelectronics

... THEORETICAL STUDY OF CARBON- BASED MATERIALS AND THEIR APPLICATIONS IN NANOELECTRONICS KAI-TAK LAM A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILIOSOPHY DEPARTMENT OF ELECTRICAL AND COMPUTER ... vii in obtaining GNRs by unzipping carbon nanotubes has made the prospect of fabricating GNR -based electronic devices in large quantities more promising and hence, detailed understanding of the ... Outreach group of the Department of Electrical and Computer Engineering for the opportunities in promoting science and engineering to the secondary and pre-university students and for the exposure...

Báo cáo y học: "Comparative study of control selection in a national population -based case-control study: Estimating risk of smoking on cancer deaths in Chinese men"

... deaths TABLE Characteristics of cases and two control groups: Population- based case -control study of smoking on risk of cancer deaths among Chinese men 1989–1991 Characteristic Cases No of subjects ... sex-matched living spouse control design as an alternative control selection for a nationwide population- based case -control study is valid and feasible, and can produce highly acceptable research ... policy making when an answer is needed a short time The purpose of this study was to apply the basic principles of a population- based case -control study to assess the validation of the novel control...

IMPACT OF EMPLOYEE MOTIVATION ON CUSTOMER SATISFACTION STUDY OF AIRLINE INDUSTRY IN PAKISTAN

... competitive edge for industry This paper makes an attempt to find influence of employee motivation and its component on customer satisfaction in the airline industry of Pakistan The remaining of paper is ... nature of the airline industry, the high labor cost and union representation in the airline industry, the relationship between employees and the airline is very important Airline employees can impact ... instruments This study analyses influences of employee motivation and its four components on customer satisfaction in airline industry Employee motivation questionnaire is partially taken from...

A study of modality expressed in terms of grammaticalization and lexicalization in english and vietnamese

... grammaticalization and lexicalization denoting modality in English and Vietnamese? What are the similarities and differences between English and Vietnamese in terms of grammaticalization and lexicalization ... Lehmann (1995) [57], lexicalization and grammaticalization are processes that have much in common and are, to a certain parallel The mirror image of grammaticalization is degrammaticalization, and ... that lexicalization and grammaticalization are not at all contradictory processes The study initially suggests some ways of analyzing modal verbs in terms of lexicalization and grammaticalization; ...

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A study of pre sequences in english and vietnamese apology

... and learning English as a foreign language 1.3 RESEARCH QUESTIONS What are the typical structures of PAs in English and Vietnamese? What are the pragmatic features of PAs in English and Vietnamese? ... reminding an experience, begging, making conditions, persuading and advising PAs are pragmatically represented by explaining and notifying in high frequency in both languages PAs in English has ... FOLLOWING PAs IN ENGLISH AND VIETNAMESE Table 4.7 The apologies following PAs in English and Vietnamese In English In Vietnamese Apologize Xin l i Pardon Tha l i/ xin tha l i Excuse Tha th / xin tha th...

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A study of pre sequences in announcements in english versus vietnamese

... the PAs in English and Vietnamese? 2.1 PREVIOUS STUDIES Pre- sequences in announcements has attracted a lot of attention What are the pragmatic features of PAs in English and of linguists such as ... is aimed at paying attention to the analysis of the Nga : way of using PAs in English and Vietnamese These linguistic Th o : T t nhiên features will be examined and categorized syntactically and ... in Vietnamese After analyzing 200 collected samples of PAs in Vietnamese, we can identify a variety of structures of Vietnamese PAs, which is nearly similar to what we found in the English language,...

A study of pre sequences in invitation in english and vietnamese

... teaching and learning PIs in point out the most typical structures of Pre- sequences in invitations used in English and Vietnamese English and Vietnamese in particular as foreign languages - Analyze ... and functional features of pre- functional features of pre- invitation sequences in both languages; invitation sequences in English and Vietnamese The quantitative fourthly, the similarities and ... should introduce some similarities and differences in sequences in syntactic and functional features in English and giving an inviting act in both languages in English and Vietnamese Vietnamese...

A study of attitudinal disjuncts in english versus vietnamese

... speaker’s face 5.2 IMPLICATIONS FOR LANGUAGE LEARNING AND TEACHING With a hope of giving Vietnamese learners of English an aware of the importance of ADs in everyday conversation, the study also ... enriches pragmatic using of English ADs in the held of translation and interpretation Adverbs in general and ADs in particular Moreover, for the purpose of hedging, in English the ADs indicating the ... their personal “stance” The term Adverbial Marking Stance was defined within three major domains: Epistemic stance, Attitudinal stance, and Style stance In the reality of the increasing needs for...

A study of company names in english and in vietnamese

... investigation into common institutional terms in English and in Vietnamese focuses on linguistics and translational aspects of common names of international and national organizations in English and ... cultural features of company names in English and Vietnamese; - A study on cultural features of Vietnamese company names; - A study on cultural features of English/ American company names ... company names worldwide In the process of approaching various kinds of company names learners of English find that the syntactic and morphological features of company names are really complicated...

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