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 curr...

Ngày tải lên: 14/09/2015, 08:27

... 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...

Ngày tải lên: 11/09/2015, 09:57

... 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 glucosa...

Ngày tải lên: 22/03/2014, 21:20

... 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...

Ngày tải lên: 13/09/2015, 19:51

... 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 th...

Ngày tải lên: 22/07/2014, 10:21

... 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...

Ngày tải lên: 09/09/2015, 10:15

... 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 an...

Ngày tải lên: 10/09/2015, 08:39

... 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 feasib...

Ngày tải lên: 26/10/2012, 09:48

... 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 airli...

Ngày tải lên: 11/09/2013, 11:44

... 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...

Ngày tải lên: 26/11/2013, 13:21

... 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 b...

Ngày tải lên: 26/11/2013, 13:21

... 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...

Ngày tải lên: 26/11/2013, 13:22

... 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 Viet...

Ngày tải lên: 26/11/2013, 13:22

... 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,...

Ngày tải lên: 26/11/2013, 13:26

... 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 cult...

Ngày tải lên: 26/11/2013, 13:26