spin orbit coupling in multielectron atoms
Báo cáo hóa học: " Pumped double quantum dot with spin-orbit coupling" doc
... without spin- orbit coupling with corresponding eigenvalues E ns As a result, we obtain the basis set |ψn〉 where bold n incorporates the spin index For the presentation, it is convenient to introduce ... the right quantum dot Red and blue dashed lines show corresponding spin components, as marked near the lines, determined both by the spin- orbit coupling and external magnetic field As the second ... parity having the same dominating spin projection Hence, the dynamics involving all four lowest levels first of all triggers the transitions inside these pairs which not involve the spin flip and...
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Spin orbit interaction induced spin separation in platinum nanostructures
... which includes the spin- spin interactions will lead to the proper definition of the spin current It is pointed out that the spin- spin interactions provide a microscopic understanding of the spin ... scattering Soon after, Sinova el al also predicted a dissipationless spin currents in two-dimensional electron system with Rashba spin- orbit coupling [30] Interest in the intrinsic spin Hall effect extends ... study spin transport in paramagnetic metals The spin accumulation is introduced in N by the spinpolarized current injected from F1 The spin accumulation diffuses in both directions: a spin polarized...
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Cooling and cooperative coupling of single atoms in an optical cavity
... line width (intensity) Finesse Birefringent splitting Coupling strength Atomic dipole decay rate Wavelength D2 -line Atomic mass Single-atom cooperativity Detection efficiency (see Eq 1.36 in ... confining the atoms in experiments [54–56] Ideas from these proposals working in the cavity Doppler cooling regime with free atoms, however, often remain valid for trapped atoms [57], where cooling ... the cooling peak width ∆abs shrinks with an increase of the detuning ∆con This effect is detrimental to EIT-cooling of atoms that are trapped in a standing-wave lattice Here with increasing motional...
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Characterization of Spin Coated Polymers in Nano-environments as a Function of Film Thickness pot
... relaxations must involve the molecules in the surrounding environment through coupling interactions among the polymer chains These interactions depended on the amount of intermolecular and intramolecular ... demonstrated more coupling or a higher cooperativity In addition, the coupling model relates the coupling parameter to the breadth of the relaxation distribution- the higher the coupling parameter ... the surface could act as a crosslink in the polymer by restraining certain chains.11 For thin films, those less than approximately 60 nm, significant increases in Tg could occur These researchers...
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báo cáo hóa học: " Efficient spin filter using multi-terminal quantum dot with spin-orbit interaction" docx
... the spin polarization increases with an increase in the tunnel coupling It is as large as 63% in the case of Figure 4b With an increase in the tunnel coupling further, the spin polarization decreases ... AA, Kim KW: T-shaped spin filter with a ring resonator J Appl Phys 2003, 94:4001 12 Yamamoto M, Kramer B: A three-terminal spin filter induced by spin- orbit interaction in the presence of an ... single InAs/GaAs quantum dot with a spinorbit interaction Phys Rev B 2009, 79:165427 32 Pfund A, Shorubalko I, Ensslin K, Leturcq R: Dynamics of coupled spins in quantum dots with strong spin- orbit...
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Báo cáo sinh học: " Liaison amid disorder: non-native interactions may underpin long-range coupling in proteins" ppsx
... (ΔΔGint = 0) Otherwise they are coupled, wherein the native state is either stabilized (ΔΔGint < 0) or destabilized (ΔΔGint > 0) by coupling Energetic coupling may also be estimated using a bioinformatics ... the amino-terminal domain of ribosomal protein L9 (see [5] and references therein) Long-range coupling in proteins can have multiple physical origins Simple lattice protein models are an effective ... long-range coupling obtained by Noivirt-Brik et al [1] and from the HP model are robust Folding cooperativity may dampen but cannot eliminate non-native interactions Contact interactions such as that in...
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CHARGE AND SPIN TRANSPORT STUDIES IN GRAPHENE AND BLACK PHOSPHORUS
... weak intrinsic spin- orbit coupling and hence, the spin relaxation mechanism in carbon derivatives due to spin- orbit interaction is also weak32 Theoretical investigations have shown that the spin ... their weak intrinsic spin- orbit interaction strength as compared to metallic systems Persisting efforts have been placed to continuously seek the ideal system in which spin- orbit coupling can be ... CHAPTER 1.1 INTRODUCTION SPINTRONICS Spin electronics3 or simply spintronics is a fast evolving technology that utilizes the intrinsic spin property of electron and its magnetic moment Spintronics...
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Spin transport studies in graphene
... 2.6.2 Spin- orbit coupling in solids 2.6.3 Spin dependent scattering due to spin- orbit coupling 2.6.3.1 Intrinsic spin- orbit coupling: Dresselhaus and Rashba spin- orbit interaction ... being a light element (Z = 6), the intrinsic spin- orbit coupling (∝ Z4 ) is weak and hence the dominant spin dephasing mechanism due to spin- orbit coupling is also weak [39] This allows fora spin ... non-equilibrium spin populations In a broader sense, spintronics is the study of spin phenomena like spin- orbit, hyperfine and/or exchange interactions Such insights into spin interactions allow...
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Theoretical study of spin dependent transport in nanoscale spintronic systems
... respectively 16 INTRODUCTION 1.1.5.3 Spin relaxation Spin relaxation is the process through which spin relaxes towards equilibrium The relaxing processes usually involve spin- orbit coupling which provides ... with the spin of holes Hyperfine interaction For the spin states localized on donors or in quantum dots, hyperfine interactions with surrounding nuclear spins is the dominating mechanism of spin decoherence ... four principal mechanisms of spin relaxation in semiconductors [12] Elliott−Yafet mechanism In this mechanism, the spin relaxes by momentum scattering Bloch states with spin- orbit coupling are...
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Spin transport study in spintronic nanodevices
... dependent drift-diffuion Spin diffusion length Spin- dependent tunneling Spin injection Spin- polarized resonant tunneling Spreading resistance Spin valve Two-channel model Tunneling Magnetoresistance ... resistances becomes increasingly more divergent with U Right axis: Tunneling spin injection ratio γ increases with U due to the increasingly spin asymmetric resistances Inset: Spin- up and down resistances ... current in which electrons with one type of spin (majority spin) are significantly more than the other type of spin (minority spin) , hence there is an imbalance between spin- up and spin- down electrons...
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Optical time resolved spin dynamics in III-V semiconductor quantum wells
... and spin- orbit coupling lift the spin degeneracy [13] for electron states of finite wave vector (k) The spin- splitting can be represented by an effective magnetic field vector acting on the spin ... relaxation in InGaAs/InP was due the native interface asymmetry present in the structure or if spin relaxation is generally fast in InGaAs wells (see chapter 5) Finally, quantum beating of exciton spin ... have been distinguished by measuring electron spin relaxation in InGaAs/GaAs quantum wells The long spin lifetime implicates the NIA as the cause of the fast relaxation in InGaAs/InP Finally, the...
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Tài liệu Đề tài: “SPIN and specifying and verifying in concurrent systems, reactive systems” docx
... định xác minh hệ thống đồng thời SPIN and specifying and verifying of concurrent systems and reactive systems 2.1.Quy định hệ thống PROMELA ngôn ngữ đầu vào SPIN, dùng để quy đinh xác minh hệ thống ... receiveRequest() if sender = given then if waiting = then given := else SPIN and specifying and verifying of concurrent systems and reactive systems given := waiting; waiting := sendAnswer(given) endif elsif ... minh hệ thống 17 III Kết luận 17 IV Các tài liệu tham khảo 18 SPIN and specifying and verifying of concurrent systems and reactive systems I Khái niệm SPIN...
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Tài liệu Báo cáo khoa học: Synchronization of Ca2+ oscillations: a capacitative (AC) electrical coupling model in neuroepithelium pptx
... interacts with F-actin via b-catenin and a-catenin; b-catenin binds to cadherin and a-catenin, which in turn interacts with F-actin (Fig 3A) [24] Thus b-catenin plays a pivotal role in the regulation ... synchronous increases in intracellular [Ca2+], as described below Synchronous increases in intracellular [Ca2+] and disassembly of cadherin–catenin complexes The cytoplasmic domain of cadherin interacts ... protein tyrosine kinase proline-rich tyrosine kinase (Pyk2) [26,27], or is indirectly tyrosinephosphorylated by Src family kinase, which can be activated by Pyk2 [28] It is likely that tyrosine...
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Tài liệu Báo cáo Y học: Steady-state kinetics of the glutaminase reaction of CTP synthase from Lactococcus lactis The role of the allosteric activator GTP in coupling between glutamine hydrolysis and CTP synthesis potx
... substrate injection was calculated from Vinj ẵEj ẳ ẵEj1 exp 2ị Vcell 4ị % Inhibition ẳ 100% In Kn ỵ In I 7ị where KI is the concentration of inhibitor that gives rise to 50% inhibition by the inhibitor ... synthesis A mechanism in which GTP only acts to increase the rate of hydrolysis of glutamine has some aws in explaining the inhibition of DON-labeled enzyme when assayed with NH4Cl as amino donor Therefore, ... the concentration of the injectant in the syringe Analysis of initial velocity data Analysis of saturation curves was performed by nonlinear regression using 5ị where kcat,inh is the turnover number...
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Báo cáo khoa học: Transmembrane helix 12 plays a pivotal role in coupling energy provision and drug binding in ABCB1 pot
... labelling intensity observed with the single-cysteine-containing isoforms Obtaining full labelling and its accurate quantitation are difficult to achieve in practice, resulting in occasional instances ... were examined by introducing cysteines at distinct positions in TM12 and assessing their accessibility to covalent modification with thiol-reactive probes In order to determine how changes in the ... prominent role in the coupling process in ABCB1 [25–28] A number of mutations in TM6 caused alterations in drug-stimulated ATP hydrolysis, irrespective of whether they contributed to drug binding...
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Báo cáo khoa học: Calcite-specific coupling protein in barnacle underwater cement docx
... by measuring the decrease in protein amount remaining in the solution Adsorption to (A) calcite in ASW, (B) glass in ASW, (C) benzoguanamineformaldehyde resin in ASW, (D) zinc oxide in ASW, (E) ... simple recombinant protein cannot be obtained The present study represents the rst report based on a recombinant protein retaining almost the same structure as that of the native protein in the study ... protein in the primary cement Thereafter, we expressed the recombinant form of the protein in bacteria in a soluble form under physiological conditions, and conrmed that the recombinant protein...
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Báo cáo Y học: Role of conserved residues within helices IV and VIII of the oxaloacetate decarboxylase b subunit in the energy coupling mechanism of the Na+ pump ppt
... wildtype Increasing Na+ affinities at increasing pH and decreasing Na+ concentrations for half maximal inhibition with increasing pH indicates improved Na+ binding at elevated pH values The S382D ... acid-labile compound In this communication we performed detailed kinetic analyses of various mutants in OadB, allowing us to propose that S382 acts as a Na+ binding ligand but is not involved in the proton ... resulted in the formation of colonies, whereas E coli EP432 harbouring pSK could not sustain growth Analytical procedures The protein content of samples was determined according to the bicinchoninic...
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Báo cáo khoa học: The sulfur atoms of the substrate CoA and the catalytic cysteine are required for a productive mode of substrate binding in bacterial biosynthetic thiolase, a thioester-dependent enzyme doc
... obtained, as discussed in detail below, indicate a crucial role for sulfur–sulfur interactions in defining the catalytically competent binding mode of CoA in the active site The pantetheine binding ... N-terminal domain (with the catalytic cysteine) and the C-terminal domain The third domain, referred to as the loop domain, protrudes out of the N-terminal domain The loop domain covers the catalytic ... innermost peptide bond, near the catalytic site) The atoms shaping the binding environment of the terminal sulfur atom of CoA are listed in Table and shown in Fig Apart from the sulfur-containing...
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