spin spin splitting in alkenes

... the fitting curves (b) Pump power dependence of spin splitting for T = 1.5 K and B = T The solid line presents the average value of spin splitting of all pump powers (c) The spin splitting as ... the combined effect of BIA and SIA [14] It is clear that the term b6c6c results in the aniso41,2 tropic spin splitting at B > As expected in Equation 2, the measured spin splitting is linearly ... of spin splitting at B > in an asymmetric QW Additionally, the Rashba term also gives rise to a nontrivial splitting in the presence of a magnetic field, but the splitting is isotropic [14] In...

Ngày tải lên: 21/06/2014, 00:20

... 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 ... electron, causing a motional slowing of the rate of spin depolarisation Spin dynamics of electrons in Zincblende crystals are thus heavily perturbed by conduction band spin- splittings caused by inversion ... 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...

Ngày tải lên: 06/04/2013, 10:57

... results indicate that the final polarization from QD emission cannot be solely attributed to the spinsplitting of the QD states under magnetic field and it depends on the spin polarization of the injected ... Vdovin EE, Levin A, Patanè A, Eaves L, Main PC, Khanin YN, Dubrovskii YV, Henini M, Hill G: Imaging the electron wave function in self-assembled quantum dots Science 2000, 290:122 10 Fiederling ... LW: Injection and detection of a spin- polarized current in a light-emitting diode Nature 1999, 402:787 11 Ohno Y, Young DK, Beschoten B, Matsukura F, Ohno H, Awschalom DD: Electrical spin injection...

Ngày tải lên: 21/06/2014, 05:20

... In a very simple approach, in a QW can be approximated Figure Power-dependence spin diffusion coefficient and spin lifetime (a) Spin diffusion coefficient Ds versus pump power, i.e., spin ... Eberl K: Spin transport in GaAs Appl Phys Lett 1998, 73:1580 Liu BL, Senes M, Couderc S, Bobo JF, Marie X, Amanda T, Fontaine C, Arnoult A: Optical and electrical spin injection in spin- LEDs Physica ... rate of spin grating as a function of q2 for two excitation powers: and 18mW (b) Kerr rotation dynamics obtained from homogenous spin excitation et al observed that Ds increases by increasing the...

Ngày tải lên: 21/06/2014, 05:20

... the residual exchange interaction between the electron spin and rapidly relaxing spin of the hole Since gk and g\ are close in magnitude, the contribution from a difference in the spread of their ... directed along the spin of the hole (parallel to the longitudinal axis, here k) acting on the electron spin The speed and direction of the electron -spin precession are determined by the total ... Res Lett (2009) 4:588–591 values varying in time in a random way, and as a result, a fluctuating component arises in Htot acting on the electron spin The fluctuating component broadens the frequency...

Ngày tải lên: 22/06/2014, 00:20

... if the spin of electron is measured under magnetic field, only two distinct values can be obtained: spin- up (ħ/2) and spin- down (-ħ/2) This interesting finding triggered the area of spintronics ... for spin- up and spin- down charges The spin polarization in ferromagnetic material can be described as   (2.2) and the net spin current is  Since the net charge current is , the spin- up and spin ... Electrical spin transport 2.1.1 Electrical spin Injection and detection The electrical spin injection relies on the creation of a non-equilibrium population of the spin- up and spin- down currents Since...

Ngày tải lên: 09/09/2015, 11:18

... (GMR) spin- valves with perpendicular anisotropy have recently attracted dramatically increased interest because of their applications in spintronics devices, such as in spin transfer switching ... back the spins in FM layer to original position as shown in Fig 2.2(b), because the ferromagnetic coupling in the FM-AFM interface helps the spins of FM layer to rotate back as shown in Fig 2.2 ... the blocking temperature Since the localized uncompensated AFM spins are coupled to FM spins at the interface, they exert a strong torque on these FM spins, tending to keep them aligned in the...

Ngày tải lên: 10/09/2015, 15:53

... 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 ... 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 ... 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...

Ngày tải lên: 14/09/2015, 08:25

... relaxation (DP) Current induced spin polarization Spin precession (Ch 4,5) Zitterbewegung (Ch 5) Spin polarization (Ch 3) Spin- orbit coupling Spin transverse force (Ch 5) Spin- dependent transport ... 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 ... was proposed in Ref [84] 2.2.2 Spin Filters A spin filter is a device which preferentially filters one spin species (spin- up, say) over the other An intuitive way to implement spin filtering is through...

Ngày tải lên: 14/09/2015, 08:27

... to a certain extent explain our difficulty in obtaining markers linked to splitting Although ultimately we aimed at identifying a wood splitting marker that would work in basically all E grandis ... possibly linked to either high or low splitting The fragments that together described the variation in the splitting index value were combined in a regression equation that may be used to predict splitting ... markers linked to the gene/s coding for splitting/ non -splitting This technique has proved to be very successful in populations resulting from a single cross that segregate for the trait of interest...

Ngày tải lên: 08/08/2014, 14:20

... range of up to 10% within a zone of less than ± mm can be neglected Although this error might be increased in principal by connecting two opposing beams (knowing that the machine's isocenter is a ... moving tumors individually, so that adding a general extra-margin for tumor motion (internal margin) is not necessary Furthermore, we consider a margin for microscopic spread from GTV to the clinical ... taken into account by a pencil beam algorithm Dose constraints for the spinal cord were set at 45 Gy, V20 (volume receiving >20 Gy) for a single lung at 50%, V25 for both lungs considered as a single...

Ngày tải lên: 09/08/2014, 10:20

Ngày tải lên: 22/06/2014, 00:20

... 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...

Ngày tải lên: 15/02/2014, 16:20

... 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 ... 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 ... the four stages of deposition, spin- up, spin- off, and evaporation (Figure 2.31) By taking both the force of spinning and the concentration-controlled evaporation into account, these researchers...

Ngày tải lên: 23/03/2014, 01:20

Ngày tải lên: 04/06/2014, 14:41

... LL: Spin- polarized current and spin accumulation in a three-terminal two quantum dots ring Appl Phys Lett 2008, 92:172104 Chi F, Zheng J, Sun LL: Spin accumulation and pure spin current in a ... polarization of the leads is fixed, both spin- up and spin- down line-width functions will be enhanced with increasing tLR, resulting in increased total current as shown in Figure 4(a) For the antiparallel ... three-terminal quantum dot ring with Rashba spin- orbit effect J Appl Phys 2008, 104:043707 Sun QF, Xie XC: Bias-controllable intrinsic spin polarization in a quantum dot: Proposed scheme based on spin- orbit...

Ngày tải lên: 21/06/2014, 04:20

... the Pinning Lemma and the fact that in each Si we assign the coupling constants independently The remaining obstacle in proving the full Conjecture is that because of dependancies the Pinning ... following property: there is a minimum T -join r in C(n, k) and a minimum (T ∪ {[0, n + 1], [0, −n − 1]})-join s in C (n, k) so that a path P from [0, n + 1] to [0, −n − 1] in r∆s contains an ... i.e there is a minimum T -join r in C(n, k) and a minimum (T ∪ {[0, n + 1], [0, −n − 1]})-join s in C (n, k) such that path P from [0, n + 1] to [0, −n − 1] in r∆s contains an edge in distance at...

Ngày tải lên: 07/08/2014, 08:20

... 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 ... 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 ... we studied the spin transport properties under the enhancement of spin orbit coupling in this system We have developed a new spin injection technique based on spin Hall Effect in modified graphene...

Ngày tải lên: 09/09/2015, 08:14

... 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 ... tunneling probability is spin- as well as energy-independent, and hence the symmetrybased spin filtering is ignored which became very important in crystalline and textured barriers later The spin ... the bands of same spin orientation - Tunneling probability |M|2 is spin- independent so that only the DOS determined the TMR One of the limitations – or rather, a missing link in this model – is...

Ngày tải lên: 09/09/2015, 10:15

... of spin- spin interaction, spin chains can be classified into three types: Heisenberg spin chain, XY spin chain and Ising spin chain In the following, we will describe each of the spin chains in ... states in spin chains In addition to these applications, we have investigated the dynamics of spin chains for gaining insights into intriguing properties of quantum many-body systems Along this line, ... second spin can then cause the flipping of the third spin, and so on, thus triggering a wave of spin excitation in the spin chain and realizing quantum signal amplification The fruitful interplay...

Ngày tải lên: 09/09/2015, 18:51