Co2MnSi Heusler alloy, due to its half metallic properties and its potential applications in Spintronic industry has attracted substantial attractions in recent years. Investigation of the interface properties of this alloy with well known semiconductors, such as GaAs, is of special interest. Hence, we studied the electronic and magnetic properties of Co2MnSi/GaAs (001) heterojunction by using Spin density functional ab-initio method. The electron core interaction was approximated by pseudo potential method and the exchange correlation energy was calculated within Generalized Gradient Approximation (GGA). We limited our calculation to MnMn-As interface that was constructed by substituting Si with Mn atom. By examining the energy band and density of state curves we found out that a few interface states exist in the minority energy gap. However, the calculated Spin Polarization is 90%, much higher than the experimental 12% value. Furthermore, the band alignments were extracted for minority and majority Spin channels.

In this paper, we have modeled and studied a graphene-based system connected to two semi-infinite channels where light (with linear and circular Polarizations) shines vertically into the system. Assuming the existence of adjustable Rashba-type Spin-orbit coupling caused by the presence of gate voltage, electron and Spin transport in the system was investigated. Non-equilibrium Green's function method and tight-binding model have been used for quantum transport calculations. According to the results, it was observed that the Spin response is different for the X and Y Polarizations, while the two circular Polarizations, i.e. right-handed and left-handed, have completely identical behavior in the production of Spin Polarization. It was also observed that, at zero bias voltage, the amount of electric current generated by light is very low while the generated Spin Polarization is significantly high. The difference in the Spin current created by different Polarizations in the system increases with the increase of Spin-orbit interaction. Considering the different signs of the Spin current for linear Polarizations of light in X and Y directions, it can be used as a Spin detector of linear Polarization of light. It was also observed that the Rashba coupling has no significant effect on the electric current produced by light. At zero bias, the light can produce a weak electric current, the direction of which completely depends on the Polarization of the incident light.

Up to now, various calculations have been done for evaluating fusion energy gain and time dependence of temperature of compressed pellets such as DT, D3He, DD, H11B and 3He3He in the absence of magnetic fields. Experimental results and their comparison with the results of simulations based on central spark ignition model and volume ignition model, prove the accuracy of our computational code. Industrial usage of fusion energy needs an increase in fusion gain and a reduction in driver energy. So that here, using volume ignition model for nuclear Spin polarized pellets (in a magnetic field), the energy gain is calculated. The comparison between results associated with the polarized and non polarized fuel, shows that Spin Polarization is an effective method for reducing the initial needed energy for ignition (up to 35%) and increasing the fusion gain.

Background and Aims: The purpose of this study was the standardization of the Social Phobia Inventory (Spin) in nonclinical Iranian sample based on their sex, academic year, native/non-native trait and college.Materials and Methods: The participants were 1743 students of Shahed University who were studying in 2010-2011 academic year and were selected by cluster sampling and completed Social Phobia Inventory (Spin). For the evaluation of validity, internal consistency and repeatability of the Spin the concordant validity, Cronbach α coefficient and test-retest methods were used, respectively. In order to analyze the data Hotelling’s T-square test, multivariate analysis of variance, and Scheffé post-hoc test were used.Results: The results showed that there was a correlation between the marks of Spin with anxiety subscales of the Anxiety subscales of the symptom checklist SCL-90-R (a<0.001, p<0.7) and Spin has internal consistency (a<0.001, p<0.94) and reproducibility/repeatability (a<0.001, p<0.96). Also, the results indicated the mean of social anxiety in female students compared to males and non-native students compared to the native ones (p<0.05) and human sciences and medical students compared to other college students (p<0.01) was significantly higher. However, there was no significant difference between the students studying different academic years (F=0.42, p<0.000).Conclusion: This study besides providing schedules of normalization for students are presented according to their academic year, sex and college and emphasis that Spin has favorable validity and reliability.

Based on the transfer-matrix method, we theoretically investigate the Spin-dependent transport properties in silicene superlattice with extrinsic Rashba Spin-orbit interaction (RSOI) in the presence of strain. Due to the RSOI coupling, Spin-inversion can be achieved. The Spin resolved conductance and Spin-inversion effect can be efficiently tuned by RSOI and strain strength. In addition, for particular values of RSOI strength, electrons with perfect Spin-inversion transmit through the silicene superlattice. It is found that the Spin conductance can be efficiently controlled by the number of barriers. As the number of barriers increases, Spin conductivities decrease. The results indicate that for the armchair direction strain, unlike the zigzag direction, the Spin Polarization can be observed and it increases with increasing the RSOI strength. The magnitude and sign of Spin Polarization can be adjusted by strain strength. The Spin Polarization in silicene superlattice for any number of barriers reaches a maximum value at 2% strain.

In this study based on Green’ s function formalism, we explore some aspects of the Spin-dependent properties of a triple-quantum-dot ring structure. In this structure, one of the quantum dots has been considered to be non-magnetic and the Rashba Spin-orbit interaction is imposed locally on this dot while the two others can be magnetic. Besides, it can be controlled the interference of electron waves in the output leads by tuning the parameters containing on-site energy of quantum dots, the magnetic flux penetrating inside the ring, the magnetic moment of dots and the Rashba Spin-orbit interaction. The optimum parameters may lead to perfect splitting and Polarization and simulate the Stern-Gerlach aparateus.

In this study, we investigate the Spin polarized current in a zigzag hexagonal phosphorene quantum dot composed of and phosphorus atoms using Green's function method. Supposing that all input electrons have Spin-up orientation, we have shown that an output current with desirable Spin Polarization may be achieved by applying an appropriate external electric field controlled by a gate voltage. Particularly, there are conditions where the Spin of all electrons can be inverted; therefore, the system can act as a Spin inverter that has special applications in Spintronics and quantum computations. Moreover, it is demonstrated that increasing the size of phosphorene quantum dot leads to the increase of polarized current.

In this research, we investigated the properties of Spin-dependent electrical transport in molecular nanostructures through a heterojunction molecular bridge of fullerene and pentacene molecule as electron acceptor and donor, coupled with two semifinal copper electrodes. For this purpose, the Spindependent Hamiltonian is determined for the single strip and by using the Green's function approach in the framework of strong correlation, we obtain the dependence of the electric transport properties of the Spin-orbit Rashba interaction, as well as the applied voltage on this structure. The results obtained from the calculations show that the Spin Polarization is up to 70% effective in controlling the Spin of incident electrons. This molecular in homogeneous nanostructure may be useful in the design of Spintronic devices.