The experimental observation of the Dirac fermion states in $\beta_{12}$-borophene sheets and discovery their novel topological properties have made them a promising candidate for spintronic applications. Here, by combining non-equilibrium Green's function (NEGF) tight-binding (TB) approximation, we study charge spin transport through nanoribbon (BNR) with different edge shapes. We show when BN...

Most common implementations of the NEGF approach are done using the Finite-Difference Method (FDM) on uniform grids. This discretization scheme allows one to study many types of planar devices, such as MOSFETs, superlattices and planar heterojunctions. Within this paradigm, carrier scattering can be included through the selfenergy approach, almost always under the assumption of local interactio...

The understanding and modeling of heat transport across nanometer subnanometer gaps, where the distinction between thermal radiation conduction becomes blurred, remains an open question. In this work, we present a three-dimensional atomistic simulation framework by combining molecular dynamics (MD) phonon nonequilibrium Green's function (NEGF) methods. relaxed atomic configuration interaction f...

As device dimensions shrink to the order of nanometres, quantum effects such as confinement and tunnelling start to play a significant role. Quantum confinement shifts the threshold voltage, and the leakage increases due to band-toband, source-to-drain and gate tunnelling. Such effects will have a strong impact on the performance of nanowire transistors actively researched at present as a possi...

Carbon-based materials are the promising candidates for design of multifunctional spintronic devices, owing to their fascinating inherent attributes such as ballistic transport nature, long spin coherence time, etc. Here, we report spin-dependent electron properties a trans-polyacetylene channel sandwiched between two semi-infinite hydrogen-passivated zigzag graphene nanoribbon (ZGNR) electrode...

The space-time Greens functions for 3-D poststack and 3-D prestack migration in a homogeneous medium are derived under the far-field approximation. These Greens functions can be used to practically compute synthetic migrated images. Examples are given for the recording footprint noise associated with a point scatterer and a meandering river channel. The Greens functions also provide fundamental...

I give a simple general prescription for computing the spectral functions of local operators in the Tomonaga-Luttinger model from the space-time correlation functions. The method is significantly simpler than directly transforming the space-time Greens function and allows a physical interpretation of the singularities encountered in the spectral function. 71.20.-b, 71.27.+a, 79.60.-i Typeset us...

Superintendents know that management of putting greens is an art. Greens are often made of high-porosity sand that does not retain water or nutrients very effectively. Also, putting green grasses are cut extremely short, which does not allow a deep root system to develop and take up nutrients from deep in the soil profile. Therefore, putting greens require frequent irrigation and fertilizer app...

Photogalvanic effect (PGE) occurs in materials with non-centrosymmetric structures when irradiated by linearly or circularly polarized light. Here, using non-equilibrium Green’s function combined density functional theory (NEGF-DFT), we investigated the linear photogalvanic (LPGE) monolayers of group-V elements (As, Sb, and Bi) first-principles calculations. First, designing a two-probe structu...

In last few years, graphene nanoribbon based sensorshave challenging research significance due to large surface -to-volume ratio of and also high sensitivity fast response towards toxic gases[1].Carbon monoxide (CO) is one the dangerousgas released from factories vehicle emissions[2].In present research, Non-Equilibrium Green's function (NEGF) formalism Density Functional Theory (DFT) are used ...