We present a theory for the quasiparticle band structure in the antiferromagnetic phase of a Kondo-lattice Hamiltonian with ferromagnetic Hund’s rule exchange between conduction electrons and localized spins and antiferromagnetic superexchange between localized spins. The quantum mechanical...

We investigate field effect transistors (FETs) based on semiconducting armchair-edged silicene nanoribbons (ASiNRs) by using ab initio quantum transport calculations. These FETs have high performance with an I <Subscript>on</Subscript>/I <Subscript>off</Subscript> ratio of over 10<Superscript>6</Superscript> and a subthreshold swing as small as 90 mV/decade....</superscript></subscript></subscript>

The electronic structures and magnetic properties in zinc-blende structure ZnS doped with nonmagnetic noble metal palladium have been investigated by means of density functional theory (DFT) calculations employing the generalised gradient approximation (GGA) and the GGA plus Hubbard U (GGA + U)....

We numerically study the thermoelectric and thermal transport in ABA-stacked trilayer graphene in the presence of a strong magnetic field and disorder. We find that the thermoelectric conductivities display different asymptotic behaviors, depending on the ratio between the temperature and the...

The magnetic and magnetocaloric properties in ferrimagnetic DyCo<Subscript>4</Subscript>Al alloy are investigated in the vicinity of compensation temperature. A compensation temperature closed to room temperature is observed due to the spin-offset. On both sides of compensation temperature, the magnetization presents...</subscript>

A microscopic theory of superconductivity in the extended Hubbard model which takes into account the intersite Coulomb repulsion and electron-phonon interaction is developed in the limit of strong correlations. The Dyson equation for normal and pair Green functions expressed in terms of the...

The relations for the Seebeck coefficient in a semiconductor with the isotropic density of states given by a power function are introduced within the scope of a semi-analytical model, which is based on the theoretical relations given by the foundations of the semiconductor physics as well as on...

We theoretically investigate the thermopower of silicene systems in an external electric field perpendicular to the silicene sheet. In the absence of the field, we estimate that the thermopower of pure silicene is of order ∼80 μV/K. When a finite field is applied, a comparatively big band gap...

Impurity H is inclined to be trapped by some defects with more space such as vacancy and grain boundary when it dissolves in a metal. Inversely, H can also enhance formation of large amount of vacancies even if there are few vacancies in intrinsic metals initially. Using first-principles...

Extensive studies on the temperature (T) dependent exchange bias effect were carried out in polycrystalline BiFeO<Subscript>3</Subscript>(BFO)/NiFe and BFO/Co bilayers. In contrast to single-crystalline BFO/ferromagnet (FM) bilayers, sharp increase of the exchange bias field (H <Subscript> E </Subscript>) below 50 K were clearly observed...</subscript></subscript>