Recently, the intrinsic magnetic topological insulator MnBi2Te4 has attracted enormous research interest due to great success in realizing exotic quantum states, such as anomalous Hall effect (QAHE), axion state, high-Chern-number and high-temperature Chern states. One key issue this field is effectively manipulate these states control phase transitions. Here, by systematic angle-dependent tran...

The Landauer formula for dissipationless conductance lies at the heart of modern electronic transport, yet it remains without a clear microscopic basis. We analyze the Landauer formula microscopically, and give a straightforward quantum kinetic derivation for open systems. Some important experimental implications follow. These lie beyond the Landauer result as popularly received. In 1957 Rolf L...

We show, through the use of Landauer-Büttiker (LB) formalism and a tight-binding (TB) model, that transport gap twinned graphene can be tuned application uniaxial strain in direction normal to twin band. Remarkably, we find Egap bears square-root dependence on control parameter ϵx−ϵc, where ϵx is applied ϵc∼19% critical strain. interpret this as evidence criticality underlying continuous phase ...

Shot noise, originating from the discrete nature of electric charge, is generated by scattering processes. Shot-noise measurements have revealed microscopic charge dynamics in various quantum transport phenomena. In particular, beyond single-particle picture, such proved to be powerful ways investigate electron correlation liquids. Here, we review recent progress shot-noise mesoscopic physics. ...

The recent discovery of axion states in materials such as antiferromagnetic topological insulators has boosted investigations the magnetoelectric response and their promise towards realizing dissipationless electronics. In this paper, we develop a tight-binding methodology to explore emergence ${\mathrm{Bi}}_{2}{\mathrm{Se}}_{3}$ proximity magnetic on top bottom surfaces. protection surface is ...

We numerically analyze the transmission through a thin disordered wire offinite length attached to perfect leads, by making use of banded random Hamiltonian matrices. We compare the Landauer and the Thouless conductances. and find that they are proportional to each other in the diffusive regime, while in the localized regime the Landauer conductance is approximately proportional to the square o...

We study the coherent spin-polarized transport through a zigzag-edge graphene flake (ZGF), using Hubbard model in the nearest neighbor approximation within the framework of the Green function’s technique and Landauer formalism. The system considered consists of electrode/ (ZGF)/electrode, in which the electrodes are chosen to be armchair nanoribbons. The study was performed for two types of ele...

In thermodynamics, one considers thermal systems and the maximization of entropy subject to the conservation of energy. A consequence is Landauer’s erasure principle, which states that the erasure of one bit of information requires a minimum energy cost equal to kT ln(2), where T is the temperature of a thermal reservoir used in the process and k is Boltzmann’s constant. Jaynes, however, argued...