Electronic Transport in Two-Dimensional Materials

Abstract

Two-dimensional (2D) materials have captured the attention of the scientific community due to the wide range of unique properties at nanometer-scale thicknesses. While significant exploratory research in 2D materials has been achieved, the understanding of 2D electronic transport and carrier dynamics remains in a nascent stage. Furthermore, because prior review articles have provided general overviews of 2D materials or specifically focused on charge transport in graphene, here we instead highlight charge transport mechanisms in post-graphene 2D materials, with particular emphasis on transition metal dichalcogenides and black phosphorus. For these systems, we delineate the intricacies of electronic transport, including band structure control with thickness and external fields, valley polarization, scattering mechanisms, electrical contacts, and doping. In addition, electronic interactions between 2D materials are considered in the form of van der Waals heterojunctions and composite films. This review concludes with a perspective on the most promising future directions in this fast-evolving field.

Intrinsic Van Der Waals Magnetic Materials from Bulk to the 2D Limit: New Frontiers of Spintronics

“…Magnetism, records of which date back to nearly 3000 years ago, is one of the most important properties of matter. However, in strong contrast to the electrical and optical properties, which have been intensively studied and reviewed, the magnetic properties of vdW 2D materials are far less experimentally investigated, which is simply because very few 2D materials are intrinsically ferromagnetic (FM). Spin‐based electronics, termed spintronics, where the central theme is the manipulation of both the charge and spin degrees of freedom, offers great opportunities for the post–Moore's law era due to the advantages of low energy consumption, fast device operation, and high storage density .…”

Recent Advancement of Electromagnetic Interference (EMI) Shielding of Two Dimensional (2D) MXene and Graphene Aerogel Composites

“…The MXene, MAX phase, quantum dots (QDs) metal nanoparticle, oxide nanoparticle, carbon black, graphene (GN), graphite, single wall carbon nanotube (SWCNT), multiwall carbon nanotube (MWCNT), magnetic nanoparticle, metal oxides, core shell Nano materials, metal plates, organic substances, nonconductive polymers (NCP), conductive polymers (CP), and craft polymers are being utilized for EMI shielding application. Graft and nonconductive polymers are being used as a matrix and used to connect the (0, 1, 2, and 3)−dimensional materials (Table 1) [10][11][12][13][14][15][16][17][18][19]. CPs which act as fillers and help to create different structural feature meanwhile electric conductivity (EC), thermal conductivity (TC), tensile strength, and EMI shielding of the composites also improved substantially.…”

A review on graphene based transition metal oxide composites and its application towards supercapacitor electrodes

“…Scientists have been studied that graphene has the ability to conduct electricity even at zero carrier concentration because of Heisenberg uncertainty principles [11]. The electron buzzing around the carbon atom which interact with the periodic potential of graphene hexagonal lattice [12] which produce new quasi-particles that's why graphene never stop conducting. The reasons that makes graphene interesting both as individual and as composites is due to the outstanding properties such as stiffness, strength [13] and toughness [14].…”

“…At present, overwhelming attention has started to the electronic and framework features of carbon-based materials as well as graphene are now hottest topic in condensed matter physics. This is not only due to the outstanding properties of graphene regarding its mechanical stability, thermal conductivity, and 2-dimensional layers but also unusual electronic properties such as Dirac-particles with linear dispersion transport energy gap and simple absorption coefficient of light [12]. So, it could have a unique practical application due to these unique properties.…”