The Seebeck coefficient is an important quantity in determining the thermoelectric efficiency of a material. Phosphorene two-dimensional material with puckered structure, which makes its properties anisotropic. In this work, phosphorene nanodisk (PDisk) radius 3.1 nm connected to two zigzag nanoribbons studied, numerically, by tight-binding and non-equilibrium Green’s function (NEGF) methods pr...

We study Wigner crystallization of electron systems in phosphorene quantum dots with confinement an electrostatic origin both circular and elongated geometry. The anisotropy the effective mass allows for formation molecules laboratory frame a confined charge density that has lower symmetry than potential. find separate single-electron islands are formed two four electrons but not three trapped ...

N. Ehlen,1,* B. V. Senkovskiy,1 A. V. Fedorov,1,2,3 A. Perucchi,4 P. Di Pietro,4 A. Sanna,5 G. Profeta,6 L. Petaccia,4 and A. Grüneis1,† 1II. Physikalisches Institut, Universität zu Köln, Zülpicher Strasse 77, 50937 Köln, Germany 2IFW Dresden, P.O. Box 270116, D-01171 Dresden, Germany 3St. Petersburg State University, 198504 St. Petersburg, Russia 4Elettra Sincrotrone Trieste, Strada Statale 14...

Two-dimensional semiconductor materials with puckered structure offer a novel playground to implement nanoscale thermoelectric, electronic, and optoelectronic devices with improved functionality. Using a combination of approaches to compute the electronic and phonon band structures with Green’s function based transport techniques, we address the thermoelectric performance of phosphorene, arsene...

Two dimensional atomic sheets, such as graphene and transition metal dichalcogenides (TMDs), have been widely studied as electronic materials for flexible nanoelectronics applications due to the high flexibility enabled by their natural 2D layered crystal structure. However, with the growing need for both high speed and low power consumption in realistic applications, TMDs with relatively low m...