129 citations · 303 across the 11 of their papers we have counts for
11 papers
Hierarchically nanostructured thermoelectric materials: Challenges and opportunities for improved power factors
Neophytos Neophytou, Vassilios Vargiamidis, Samuel Foster +9
The field of thermoelectric materials has undergone a revolutionary transformation over the last couple of decades as a result of the ability to nanostructure and synthesize myriad…
Theoretical model for the Seebeck coefficient in superlattice materials with energy relaxation
Vassilios Vargiamidis, Mischa Thesberg, Neophytos Neophytou
We present an analytical model for the Seebeck coefficient S of superlattice materials that explicitly takes into account the energy relaxation due to electron-optical phonon (e-ph…
Quantum transport simulations for the thermoelectric power factor in two dimensional nanocomposites
Samuel Foster, Mischa Thesberg, Neophytos Neophytou
Some of the most promising candidates for next generation thermoelectrics are nanocomposites due to their low thermal conductivities that result from phonon scattering on the bound…
Meeting the Scaling Challenge for Post-Silicon Nanoelectronics using CaF2 Insulators
Yury Yu. Illarionov, Alexander G. Banshchikov, Dmitry K. Polyushkin +10
Two-dimensional (2D) semiconductors have been suggested both for ultimately-scaled field-effect transistors (FETs) and More-than-Moore nanoelectronics. However, these targets can n…
Thermoelectric power factor of nanocomposite materials from two-dimensional quantum transport simulations
Samuel Foster, Mischa Thesberg, Neophytos Neophytou
Nanocomposites are promising candidates for the next generation of thermoelectric materials since they exhibit extremely low thermal conductivities as a result of phonon scattering…
On the Lorenz number of multi-band materials
Mischa Thesberg, Hans Kosina, Neophytos Neophytou
There are many exotic scenarios where the Lorenz number of the Wiedemann-Franz law is known to deviate from expected values. However, in conventional semiconductor systems, it is a…
On the effectiveness of the thermoelectric energy filtering mechanism in low-dimensional superlattices and nano-composites
Mischa Thesberg, Hans Kosina, Neophytos Neophytou
Electron energy filtering has been suggested as a promising way to improve the power factor and enhance the ZT figure of merit of thermoelectric materials. In this work we explore…
The influence of non-idealities on the thermoelectric power factor of nanostructured superlattices
Mischa Thesberg, Mahdi Pourfath, Hans Kosina +1
Cross-plane superlattices composed of nanoscale layers of alternating potential wells and barriers have attracted great attention for their potential to provide thermoelectric powe…
A Quantum Fidelity Study of the Anisotropic Next-Nearest-Neighbour Triangular Lattice Heisenberg Model
Mischa Thesberg, Erik S. Sørensen
Ground- and excited-state quantum fidelities in combination with generalized quantum fidelity susceptibilites, obtained from exact diagonalizations, are used to explore the phase d…
An Exact Diagonalization Study of the Anisotropic Triangular Lattice Heisenberg Model Using Twisted Boundary Conditions
Mischa Thesberg, Erik S. Sorensen
The anisotropic triangular model, which is believed to describe the materials CsCuCl and CsCuBr, among others, is dominated by incommensurate spiral physics and is…
General Quantum Fidelity Susceptibilities for the J1-J2 Chain
Mischa Thesberg, Erik Sorensen
We study slightly generalized quantum fidelity susceptibilities where the differential change in the fidelity is measured with respect to a different term than the one used for dri…