218 citations · 972 across the 14 of their papers we have counts for
14 papers
Hierarchies of Hofstadter butterflies in 2D covalent-organic frameworks
David Bodesheim, Robert Biele, Gianaurelio Cuniberti
The Hofstadter butterfly is one of the first and most fascinating examples of the fractal and self-similar quantum nature of free electrons in a lattice pierced by a perpendicular…
Tunable Photodetectors via in situ Thermal Conversion of TiS to TiO
Foad Ghasemi, Riccardo Frisenda, Eduardo Flores +11
In two-dimensional materials research, oxidation is usually considered as a common source for the degradation of electronic and optoelectronic devices or even device failure. Howev…
Switchable Josephson current in junctions with spin-orbit coupling
B. Bujnowski, R. Biele, F. S. Bergeret
We study the Josephson current in two types of lateral junctions with spin-orbit coupling and an exchange field. The first system (type 1 junction) consists of superconductors with…
Large birefringence and linear dichroism in TiS3 nanosheets
Nikos Papadopoulos, Riccardo Frisenda, Robert Biele +7
TiS3 nanosheets have proven to be promising candidates for ultrathin optoelectronic devices due to their direct narrow band-gap and the strong light-matter interaction. In addition…
Electronics and optoelectronics of quasi-one dimensional layered transition metal trichalcogenides
Joshua O. Island, Aday J. Molina-Mendoza, Mariam Barawi +9
The isolation of graphene and transition metal dichalcongenides has opened a veritable world to a great number of layered materials which can be exfoliated, manipulated, and stacke…
Controlling heat and particle currents in nanodevices by quantum observation
Robert Biele, César A. Rodríguez-Rosario, Thomas Frauenheim +1
We demonstrate that in a standard thermo-electric nanodevice the current and heat flows are not only dictated by the temperature and potential gradient, but also by the external ac…
Strong quantum confinement effect in the optical properties of ultrathin α-In2Se3
Jorge Quereda, Robert Biele, Gabino Rubio-Bollinger +3
The effect of quantum confinement in the optical absorption spectra of atomically thin α-In2Se3 crystals is studied, observing a huge thickness-dependent shift in the optical band…
Titanium trisulfide (TiS3): a 2D semiconductor with quasi-1D optical and electronic properties
Joshua O. Island, Robert Biele, Mariam Barawi +7
We present characterizations of few-layer titanium trisulfide (TiS3) flakes which, due to their reduced in-plane structural symmetry, display strong anisotropy in their electrical…
Electronic bandgap and exciton binding energy of layered semiconductor TiS3
Aday J. Molina-Mendoza, Mariam Barawi, Robert Biele +8
We present a study of the electronic and optical bandgap in layered TiS3, an almost unexplored semiconductor that has attracted recent attention because of its large carrier mobili…
Strain induced bang-gap engineering in layered
Robert Biele, Eduardo Flores, Jose Ramon Ares +5
By combining {\it ab initio} calculations and experiments we demonstrate how the band gap of the transition metal tri-chalcogenide TiS can be modified by inducing tensile or co…
TiS3 transistors with tailored morphology and electrical properties
Joshua O. Island, Mariam Barawi, Robert Biele +9
Control over the morphology of TiS3 is demonstrated by synthesizing 1D nanoribbons and 2D nanosheets. The nanosheets can be exfoliated down to a single layer. Through extensive cha…
Time-dependent thermal transport theory
Robert Biele, Roberto D'Agosta, Angel Rubio
Understanding thermal transport in nanoscale systems presents important challenges to both theory and experiment. In particular, the concept of local temperature at the nanoscale a…
Application of a time-convolutionless stochastic Schrödinger equation to energy transport and thermal relaxation
Robert Biele, Carsten Timm, Roberto D'Agosta
Quantum stochastic methods based on effective wave functions form a framework for investigating the generally non-Markovian dynamics of a quantum-mechanical system coupled to a bat…
A stochastic approach to open quantum systems
Robert Biele, Roberto D'Agosta
Stochastic methods are ubiquitous to a variety of fields, ranging from Physics to Economy and Mathematics. In many cases, in the investigation of natural processes, stochasticity a…