409 citations · 1.1k across the 36 of their papers we have counts for
36 papers
Vanadium doping induced valley asymmetries in WS monolayers
Frederico B. Sousa, Boyang Zheng, Elizabeth Grace Houser +10
Transition metal dichalcogenide (TMD) monolayers offer an innovative platform for encoding and manipulating information through the valley degree of freedom. While unique valley-re…
Electrically tunable MoSe/WSe heterostructure-based quantum dot
Katarzyna Sadecka, Maciej Bieniek, Paulo E. Faria Junior +3
We describe here a theory of a quantum dot in an electrically tunable MoSe/WSe heterostructure. Van der Waals heterostructures allow for tuning their electronic properties…
Electrical manipulation of intervalley trions in twisted MoSe homobilayers at room temperature
Bárbara L. T. Rosa, Paulo E. Faria Junior, Alisson R. Cadore +6
The impressive physics and applications of intra- and interlayer excitons in a transition metal dichalcogenide twisted-bilayer make these systems compelling platforms for exploring…
Dual topological insulator with mirror symmetry protected helical edge states
Warlley H. Campos, Poliana H. Penteado, Julian Zanon +3
Dual topological insulators (DTIs) are simultaneously protected by time-reversal and crystal symmetries, representing advantageous alternatives to conventional topological insulato…
Emergence of radial Rashba spin-orbit fields in twisted van der Waals heterostructures
Tobias Frank, Paulo E. Faria Junior, Klaus Zollner +1
Rashba spin-orbit coupling is a quintessential spin interaction appearing in virtually any electronic heterostructure. Its paradigmatic spin texture in the momentum space forms a t…
Spin-orbit torque in single-molecule junctions from ab initio
María Camarasa-Gómez, Daniel Hernangómez-Pérez, Ferdinand Evers
The use of electric fields applied across magnetic heterojunctions that lack spatial inversion symmetry has been previously proposed as a non-magnetic mean of controlling localized…
Amplification of interlayer exciton emission in twisted WSe/WSe/MoSe heterotrilayers
Chirag C. Palekar, Paulo E. Faria Junior, Barbara Rosa +4
Transition metal dichalcogenide (TMDC) heterostructures have unique properties that depend on the twisting angle and stacking order of two or more monolayers. However, their practi…
Charge transfer and asymmetric coupling of MoSe valleys to the magnetic order of CrSBr
C. Serati de Brito, P. E. Faria Junior, T. S. Ghiasi +13
Van der Waals (vdW) heterostructures composed of two-dimensional (2D) transition metal dichalcogenides (TMD) and vdW magnetic materials offer an intriguing platform to functionaliz…
Magneto-optical anisotropies of 2D antiferromagnetic MPX from first principles
Miłosz Rybak, Paulo E. Faria Junior, Tomasz Woźniak +3
Here we systematically investigate the impact of the spin direction on the electronic and optical properties of transition metal phosphorus trichalcogenides (MPX, M=Mn, Ni, Fe;…
Low-scaling GW algorithm applied to twisted transition-metal dichalcogenide heterobilayers
Maximilian Graml, Klaus Zollner, Daniel Hernangómez-Pérez +2
The method is widely used for calculating the electronic band structure of materials. The high computational cost of algorithms prohibits their application to many system…
DFT2kp: effective kp models from ab-initio data
João Victor V. Cassiano, Augusto L. Araújo, Paulo E. Faria Junior +1
The method, combined with group theory, is an efficient approach to obtain the low energy effective Hamiltonians of crystalline materials. Although the…
Emergent Trion-Phonon Coupling in Atomically-Reconstructed MoSe-WSe Heterobilayers
Sebastian Meier, Yaroslav Zhumagulov, Matthias Dietl +8
In low-temperature resonant Raman experiments on MoSe-WSe heterobilayers, we identify a hybrid interlayer shear mode (HSM) with an energy, close to the interlayer shear mod…
Signatures of electric field and layer separation effects on the spin-valley physics of MoSe/WSe heterobilayers: from energy bands to dipolar excitons
Paulo E. Faria Junior, Jaroslav Fabian
We investigate the spin-valley physics (SVP) in MoSe/WSe heterobilayers under external electric field (EF) and changes of the interlayer distance (ID). We analyze the spin…
Strain control of exciton and trion spin-valley dynamics in monolayer transition metal dichalcogenides
Zhao An, Pedro Soubelet, Yaroslav Zhumagulov +10
The electron-hole exchange interaction is a fundamental mechanism that drives valley depolarization via intervalley exciton hopping in semiconductor multi-valley systems. Here, we…
Probing type-II Ising pairing using the spin-mixing parameter
Paulina Jureczko, Jozef Haniš, Paulo E. Faria Junior +2
The immunity of Ising superconductors to external magnetic fields originates from a spin locking of the paired electrons to an intrinsic Zeeman-like field. The spin-momentum lockin…
Proximity-enhanced valley Zeeman splitting at the WS/graphene interface
Paulo E. Faria Junior, Thomas Naimer, Kathleen M. McCreary +5
The valley Zeeman physics of excitons in monolayer transition metal dichalcogenides provides valuable insight into the spin and orbital degrees of freedom inherent to these materia…
Twist angle dependent interlayer transfer of valley polarization from excitons to free charge carriers in WSe/MoSe heterobilayers
Frank Volmer, Manfred Ersfeld, Paulo E. Faria Junior +13
We identify an optical excitation mechanism that transfers a valley polarization from photo-excited electron-hole pairs to free charge carriers in twisted WSe/MoSe heterobi…
Strong manipulation of the valley splitting upon twisting and gating in MoSe/CrI and WSe/CrI van der Waals heterostructures
Klaus Zollner, Paulo E. Faria Junior, Jaroslav Fabian
We investigate the twist-angle and gate dependence of the proximity-induced exchange coupling in the monolayer transition-metal dichalcogenides (TMDCs) MoSe and WSe due to…
Ultrafast pseudospin quantum beats in multilayer WSe and MoSe
Simon Raiber, Paulo E. Faria Junior, Dennis Falter +6
Layered van-der-Waals materials with hexagonal symmetry offer an extra degree of freedom to their electrons, the so called valley index or valley pseudospin. This quantity behaves…
Wurtzite quantum wires with strong spatial confinement: polarization anisotropies in single wire spectroscopy
Viola Zeller, Nadine Mundigl, Paulo E. Faria Junior +3
We report GaAs/AlGaAs nanowires in the one-dimensional (1D) quantum limit. The ultrathin wurtzite GaAs cores between 20-40\,nm induce large confinement energies of several tens of…
Sensitivity of the MnTe valence band to orientation of magnetic moments
Paulo E. Faria Junior, Koen A. de Mare, Klaus Zollner +3
An effective model of the hexagonal (NiAs-structure) manganese telluride valence band in the vicinity of the A-point of the Brillouin zone is derived. It is shown that while for th…
Strong substrate strain effects in multilayered WS2 revealed by high-pressure optical measurements
Robert Oliva, Tomasz Woźniak, Paulo E. Faria Junior +5
The optical properties of two-dimensional materials can be effectively tuned by strain induced from a deformable substrate. In the present work we combine first-principles calculat…
Effect of Rashba and Dresselhaus spin-orbit coupling on supercurrent rectification and magnetochiral anisotropy of ballistic Josephson junctions
Christian Baumgartner, Lorenz Fuchs, Andreas Costa +11
Simultaneous breaking of inversion- and time-reversal symmetry in Josephson junction leads to a possible violation of the equality for the current-phase relation. Thi…
A Josephson junction supercurrent diode
Christian Baumgartner, Lorenz Fuchs, Andreas Costa +10
Transport is called nonreciprocal when not only the sign, but also the absolute value of the current, depends on the polarity of the applied voltage. It requires simultaneously bro…