21 citations · 43 across the 11 of their papers we have counts for
11 papers
Emergence of a non-bulk hexagonal FeS single layer via phase transformation
Affan Safeer, Wejdan Beida, Felix Oberbauer +8
Two-dimensional materials can stabilize crystal structures that are absent from their bulk counterparts, offering opportunities for materials design. Here, we report the synthesis…
Atomic-Scale Detection of Néel Vector Switching in the Single-Layer A-type Antiferromagnet Cr2S3-2D
Affan Safeer, Calisa Dias, Mahdi Ghorbani-Asl +9
The detection of Néel vector switching in a single-layer A-type antiferromagnet marks an important step toward functional two-dimensional spintronics. Here, CrS-2D, grown o…
Atomic-Scale Quantum Control of Single Spin Defects in a Two-Dimensional Semiconductor
Kwan Ho Au-Yeung, Wantong Huang, Johanna Matusche +15
Individual spin defects in solids are promising building blocks for quantum technologies, but their deterministic creation, individual addressability, and operation near surfaces r…
Substrate Role in Polaron Formation on Single-layer Transition Metal Dihalides
Affan Safeer, Oktay Güleryüz, Guangyao Miao +3
Single-layer transition metal dihalides grown on conducting substrates were shown to host stable polarons. Here, we investigate polarons in insulating single-layer MnBr grown b…
MnBr on the graphene on Ir(110) substrate: growth, structure, and super-moirè
Affan Safeer, Oktay Güleryüz, Nicolae Atodiresei +3
Single-layer MnBr is grown on graphene (Gr) supported by Ir(110) and investigated using low-energy electron diffraction, scanning tunneling microscopy, and spectroscopy. The st…
Inelastic tunneling into multipolaronic bound states in single-layer MoS
Camiel van Efferen, Laura Pätzold, Tfyeche Y. Tounsi +12
Polarons are quasiparticles that arise from the interaction of electrons or holes with lattice vibrations. Though polarons are well-studied across multiple disciplines, experimenta…
Which chromium-sulfur compounds exist as 2D material?
Affan Safeer, Mahdi Ghorbani-Asl, Wouter Jolie +3
Two-dimensional (2D) chromium-sulfides are synthesized by molecular beam epitaxy using graphene as a substrate. Structure characterization by employing scanning tunneling microscop…
Engineering two-dimensional materials from single-layer NbS
Timo Knispel, Daniela Mohrenstecher, Carsten Speckmann +10
Starting from a single layer of NbS grown on graphene by molecular beam epitaxy, the single unit cell thick 2D materials NbS-2D and NbS-2D are created using…
Probing the spin polarization of an Anderson impurity
Mahasweta Bagchi, Tfyeche Y. Tounsi, Affan Safeer +6
We report spin-polarized scanning tunneling microscopy measurements of an Anderson impurity system in MoS mirror twin boundaries, where both the quantum confined impurity sta…
Growth of aligned and twisted hexagonal boron nitride on Ir(110)
Thomas Michely, Jason Bergelt, Affan Safeer +3
The growth of monolayer hexagonal boron nitride (h-BN) on Ir(110) through low-pressure chemical vapor deposition is investigated using low energy electron diffraction and scanning…
Novel 2D vanadium sulphides: synthesis, atomic structure engineering and charge density waves
Camiel van Efferen, Joshua Hall, Nicolae Atodiresei +9
Two new ultimately thin vanadium rich 2D materials based on VS2 are created via molecular beam epitaxy and investigated using scanning tunneling microscopy, X-ray photoemission spe…