15 citations · 24 across the 13 of their papers we have counts for
14 papers
Rational Design of Low-Dimensional Hybrid Organic/Inorganic Interfaces for Enhanced Second-Harmonic Generation
Michele Guerrini, Muhammad Sufyan Ramzan, Caterina Cocchi
Hybrid interfaces formed by push-pull organic molecules physisorbed on two-dimensional (2D) semiconductors provide a structurally tunable platform for engineering second-harmonic g…
All-Optical Control of Interfacial Polarization in MoS/WSe Heterobilayers
Muhammad Sufyan Ramzan, Giancarlo Soavi, Caterina Cocchi
All-optical tuning of van der Waals heterostructures with coherent radiation offers a promising path toward ultrafast memory and optoelectronic devices. In the first-principles fra…
Charge Tunable Optical Nonlinearity of Moiré Exciton-Polaritons
Zhijie Li, Kok Wee Song, Jens-Christian Drawer +16
Transition metal dichalcogenides represent a versatile platform to study strong light-matter interactions based on excitons and electrons in ordered lattices. Twist-engineering of…
Highly Efficient Exciton Modulation in MoSe/PdSe Heterostructures
Petr Rozhin, Emma Contin, Danae Katrisioti +15
Controlling exciton recombination in atomically thin semiconductors is central to their optoelectronic functionality, as the competition between radiative and non-radiative decay c…
Exchange-Correlation Functionals in 2D Materials: Applications, Challenges, and Limitations
Ahsan Javed, Mahvish Shaheen, Muhammad Shahbaz +3
The rapid development of two-dimensional (2D) materials has reshaped modern nanoscience, offering properties that differ fundamentally from their bulk counterparts. As experimental…
Atomistic Origin of Photoluminescence Quenching in Colloidal MoS2 and WS2 Nanoplatelets
Surender Kumar, Markus Fröhlich, Stefan Velja +8
Large chemical tunability and strong light-matter interactions make colloidal transition metal dichalcogenide (TMD) nanostructures particularly suitable for light-emitting applicat…
Edge Magnetism in Colloidal MoS2 Triangular Nanoflakes
Surender Kumar, Stefan Velja, Muhammad Sufyan Ramzan +1
The control of localized magnetic domains at the nanoscale holds great promise for next-generation spintronic applications. Colloidal transition metal dichalcogenides nanostructure…
Effect of the Source toSubstrate Distance on Structural, Optoelectronic, and Thermoelectric Properties of Zinc Sulfide Thin Films
Asad Ur Rehman Khan, Muhammad Ramzan, Muhammad Faisal Iqbal +6
Zinc sulfide ZnS thin films with variable structural, optical, electrical, and thermoelectric properties were obtained by changing the source to substrate SSD distance in the physi…
Composition-dependent absorption of radiation in semiconducting MSi2Z4 Monolayers
Muhammad Sufyan Ramzan, Tomasz Woźniak, Agnieszka Kuc +1
The recent synthesis of MoSi2N4 material, along with theoretical predictions encompassing the entire family of chemical analogs, has opened up a new array of low-dimensional materi…
Effect of Coulomb impurities on the electronic structure of magic angle twisted bilayer graphene
Muhammad Sufyan Ramzan, Zachary A. H. Goodwin, Arash A. Mostofi +2
In graphene, charged defects break the electron-hole symmetry and can even give rise to exotic collapse states when the defect charge exceeds a critical value which is proportional…
Electronic and Excitonic Properties of MSi2Z4 Monolayers
Tomasz Woźniak, Umm-e-hani Asghar, Paulo E. Faria Junior +2
MA2Z4 monolayers form a new class of hexagonal non-centrosymmetric materials hosting extraordinary spin-valley physics. While only two compounds (MoSi2N4 and WSi2N4) were recently…
Gas Sensing Properties of single-material SnP3 logical junction via Negative Differential Resistance: Theoretical Study
Muhammad S. Ramzan, Han Seul Kim, Agnieszka B. Kuc
The field of 2D materials has gained a lot of attention for vast range of applications. Amongst others, the sensing ability towards harmful gases is the application, which we explo…
Tuning valleys and wave functions of van der Waals heterostructures by varying the number of layers: A first-principles study
Muhammad S. Ramzan, Jens Kunstmann, Agnieszka B. Kuc
In van der Waals heterostructures of two-dimensional transition-metal dichalcogenides (2D TMDCs) electron and hole states are spatially localized in different layers forming long-l…
Hybrid density functional study of electronic and optical properties of phase change memory material:
T. Kaewmaraya, M. Ramzan, 1 H. Löfås +1
In this article, we use hybrid density functional (HSE06) to study the crystal and electronic structures and optical properties of well known phase change memory material $\mathrm{…