M. Usman

Impact of ionizing radiation on structural, dielectric, and piezoelectric properties of Sr modified PZT

Sidra Yasmeen, Muhammad Saleem Mirza, Rabia Yasmin Khosa, Sara Qaisar, Muhammad Usman

Journal article  |  2021  |  CERAMICS INTERNATIONAL

Ion irradiation effects on piezoceramic (Pb0.94 Sr0.04) (Zr0.52 Ti0.48)O3 (PSZT) are investigated by using 4 MeV carbon (C), 9 MeV..

Influence of sample momentum space features on scanning tunnelling microscope measurements

Maxwell T West, Muhammad Usman

Journal article  |  2021  |  NANOSCALE

Theoretical understanding of scanning tunnelling microscopy (STM) measurements involve electronic structure details of the STM tip..

Bismuth-containing GaAs Core-Shell Nanowires

M Usman

Conference Proceedings  |  2021  |  Proceedings of the International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD

This work theoretically investigates the electronic and optical properties of GaBixAs1-x/GaAs core-shell and GaAs/GaBixAs1-x/GaAs ..

Recent progress in atomistic modelling and simulations of donor spin qubits in silicon

Muhammad Usman

Journal article  |  2021  |  COMPUTATIONAL MATERIALS SCIENCE

Electron or nuclear spins associated with dopant atoms, such as phosphorus impurities in silicon (Si:P), have been shown to form e..

Long-Range Surface-Assisted Molecule-Molecule Hybridization

Marina Castelli, Jack Hellerstedt, Cornelius Krull, Spiro Gicev, Lloyd CL Hollenberg, Muhammad Usman, Agustin Schiffrin

Journal article  |  2021  |  SMALL

Metalated phthalocyanines (Pc's) are robust and versatile molecular complexes, whose properties can be tuned by changing their fun..

Quantum computing: A taxonomy, systematic review and future directions

SS Gill, A Kumar, H Singh, M Singh, K Kaur, M Usman, R Buyya

Journal article  |  2021  |  Software - Practice and Experience

Quantum computing (QC) is an emerging paradigm with the potential to offer significant computational advantage over conventional c..

Valley interference and spin exchange at the atomic scale in silicon

B Voisin, J Bocquel, A Tankasala, M Usman, J Salfi, R Rahman, MY Simmons, LCL Hollenberg, S Rogge

Journal article  |  2020  |  Nature Communications

Tunneling is a fundamental quantum process with no classical equivalent, which can compete with Coulomb interactions to give rise ..

Tunable bandgap and isotropic light absorption from bismuth-containing GaAs core–shell and multi-shell nanowires

Muhammad Usman

Journal article  |  2020  |  Nanoscale

Semiconductor core–shell nanowires based on the GaAs substrate are the building blocks of many photonic, photovoltaic and electron..

Epitaxial Formation of SiC on (100) Diamond

Alexander Tsai, Alireza Aghajamali, Nikolai Dontschuk, Brett C Johnson, Muhammad Usman, Alex K Schenk, Michael Sear, Christopher I Pakes, Lloyd CL Hollenberg, Jeffrey C McCallum, Sergey Rubanov, Anton Tadich, Nigel A Marks, Alastair Stacey

Journal article  |  2020  |  ACS Applied Electronic Materials

We demonstrate locally the coherent formation of silicon carbide (SiC) on diamond, a rare example of heteroepitaxy with a lattice ..

Framework for atomic-level characterisation of quantum computer arrays by machine learning

Muhammad Usman, Yi Zheng Wong, Charles D Hill, Lloyd CL Hollenberg

Journal article  |  2020  |  npj Computational Materials

Atomic-level qubits in silicon are attractive candidates for large-scale quantum computing; however, their quantum properties and ..