Dr. Juan Pereiro Viterbo (Senior Lecturer):
My research interests have been very wide so far. Most of my research has orbited around thin film growth and about designing new experimental equipment to solve novel physical problems. I have worked in III-N semiconductors, high temperature superconductivity, new superconducting materials, interface superconductivity, magnetism, electron and atomic force microscopy, X-Ray diffraction and nanostructure fabrication.
My current research focuses on the study of nucleation and relaxation phenomena in thin films and nanostructures of III-As semiconductors.
The laboratory hosts a unique Molecular Beam Epitaxy/Low Energy Electron Microscope system that allows real-time imaging of real and reciprocal space of the surface of the sample during growth with atomic resolution in z axis and 5 nanometer resolution in x-y directions.
Matyo Ivanov (PhD student):
Study of nucleation mechanisms of GaAs thin films and InAs nanostructures using Low Energy Electron Microscopy. Interested in Artificial intelligence techniques. Development of computational techniques for experimental physicists.
Debobrata Deb Tushit (PhD Student):
Mr. Robert Hugh Lang (LEEM technical support)
Previous group members:
Prof. David E. Jesson (Chair of Experimental Physics & Marie Curie Fellow):
My research is internationally recognised for the combination of cutting-edge electron microscopy techniques and theoretical modelling to investigate semiconductor nanostructures and thin film growth mechanisms. My most recent work has focused on nanodynamics and the design and application of a III-V surface electron microscope which is having a major impact on our understanding of how compound semiconductor materials and quantum structures grow. We have obtained the first experimental movies of how such structures form under arsenic flux and the Cardiff III-V low energy electron microscope (LEEM) is the only instrument in the world with this capability. In addition to state-of-the-art experiments, we have also developed a parallel program focused on the physics of LEEM imaging which has allowed us to quantify our movies and develop new techniques for extracting 3D information from them which was previously assumed impossible.
Yuran Niu (Postoctoral Research Associate):
Expert on Low Energy Electron Microscopy and Synchrotron based experimental techniques.
Mr. Daniel Gomez Sanchez
My field of interest have been so far III-V semiconductors. Previously, I have been researching on GaN, specifically in the formation mechanisms of GaN Nanowires grown by Selective Area Growth (SAG) homoepitaxy analyzing how the defects created during the growth may affect the optical properties for different diameters of GaN nanocolumns.
Currently I am a PhD Student in Cardiff Uni. My PhD started in April 2016 and it is focused on Low Energy Electron Microscopy (LEEM) of droplet epitaxy and droplet etching on GaAs (100) surfaces.
Mr. Kennet Rodriguez
I have originally been interested in the methods of theoretical physics, such as the manifold-based framework of general relativity or the mathematical concepts of quantum mechanics. However, my interests have latterly steered towards more applied areas in materials physics. I have studied self-assisted epitaxial growth of GaAs and GaP nanowires; their morphology as a function of substrate temperature and V/III flux ratio and their structure according to in-situ reflection-high-energy-electron-diffraction. My research interests today, as a PhD student in the LEEM-MBE group at Cardiff University, are the observation and theoretical modeling of atomic-scale processes in semiconductor surfaces and III-As nanostructure formation.