Condensed Matter and Quantum Materials Group Members
We are a team of academics and research students in the Department of Physics who work on research projects related to Condensed Matter and Quantum Materials.
We look at the structure and properties of matter from single atoms to collective quantum phenomena.
Academic Staff
Dr Enrico Da Como (Research Group Leader)
I study optical and electronic phenomena in quantum materials exhibiting correlated states. In recent years interest has focussed on charge density wave and superconductivity phenomena probed by spectroscopic methods such as femtosecond spectroscopy and photoemission.Dr Simon Crampin (personal page)
I mainly study the electronic structure of solids, especially at surfaces and interfaces where the reduction in translational symmetry gives rise to new physics. The research involves the development of theoretical and computational techniques, primarily Green function methods and variational embedding schemes which can properly and elegantly accommodate the awkward surface or interface boundary conditions. Much of my work is done in collaboration with experimentalists, where the challenge is to understand and interpret ongoing measurements.Dr Sara Dale
I am interested in the interactions of ionic liquids with 2D materials for applications spanning electrochemical systems to intrinsic 2D material properties. My group takes an experimental approach to studying these interactions and utilises a range of microscopy and electrical characterisation techniques to investigate the chemical and electronic processes at the 2D material interface.Dr Adelina Ilie (personal page)
I investigate quantum properties of nanomaterials with designed behaviour at the atomic / nano-scale to induce new functionality at the macro-scale in devices and systems. We cover 2D magnetic and spin-textured materials, multiferroics, 2D molecular networks, and topological materials; with a focus on atomically-resolved scanning probe microscopies and in-situ combined growth, characterization, and integration methods. Applications include disruptive, novel IT technologies (e.g. spintronics and energy-efficient platforms) and systems for quantum technologies; and hybrid bio-inorganic interfaces and systems for biosensing and biomedicine. I am also an entrepreneur having pioneered non-invasive technologies for glucose and other biomarkers monitoring platforms.Dr Marcin Mucha-Kruczynski (personal page)
I am a theoretical physicist primarily interested in the properties of two-dimensional crystals as well as the new phenomena emerging in their stacks or at interfaces between them. In such situations, both the properties of the neighbouring materials and the atomic details of the interface matter and their interplay can result in novel quantum states. My other interests include studying the links and asymmetries between extreme gains and losses in time series.Dr Michele Pizzochero
I am a theoretical physicist specializing in condensed matter. My research focuses on understanding and engineering the behavior of electrons in crystals using quantum mechanical approaches, including density-functional theory and simple model Hamiltonians. I am particularly interested in low-dimensional crystals, such as graphene and related nanostructures, as platforms for exploring unconventional quantum phases.Dr Habib Rostami
I am a theorist in condensed matter physics expert in quantum transport and quantum many-body problems stemming from disorder, electron-phonon, and Coulomb interactions. I study fundamental theoretical problems in quantum materials with the microscopic description of realistic physical properties. My main research experiences are on effective modelling of two-dimensional (2D) materials such as graphene, transition metal dichalcogenides (TMDs), and their heterostructures.Professor Phil Salmon (personal page)
My research focuses on the atomic scale structure and dynamics of liquids and glasses and includes an extensive use of both neutron and x-ray scattering methods. The systems I investigate range from network glass forming materials, through ionic liquids which include metals and aqueous solutions, to glasses that have been modified by incorporating rare-earth ions.Dr Peter Sloan
My research interests lie at the boundary of physics and chemistry and explore the possibilities of controlling and manipulating, on the atomic scale, individual molecules at a surface. Specifically by probing single molecule excitations by tunnelling electrons (or holes) from the tip on a scanning tunnelling microscope (STM), to both further understand these fundamental processes and to uncover new methods of controlling matter at the atomic scale.Professor Daniel Wolverson
My research focuses on the quantum behaviour of electrons in materials, principally semiconductors. I use a variety of optical spectroscopic techniques to probe this behaviour, including Raman microscopy, magneto-Raman scattering, and photoluminescence, in order to investigate quantum-confined electronic states in semiconductor heterostructures, nanoparticles, and two-dimensional layered materials.Dr Anita Zeidler (personal page)
I am a theorist in condensed matter physics. I study the structure and properties of liquid and glassy materials at and recovered from extreme conditions of high pressure (up to 20 GPa) and/or high temperature (up to 2000 K). The aim is to provide benchmark data which will aid state-of-the-art computer simulations to produce predictive models.
Affiliated Academic Staff
Professor Kamal Asadi
I investigate the science and application of functional organic and polymer-based materials with a focus on creating multifunctional systems that seamlessly couple electrical, mechanical, and magnetic responses, and on integrating these materials into devices for energy harvesting, memory technologies, neuromorphic computing, and novel implantable devices for cellular stimulation.Professor Simon Bending (personal page)
I seek to understand the magnetic properties of superconducting and ferromagnetic materials by, for example, exploiting innovative scanning probe and magnetometry techniques based on nanoscale Hall sensors. My research work encompasses investigations of vortex matter in unconventional superconductors, domain wall dynamics in ferromagnetic multilayers, the coexistence of superconductivity and ferromagnetism in new materials and heterostructures as well as the development of novel electronic device structures.Dr Kei Takashina
I am an experimentalist, interested in transport devices and phenomenology involving some subset of charge, spin, valley, ions, mass, heat; nanoscale and or bio-inspired.Professor Alison Walker (personal page)
I introduced the use of device Monte Carlo simulations to understand energy and charge transport at the mesoscale (nm to micron, filling the gap between electronic structure at sub nm length scales and continuum models at length scales of sub-microns and larger). I initiated the use of kinetic Monte Carlo for modelling organic and perovskite devices. I was one of the first to establish the role of mobile ion defects in device outputs. My current focus is on using Machine Learning techniques to create a digital twin, a virtual copy of the device that can be used to simulate real life scenarios such as degradation. The benefit of this approach is much faster and more direct characterisation of materials and devices.
Postdoctoral Associates
Mr Shubham Patel
I am a computational condensed matter theorist with expertise in first principles-based simulations of real materials. My research is focused on investigating materialistic properties such as electronic, phononic, magnetic, superconducting and topological properties, of a wide range of systems but mainly two-dimensional crystal geometries. I have experience in DFT, DMFT, Wannierization, phonon and electron-phonon interactions and hybrid-DFT. Additionally, I perform analytical and computational modelling to explore the exotic phenomenon of the model systems.Dr Joseph Wilcox
My research is focused on the fundamental physics of unconventional superconductors. Recently I have been working on the unusual material EuFe2(As1-xPx)2 - an iron-based superconductor that exhibits simultaneous superconductivity and ferromagnetism over a wide temperature range. This research could have important consequences for the development of future high-current capacity superconducting tapes used in industrial applications.
PhD Students
Jamie Mclauchlan (Supervisor: Dr Habib Rostami)
I am a theoretical PhD student whose research investigates the dynamics of microdroplets as they interact with surfaces. Recently this has focused on observing bouncing behaviour with experiments and modelling this with numerical simulations and analytical models. I am also interested in viscoelastic droplets dynamics and how they are related to respiratory aerosols.Matteo Moioli (Supervisor: Dr Michele Pizzochero)
I am a hybrid computational and theoretical PhD student working on graphene-based nanostructures, such as graphite junctions and nanoribbons. My main focus is on the electronic properties of these materials. To study them, I use both simple model Hamiltonians and fully self-consistent ab initio calculations, mainly based on DFT. Finally, to investigate non-equilibrium properties — mostly quantum transport — I employ the Non-Equilibrium Green’s Function formalism implemented in available codes.Luke Pimlott (Supervisor: Dr Habib Rostami)
I am working in theoretical condensed matter physics, particularly looking at nonlinear light-matter interaction, such as the generation of rectified photocurrents and nonlinear Hall effects, or optically-generated atomic force, in response to two incident photons. I look at the response functions describing such processes, seeing how they depend on factors such as the intrinsic properties of the electronic band structure and electron-phonon coupling.Pablo Reiser Ramirez (Supervisor: Dr Habib Rostami)
I am a theoretical PhD student researching nonlinear and topological phonons. Recently, I have been studying chiral phonons and their angular momentum, as well as their coupling to magnetism. I am also working on nonlinear Boltzmann transport to explore the magneto-acoustoelectric effect.Luke Soneji (Supervisor: Dr Marcin Mucha-Kruczynski)
I am a condensed matter theorist, particularly interested in modelling electronic behaviour in graphite at the boundary between two and three dimensions. Recently, I have been studying the topological properties of rhombohedral stacked graphite and investigating the presence and robustness of zero-energy edge states at junctions between crystals.Rufus Stanier (Supervisor: Dr Habib Rostami)
I work on theoretical condensed matter physics. I’m interested in the effects of coherent light or sound waves on electrons in layered 2-D materials and the emergent phenomena which result, especially where the light/sound itself has interesting properties (eg. if it carries orbital angular momentum or adds additional spatial periodicity to the system). Prior to arriving at Bath, I investigated 1-D edge state transport and Luttinger liquids in monolayer graphene.Liam Turnpenny (Supervisor: Dr Adelina Ilie)
I use low temperature scanning probe microscopy to investigate multifunctional surfaces and the development of long range magnetic order in monoatomic layers and heterostructures grown on crystal surfaces. Current focus is on designed spin-textured materials and multiferroics.Mugerabe Zerabza (Supervisor: Dr Enrico Da Como)
My research work focuses on characterising correlated electronic behaviour, like charge density waves, in quasi two-dimensional materials. This entails using time-resolved photoemission spectroscopy methods to observe the dynamics within the band dispersion of these materials on an ultrafast timescale, where the system is out of equilibrium. The aim is to highlight the interplay within the different layers of these materials; this could aid ongoing research of heterostructures where these electronic dynamics could be exploited.
Affiliated PhD Students
Ned Dreamer (Supervisor: Professor Kamal Asadi)
My work is on organic electrochemical transistors and in particular on nonlinear resistance phenomena in organic thin films. I aim to unlock the potential of organic electrochemical transistors in diverse applications, from biosensing to neuromorphic computing and flexible electronics.William Fern (Supervisor: Professor Simon Bending)
My research work focusses on the interplay between superconductivity and magnetism in recently discovered magnetic iron-based superconductors. The influence of the underlying magnetic structure on the dynamics of superconducting vortices is being explored with a view to optimising lossless high current conductors for key applications in fusion confinement and magnetic resonance imaging (MRI).Jaden Froome (Supervisor: Professor Kamal Asadi)
My research is on integrative biomaterials for tissue repair and regeneration. Specifically, I am investigating piezoelectric nanofiber scaffolds to stimulate cardiac regeneration. If successful, these scaffolds could be used as cardiac patches following myocardial infarction, with the aim to reform functional (rather than fibrotic) tissue.Oscar Leonard (Supervisor: Professor Simon Bending)
My research work involves exploring a novel method for eliminating trapped flux vortices from multilayer superconducting electronic devices by introducing asymmetric vortex pinning potentials with a sawtooth structure. This entails extending previous work on 1D and 2D vortex ratchet structures, where rectified, unidirectional vortex motion was achieved using a symmetric ac drive, to much more complex 3D multilayer superconducting devices driven by ac currents or magnetic fields.James Lerpiniere (Supervisor: Professor Alison Walker)
I am a computational physicist modelling hot charge carriers, photoexcited electrons and holes that exist in nonequilibrium high-energy states of photoactive material leading to the possibility of solar cells that exceed the Shockley-Queisser limit. Lead halide perovskite cells have been the focus of these studies due to their long hot carrier lifetimes. I am using Machine Learning techniques to identify which input parameters for my model most strongly influence this behaviour and provide the best match with ultrafast absorption spectroscopy measurements.