About the presenter Abdulhakim is a PhD student working with Associate Investigator David Cortie to undertake a PhD focused on magnetic materials,ion beam implantation techniques, modification of topological insulators, and device fabrication using focused ion beam microscope.
Polaritons in an excitonic reservoir
About the presenter Kenneth is a PhD candidate in CI Meera Parish‘s group. His research aims to investigate the interactions between excitons (or exciton-polaritons), and 2-D electron gas, with a view to inducing a collective, dissipationless flow of charged bosons: exciton-mediated superconductivity.
The Emergence of Superfluidity in Ultracold Fermi Gases
About the presenter Emma is a Women in FLEET Fellow and postdoctoral researcher in CI Matthew Davis‘ group, and also directly connects with research being conducted by CI Chris Vale. She is currently studying the dynamics of the emergence of superfluidity in ultracold Fermi gases.
The concept of the brain
About the presenter Michael Ibbotson is a neuroscientist and Professor in the Department of Biomedical Engineering at The University of Melbourne. Originally from the UK, Michael obtained his PhD from The University of London before moving to the Australian National University, where he held an Australian Research Council Post-Doctoral Fellowship. Michael’s leadership roles include Head of the Visual Sciences Department …
Berry curvature and strong light-matter coupling in liquid crystal microcavities with perovskites
About the presenter Dr Mateusz Król is a research associate at Warsaw University of Technology.
Invited: Research Translation Journeys
About the presenter Jonathan Lacey has been involved with technology commercialization since the late 1980s, as a researcher and inventor, product champion, investor and entrepreneur; at universities, large corporations and start-ups. He had 10 years experience working in Silicon Valley with HP-Broadcom. He joined CSIRO in 2011 to drive commercialization of the NGARA wireless communications technologies, and more recently …
Closing the Gap: Data-driven workforce models for Australian STEMM academia
About the presenter ARC Laureate Fellow Lisa Kewley, a professor of Astrophysics at ANU and is also director of the ASTRO 3D Centre of Excellence. Prof Kewley has a deep interest in gender equity and what institutions can do to enable female academics. Through a suite of recruitment and retention initiatives, Lisa and her team at Astro3D is very close to …
Optoelectronics based on Transition Metal Dichalcogenide/2D Perovskite Heterostructures
About the presenter Abin Varghese is a PhD student working with CI Nikhil Medhekar.
Polariton pillar cavity: polarization, interactions, correlations
About the presenter Dr Olivier Bleu is a Postdoctoral Research Fellow working with A/Prof Meera Parishand Dr Jesper Levinsen at Monash University within FLEET’s Research themes 2: Exciton superfluids. His research interests include Berry curvature and related effects, topological photonics, Bose-Einstein condensates and exciton-polariton physics.
Towards contacting monolayer TMDC through touch-printed Ga2O3 tunnel barriers
About the presenter One of the three inaugural Women in FLEET fellows, Dr Semonti Bhattacharyya is contributing to FLEET Research theme 1, topological materials, Research theme 2, exciton superfluids and Enabling technology theme A, atomically-thin materials, working with Prof Michael Fuhrer. As an experimental condensed matter physicist, she has worked extensively on electrical transport properties of topological materials and …
Intrinsic and extrinsic effects on Dirac fermions in graphene covered by Ga2O3
About the presenter Matthew Gebert is a PhD student in Prof Michael Fuhrer’s group at Monash University, investigating the interface between the 2D surface state of a 3D topological insulator (TI) with a thin, insulating ferromagnetic material. The aims of the project are to understand the effects of time-reversal symmetry breaking on the topological insulator and to investigate the …
Synthesis of molybdenum-based two-dimensional materials with liquid metal
About the presenter Yifang Wang is a PhD student working with Prof Kourosh Kalantar-zadeh at UNSW. Yifang has a Masters in inorganic chemistry (South China University of Technology), focusing on the room-temperature synthesis of 2D-materials via interfacial reactions such as between liquid metal and air. “By conducting this research project, we hope to offer a new paradigm for 2D material …
Invited: Exciton-polaritons and exciton-polariton lattices
About the presenter PI Prof Sven Höfling oversees the design and fabrication of highly customised semiconductor samples for Research Theme 2 on exciton and exciton-polariton systems, as well as contribute his extensive expertise in all aspects of exciton-polariton physics.
Inducing superconductivity in organic-inorganic hybrid materials
About the presenter Prof Shuyun Zhou received her PhD in Physics from University of California at Berkeley in 2007. From 2008 to 2012, she was a postdoc fellow of the Advanced Light Source and a project scientist of Materials Sciences Division of the Lawrence Berkeley National Laboratory. She joined the Department of Physics at Tsinghua University in 2012. Shuyun Zhou’s research …
Invited: Joanna Batstone – Artificial intelligence and data science for social good
About the presenter Prof Joanna Batstone Directs the Monash Data Futures Institute, coordinating data-science and artificial-intelligence (AI) capabilities from across the University in a digital ecosystem fostering collaborative interdisciplinary research and promoting lasting industry engagements. Previously at IBM where she held a variety of technical and business-leadership roles in R&D, innovation and corporate strategy, data analytics and AI, she is passionate ...
Invited Colloquium
About the presenter Sir Kostya Novoselov is Langworthy Professor of Physics at the University of Manchester and a Director of the National Graphene Institute. His work with Andrew Geim to isolate graphene for the first time has earned them a Nobel Prize in Physics 2010. Sir Kostya International recognition for his work in condensed matter physics, mesoscopic physics and nanotechnology …
Tuning the Edge States of Bismuthene via Substrate Effects
About the presenter Chutian Wang is a PhD student working with A/Prof Nikhil Medhekar at Monash University, using fundamental quantum mechanical simulations to investigate the electronic structure of topological insulator materials under Research Theme 1, topological materials.
Non-equilibrium dynamics of a quenched Fermi gas
About the presenter Dr Paul Dyke is currently a research fellow at Swinburne University of Technology. Within FLEET, Dr Dyke is working in Research theme 3, he is experimentally studying Floquet topological superfluidity, non-equilibrium enhancements to superfluids and 2D topological insulators in synthetic dimensions.
Determination of the spin quantization axis of helical edge states in monolayer WTe2
Monolayer WTe2 is predicted to be a quantum spin Hall insulator (QSHI) and the quantized edge transport has recently been demonstrated. However, the ‘smoking gun’ signature of a QSHI, spin-momentum locking of the helical edge states, has yet to be experimentally validated. Here, we propose a model and show that the spin quantization axis of the helical edge states …
A Generalized Model for Quantum Anomalous Hall Insulators – Theory and Potential Applications in Topological Electronics
Quantum anomalous Hall effect, a member of quantum Hall trio featured with gapped bulk band dispersion and chiral edge propagating modes, is indebted to strong intrinsic magnetisation and large spin-orbit interaction. Depending upon the nature of exchange interaction and spin-orbit interaction, several theoretical models have been proposed for the realization of quantum anomalous Hall effect in various materials. Symmetry analysis shows …
Progress towards robust and reproducible topologically nontrivial lithographically-defined electronic devices in semiconductor nanostructures
Nanodevices with controllable, topologically non-trivial phases have the potential to enable the development of electronic devices with ultra-low energy dissipation. This talk will discuss progress towards this goal in the framework of reproducible and robust topologically non-trivial phases in lithographically-defined nanostructures in high-mobility semiconductor heterostructures. Topological phases in a 2D system such as the quantum spin hall effect where the …
Long-lived populations of momentum- and spin-indirect excitons in monolayer WSe2
In monolayer WSe2, the ground-state exciton is dark (D exciton, spin-indirect), and the valley degeneracy allows low-energy dark momentum-indirect excitons (XK exciton) to form. Interactions between the dark excitons and the optically accessible bright exciton (X) are likely to determine X exciton’s optical properties at high power and limit the ultimate exciton densities be achieved. However, so far, little is …
Creation of certain topological insulators on the interface of liquid metals
Recent studies have predicted a topologically insulating state in some of the two-dimensional (2D) post transition metals and metalloids (here referred to as Xenes). This family of materials includes tellurene (Te), selenene (Se), antimonene (Sb), bismuthene (Bi), and stanene (Sn); some of which have been predicted to host nontrivial quantum spin hall states, with insulating sheet interiors and conducting states …
Overcoming Boltzmann’s Tyranny in a Transistor via the Topological Quantum Field Effect
I will give a brief introduction to semiconductor transistors and the way they work at low energy, including the notion of sub threshold slope and Boltzmann’s tyranny. Following on from that I will discuss the way a topological transistor is envisaged to work and how we may define a sub threshold slope for it. I will then introduce our …
A new Measure: the Revolutionary Quantum Reform of the Metric System
On 20 May 2019, World Metrology Day, the international metrology community adopted revolutionary changes to the International System of Units (the SI, or Metric System) wherein all of the base units of measure are defined by fixing the values of constants of nature. The SI is now firmly based on quantum methods of measurement. This talk will discuss why …
Strong electron-electron interactions in a 2D organic kagome crystal
Two-dimensional (2D) and layered materials with a kagome crystal structure – where atoms or molecules are arranged in corner-sharing equilateral triangles – host both Dirac and flat electronic bands, offering a rich space to realise tuneable topological and strongly correlated electronic phases. Strong electron-electron correlations have been observed recently in inorganic kagome crystals. Although predicted theoretically, such phenomena have …
Topological shift current in two-dimensional transition metal dichalcogenides
Monolayer transition metal dichalcogenides (TMDCs) with broken inversion symmetry have shown unique optical response properties. We calculate the topological phase shift of MoS2 as a prototype of TMDs systems involving the Berry connection in the presence of inter-valley scattering processes. Our results are based on two alternative approaches; quantum kinetic theory where we calculate the non-equilibrium distribution function of each …
Artificial bandstructure engineering using lithographically patterned superlattices
The field of 2D materials is rapidly developing from scotch taping graphite to isolate a single layer of carbon atoms – graphene, to assembling stacks of different 2D materials – 2D heterostructures, towards aligning individual 2D layers to create an artificial lattice, so called Moiré lattice. The accurate control of a twist angle between the 2D layers allows to change …
Transport measurements in amorphous Bi2Te3
Amorphous materials have recently been theoretically predicted to have topologically protected states [1,2]. These results are contrary to the well understood mechanisms that topological states originate from a material’s electronic band structure which requires certain symmetries to be present. Additionally, amorphous materials often allow for the synthesis of non-equilibrium compositions or doping concentrations that are not accessible in crystalline systems. …
Electric field manipulation of spin texture and magnetic response in Dirac semimetals
Three-dimensional Dirac semimetals (3D DSM) such as Cd3As2, Na3Bi show great potential as the next-generation platform for spintronic devices. The capability of these materials is derived from their key properties including a sizable gap allowing thermal stability at room temperature, and a helical spin texture for non-magnetic manipulation of spin/charge with low energy consumption. Therefore, in realizing the application the DSMs, …