About the presenter Jack Muir is a PhD student working with Assoc Prof Jeffrey Davis’ ultrafast spectroscopy group at Swinburne FLEET node, contributing to Research Theme 2. In his project, Jack aims to explore the ultrafast dynamics of two-dimensional transition metal dichalcogenide van der Waals heterostructures, with a particular interest in the effects of Moire potentials.
Diisopropylamine-enabled fabrication of high-quality 2D heterostructures
About the speakerDr Shao-Yu Chen is a research fellow working with Prof Michael Fuhrer at Monash University to realising Bose-Einstein Condensation of tightly bound excitons in 2D semiconductors. He has extensive research experiences on transport and optical measurement on 2D materials including graphene and transition metal dichalcogenides (TMDs). In particular, he has investigated strong Coulomb interaction and many-body correlation in …
FLEET 2020 Workshop Program
An overview of the workshop schedule can be viewed here. Briefly, the workshop takes place in zoom 9AM-2PM then in iSee from 2:30PM – 5PM – exception: back to zoom at 4PM on Thursday 10 December. Zoom meeting ID and iSee credentials have been provided to all workshop registrants. Please email contact@fleet.org.au for assistance. The scientific program is below, abstract …
Adding expertise with new Centre advisors
FLEET has significantly added to the expertise available to guide Centre policy and science, with the latest additions to the FLEET Advisory Committee (FAC) and International Scientific Advisory Committee (ISAC). We welcome to our Centre advisory committees Professor Rebekah Brown (Monash University), Dr Esther Levy (Wiley), Francois Peeters (University of Antwerp) and Joanna Batstone (ex IBM). Prof Rebekah Brown is …
Kitchen-temperature supercurrents from stacked 2D materials
Could a stack of 2D materials allow for supercurrents at ground-breakingly warm temperatures, easily achievable in the household kitchen? An international study published in August opens a new route to high-temperature supercurrents at temperatures as ‘warm’ as inside a kitchen fridge. The ultimate aim is to achieve superconductivity (ie, electrical current without any energy loss to resistance) at a reasonable …
FLEET Strategic Workshop
Members Only Event FLEET’s annual strategic workshop this year will be held online **NOT ZOOM**, and it will be fun and interactive! :-). Sneak peek of the venue below: With the goal to review the Centre strategic plan and an opportunity to provide the membership an update on progress of FLEET milestones. We will have two 90 minutes sessions with an …
IOP Roadmap: quantum materials
Quantum materials are exploding in condensed-matter, cold-atom physics, materials science. #explainer The new IOP quantum materials roadmap explores current research, future challenges, technical applications, underlying physics in topological insulators, multiferroics, twisted-‘magic angle’ moiré graphene, superconductors (copper-based and TMD-based), topological semimetals, Majorana states + non-equilibrium phenomena (phew!) Read the roadmap ‘Emergent’ phenomena are key to FLEET’s search for ultra-low energy electronics …
Vortex top-hats emerge in superfluids
An Australian-led study has provided new insight into the behaviour of rotating superfluids. A defining feature of superfluids is that they exhibit quantised vortices – they can only rotate with one, or two, or another integer amount of rotation. Despite this key difference from classical fluids, where vortices can spin with any strength, many features of the collective dynamics of …
FLEET brochure
The Challenge Globally, computing already consumes 8% of the world’s electricity and it’s doubling every decade. Already, the climate-change footprint of computing and the internet is as high as the global aviation industry. The ‘internet of things’ would drive this energy demand even higher. Within a decade, the financial and environmental cost of electricity use will limit the growth of ...
Congratulations Meera Parish: ARC Future Fellowship
Congratulations to FLEET CI A/Prof Meera Parish who received an ARC Future Fellowship in this week’s announcement. “The revolution in electronics and the Information Age were enabled by powerful theories based on the concept of the quasiparticle, an object composed of many particles such as electrons,” writes A/Prof Parish. The new ARC Fellowship will support Meera’s work to unravel the …
Research theme II virtual workshop
A two-day live-streamed workshop brought 30 researchers from across FLEET together last week, organised by ANU Research Fellows Maciej Pieczarka and Eliezer Estrecho. FLEET’s second research theme uses a quantum state known as a superfluid to achieve electrical current flow with minimal wasted dissipation of energy. In a superfluid, scattering is prohibited by quantum statistics, and all particles flow with …
Through the nanoscale looking glass: FLEET researchers determine boson peak frequency in ultra-thin alumina
There’s more to glass than meets the eye. Glasses, which are disordered materials with no long-range chemical order, have some mysterious properties that have remained enigmatic for several decades. Amongst these are the anomalous vibrational states that contribute to the heat capacity at low temperature. Early researchers established that these states obey Bose-Einstein statistics, and the name stuck, so today …
Liquid metal synthesis for better piezoelectrics: atomically-thin tin-monosulfide
Record output power obtained from piezoelectric, atomically-thin material Remarkable synthesis advance for materials such as tin-monosulfide (group IV monochalcogenides), which are predicted to exhibit strong piezoelectricity Potential materials for future wearable electronics and other motion-powered, energy-harvesting devices RMIT-UNSW collaboration applies liquid-metal synthesis to piezoelectrics, advancing future flexible, wearable electronics, and biosensors drawing their power from the body’s movements. Materials such …
Building future science leaders: FLEET development programs
FLEET ensures that our young researchers are prepared for future success – wherever their career takes them. The Centre currently supports 51 higher degree by research (HDR) students and 43 postdoctoral researchers with another 29 research affiliates working on FLEET projects and invited to Centre training, workshops and events. FLEET connects its researchers with internal and international networks; for example, …
Interfaces the key in atomically-thin, ‘high temperature’ superconductors
An international FLEET collaboration publishing a review of atomically-thin ‘high temperature’ superconductors finds that each has a common driving mechanism: interfaces. The team, including researchers from the University of Wollongong, Monash University and Tsinghua University (Beijing), found that interfaces between materials were the key to superconductivity in all systems examined. The enhancement of superconductivity at interfaces (interface superconductivity enhancement effect) …
Interfaces the key in atomically-thin, ‘high temperature’ superconductors
An international FLEET collaboration publishing a review of atomically-thin ‘high temperature’ superconductors finds that each has a common driving mechanism: interfaces. The team, including researchers from the University of Wollongong, Monash University and Tsinghua University (Beijing), found that interfaces between materials were the key to superconductivity in all systems examined. The enhancement of superconductivity at interfaces (interface superconductivity enhancement effect) …
Congratulations Maciej Pieczarka ANU
Congratulations to FLEET’s Maciej Pieczarka, who has been awarded the START award for young Polish scientists by the Foundation for Polish Science. Dr Pieczarka is an experimental physicist working as a postdoctoral research fellow at the Australian National University in Prof Elena Ostrovskaya’s group. Within FLEET, Maciej studies exciton-polariton condensates, focusing on dynamical condensation and phase transitions of exciton-polariton fluids …
FLEET environmental group
While FLEET’s aim is to reduce the world’s ICT power consumption, we also know that some of the work we do today is having a detrimental effect on tomorrow’s environment. Initiated by FLEET ECRs, the Centre’s Environmental working group is taking a microscope to the environmental impact of FLEET. One early output has been a tool to calculate and compare …
Applying quantum-impurity theory to quantum fluids of light
A Monash-led study develops a new approach to directly observe correlated, many-body states in an exciton-polariton system that go beyond classical theories. The study expands the use of quantum impurity theory, currently of significant interest to the cold-atom physics community, and will trigger future experiments demonstrating many-body quantum correlations of microcavity polaritons. Exploring quantum fluids “Exciton-polaritons provide a playground in …
Dissipationless physics provides path to sustainable electronics
The necessity (and price) of our digital connection An unprecedented number of Australians working from home during the 2020 coronavirus pandemic is a stark reminder of how vital electronic connections have become to community and economy. Computing has transformed society: we use our ubiquitous smartphones to access up-to-date weather predictions, to plot the best route through traffic, and to binge …
Three FLEET ECR Grant recipients
First recipients of FLEET ECR Grants Grants funding research trips to Italy, Singapore, US FLEET’s ECR Grants fund travel for ECRs and PhDs, developing networks and professional and scientific skills, including supporting travel to research facilities to learn new techniques, form new collaborations, or complete training. Of the 1st round’s eight applications, the Education & Training Committee decided to fund three: …
Studying phonon-polaritons in hBN
Phonon-polaritons in layered crystals have peculiar properties where they occur at the boundary between materials. In a new study led from UNSW, phonon-polaritons were studied in thin-layer hexagonal boron nitride (hBN) by combined scattering-type scanning near-field optical microscopy (s-SNOM) and Fourier transform infrared (FTIR) spectroscopy. Prof Kourosh Kalantar-zadeh’s multidisciplinary group at UNSW combined scattering-SNOM single-wavelength imaging and broadband scattering IR …
Ultrafast laser spectroscopy workshop getting everyone up to speed
A mini-symposium on ultrafast laser spectroscopy last week brought together the ultrafast laser spectroscopy community in Australia and New Zealand, showcasing local ultrafast laser spectroscopy research and capabilities. Exciton Science and FLEET co-sponsored the Ultrafast Laser Spectroscopy Mini-Symposium at Swinburne, which saw 45 researchers attending from 12 different unis/orgs. At FLEET, ultrafast spectroscopy is used to help understand the microscopic …
International quantum-coherence conference hosted in Melbourne
In January 2020 FLEET brought the 10th International Conference on Spontaneous Coherence in Excitonic Systems (ICSCE10) to Australia for the first time. Continuing this 15-year tradition from the global scientific community interested in various quantum phenomena, ICSCE10 was hosted at the Arts Centre Melbourne amidst smoke storms resulting from what was one of the worst bushfire seasons in Australia’s history. …
Ghostly particles detected in condensates of light and matter
Australian research collaboration makes first detection of ‘ghost particles’ from Bose-Einstein condensates made of light and matter. The ANU/Monash University collaboration study: Observed ‘quantum depletion’ for the first time in a non-equilibrium condensate Discovered that ‘light-like’ condensates don’t behave as we would expect Observed ‘ghost’ excitations arising from quantum depletion for the first time. Quantum depletion observed for the first …
Ultrafast Laser Spectroscopy Mini Symposium
A mini-symposium on ultrafast laser spectroscopy to bring together the ultrafast laser spectroscopy community in Australia and New Zealand. The event hopes to showcase the various ultrafast laser spectroscopy research and the capabilities that are currently available, or in development, within this region. The symposium will comprise talks from a number of people from each of the key ultrafast laser spectroscopy …
Poster Session 2
First nameSurnameTitlePoster Number DimitrieCulcerMagneto-resistance of topological edge states64 GolAkhgarInvestigating Electronic Structure of Intrinsic Magnetic Topological Insulator: MnBi2Te424 YonatanAshlea AlavaPatterning GaAs heterostructures using anodic oxidation towards the fabrication of Artificial Graphene32 PatjareeAukarasereenont2D TeO2 - a novel high mobility wide bandgap semiconductor22 SemontiBhattacharyyaTowards contacting monolayer TMDC through touch-printed Ga2O3 tunnel barriers16 OlivierBleuQuantum theory of a weakly interacting exciton-polariton condensate44 Shao-YuChenIn situ monitoring ...
Poster Session 1
First nameSurnameTitlePoster Number WafaAfzalMn3Sn films27 GolAkhgarSignatures of Helical Edge Transport in Millimetre-Scale Thin Films of Na3Bi3 ShivananjuBannur NanjundaUltrasensitive and ultrafast optical biosensors based on 2D materials53 TommyBartoloInterplay of Aharonov-Bohm interference and signatures of Majorana fermions25 GaryBeaneTowards the THz time-domain spectroscopy of graphene21 PankajBhallaResonant photovoltaic effect in doped magnetic semiconductors45 SamuelBladwellValley separation via trigonal warping49 MarinaCastelliSurface assisted molecule-molecule hybridization15 Shao-YuChenMany-body correlation ...
Gordon Godfrey Workshop advances Australian quantum physics
Almost 120 researchers gathered in UNSW last week to discuss spin and strong-electron correlations in the university’s biennial Gordon Godfrey Workshop. The 2019 Gordon Godfrey Workshop on Spins and Strong Correlations was held at UNSW’s School of Physics for five days from 25 to 29 November. The Gordon Godfrey Workshops, which have been running since 1991, provide a forum for Australian and international researchers to exchange ideas and …
Three-dimensional electron-hole superfluidity in a superlattice close to room temperature
Prof. David Neilson, University of Antwerp Although there is strong theoretical and experimental evidence for electron-hole superfluidity in separated sheets of electrons and holes at low T, extending superfluidity to high T is limited by strong 2D fluctuations and Berezinskii-Kosterlitz-Thouless topological effects. We show this limitation can be overcome using a superlattice of alternating electron-doped and hole-doped semiconductor monolayers. The superfluid transition in a …