Below you'll find a list of all posts that have been categorized as “Topological Dissipationless”
Significant step toward future topological electronics The first electric field-switchable topological material Topological transistors would be an ultra-low energy , beyond CMOS solution to ICT energy use after the end of Moore’s Law Over the last decade, there has been much excitement about the discovery, recognised by the Nobel Prize in Physics only two years ago, that there are two …
Half of the 2018 Nobel Prize for Physics has been awarded to Gérard Mourou and Donna Strickland for their method of generating high-intensity, ultra-short optical pulses Ultra-fast laser physics key to development of future electronics The technique developed by Mourou and Strickland has had enormous impact across the fields of chemistry, physics and biology, and provides the basis for important …
First year physics students enthusiastic to explore ‘new’ physics Measuring quantum Hall effect with liquid helium-3, a Cold War side-product Window to topological materials and future electronics UNSW first year physics students have been measuring the quantum Hall effect (QHE), a relatively new piece of physics recognised by the 1985 Nobel Prize in Physics, which requires precision experimental setup. When …
Published in Monash Lens 27 Sep 2018 Featuring Meera Parish & Michael Fuhrer, School of Physics & Astronomy, Monash University Cheaper, faster, smarter, smaller – the ever-evolving digital world has changed the way we live, as predicted by the law Gordon Moore outlined in 1965. Moore’s Law foretold that the number of transistors in a dense integrated circuit would double …
Why 2D? What is it about two-dimensional materials that makes them so interesting for FLEET? FLEET UNSW/Wollongong collaboration finds transition point from 3D to 2D properties Constraining the movement of charge carriers (electrons or holes) to two dimensions unlocks unusual quantum properties, resulting in useful electronic properties. Although we refer to the layers within such materials as ‘2D’, they are …
FLEET RMIT—UNSW collaboration measuring transport properties of van der Waals heterostructures FLEET PhD Cheng Tan (RMIT) visited UNSW’s labs in May to perform magnetic coupling measurements on 2D ferromagnetic crystals. The visit was reciprocated this month with FLEET Research Fellow Feixiang Xiang (UNSW) visiting RMIT to construct van der Waals structures for studying of 2D topological systems. This collaboration between …
In the popular movie franchise “Back to the Future”, an eccentric scientist creates a time machine that runs on a flux capacitor. Now a group of actual physicists from Australia and Switzerland have proposed a device which uses the quantum tunneling of magnetic flux around a capacitor, breaking time-reversal symmetry. The research, published this week in Physical Review Letters, proposes …
FLEET Chief Investigator Agustin Schiffrin spoke on science show Einstein a Go-Go about experimental physics at the atomic scale, and the study of exciting new nanomaterials with tailored electronic properties. Listen Agustin researches new nanomaterials with novel and exotic electronic properties, constructed of organic (carbon-based) molecules, sometimes inspired by bio-organisms. The team studies topological materials, which display a range of fascinating, …
Applying an electric field switches conduction mode of a topological material FLEET researchers achieved a significant landmark in the search for a functional topological transistor in 2017, using an applied electric field to switch the electronic conduction mode of a topological material. A ‘gate’ electrode was used to switch the conduction mode in the topological material Na3Bi. Na3Bi is a …
Congratulations to FLEET UNSW postdoc Harley Scammell who has been awarded a Fulbright Scholarship to work with world-renowned theoretical physicist Subir Sachdev at Harvard University on the mechanisms behind superconductivity – an exotic quantum phase of matter. The Australian-American Fulbright Commission promotes education and cultural exchange between Australia and the US, By the completion of the Fulbright program, researchers around …
FLEET researchers undertake various research projects in the area of Topological Materials. If you have a project that would fit this theme, find information about a potential supervisor here: PROF. MICHAEL FUHRER Experiments on electronic devices made from novel two-dimensional materials such as graphene, layered transition metal dichalcogenides, topological insulators. Scanning tunnelling microscopy. Surface science A/PROF. NIKHIL MEDHEKAR Computational mechanics …
UNSW researchers solve a 10-year-old mystery in the way nanoscale transistors work. Half of all the transistors in your iPhone use positively-charged ‘holes’, rather than negatively-charged electrons to operate. At university, we teach undergraduates that holes are quasiparticles, basically ‘missing electrons’ – a bit like the bubble in a spirit level, or the missing chair in a game of musical …
FLEET’s mission to create ultra-low energy electronics depends on an improved fundamental understanding of the electronic structure of atomically-thin, two-dimensional materials. We need to understand how electrons in the material interact with each other and also how they move and scatter through the crystal lattice. FLEET researchers using the vacuum ultraviolet the UV beamline 10.0.1 (HERS) at the Advanced Light …
There is considerable excitement about graphene-based biosensors. In particular, the material’s unique structure and electronic properties offers great potential for rapid, reliable DNA/RNA sensing and sequencing. To date, this potential has been checked by a lack of fundamental understanding of graphene−nucleobase interactions and the origin of measured molecular fingerprints. A recent study has defined key interactions as DNA/RNA nucleobases are …
A UNSW study published last Friday presents an exciting step towards a novel form of electronics based on nano-scale, ‘disappearing’ conduction paths that could allow for extremely dense memory storage. It’s based on domain walls, which are atomically sharp topological defects separating regions of uniform polarisation in ferroelectric materials. The domain walls are electrically conductive, while the surrounding of the wall …
Spin-orbit interaction (SOI), is the interplay between electrons’ inherent angular momentum (their quantum spin) and their orbit around an atom’s nucleus. This interaction is key to the function of topological materials, which are studied at FLEET for their potential to form ultra-low resistance pathways for electrical current. A recent study investigated the relationship between spin-orbit interactions in gallium arsenide quantum …
A study by FLEET’s UNSW researchers looked at spin-orbit interaction at the two-dimensional interface between common semiconductor materials. A new semi-analytical method was developed for analysis. Spin-orbit interaction (SOI), is the interplay between electrons’ inherent angular momentum (their quantum spin) and their orbit around an atom’s nucleus. This interaction is key to the function of topological materials, which are studied …
