Magnetic Nanostructures for Emerging Technologies: Experimental and Theoretical studies. This project enables collaborations between Australian and European groups in an important and expanding area at the forefront of technology, and facilitates access to state of the art resources in laboratories in Austria and Spain. It carries across knowledge in synchrotron techniques just at the right time, just before the Australian synchrotron goes on line in 2008, allowing time to deepen expertise and t ....Magnetic Nanostructures for Emerging Technologies: Experimental and Theoretical studies. This project enables collaborations between Australian and European groups in an important and expanding area at the forefront of technology, and facilitates access to state of the art resources in laboratories in Austria and Spain. It carries across knowledge in synchrotron techniques just at the right time, just before the Australian synchrotron goes on line in 2008, allowing time to deepen expertise and to obtain specific knowledge. It will help establish a new effort at the University of Western Australia concentrated on developing advanced materials for technology. We will make important contributions to an internationally important area and offer high quality interdisciplinary research training in magnetic nanomaterials science.Read moreRead less
Fast and slow dynamics at coupled magnetic interfaces: Theory and Experiment. Immediate needs for advances in materials for spin electronics and information technology require a deeper physical understanding of new materials in which interfaces and nanometre dimensions determine properties. Interfacial exchange coupling between magnetic layers is a key issue in the formation of many multilayer structures, and several important issues remain unresolved. This is a proposal for a joint theoretical ....Fast and slow dynamics at coupled magnetic interfaces: Theory and Experiment. Immediate needs for advances in materials for spin electronics and information technology require a deeper physical understanding of new materials in which interfaces and nanometre dimensions determine properties. Interfacial exchange coupling between magnetic layers is a key issue in the formation of many multilayer structures, and several important issues remain unresolved. This is a proposal for a joint theoretical and experimental study of technologically important magnetic interfaces by groups at Universities of Florence, Perugia, Leeds and Western Australia.Read moreRead less
High Resolution Imaging and Analysis of Embedded Interfaces and Interface Phase Transitions in Interface-Dominated Nanomaterials. Heterogeneous nanostructured materials and assemblies offer unique structure-property relationships, dominated by the internal interfaces they contain. This interdisciplinary research project will combine novel techniques based on high-resolution phase-retrieval x-ray diffraction and imaging, with complementary analytical electron microscopy and atom probe analysis, i ....High Resolution Imaging and Analysis of Embedded Interfaces and Interface Phase Transitions in Interface-Dominated Nanomaterials. Heterogeneous nanostructured materials and assemblies offer unique structure-property relationships, dominated by the internal interfaces they contain. This interdisciplinary research project will combine novel techniques based on high-resolution phase-retrieval x-ray diffraction and imaging, with complementary analytical electron microscopy and atom probe analysis, in a coordinated study of the structure and properties of embedded interfaces in strategic bi-crystals and nanostructures. It promises new techniques for the study of such defects, and a breakthrough in the understanding of the structural transitions that occur in embedded interfaces as a function of local changes in composition and temperature.Read moreRead less
Magnetic ground state and dynamics in high temperature superconductors. This project is aimed at studies of novel advanced materials. It will contribute to research at the leading edge of fundamental physics. This is an international project that incorporates collaboration with two leading German experimental groups. This raises the profile of the project internationally. This collaboration may bring some experiments of overseas scientists to ANSTO OPAL reactor and hence facilitate interactions ....Magnetic ground state and dynamics in high temperature superconductors. This project is aimed at studies of novel advanced materials. It will contribute to research at the leading edge of fundamental physics. This is an international project that incorporates collaboration with two leading German experimental groups. This raises the profile of the project internationally. This collaboration may bring some experiments of overseas scientists to ANSTO OPAL reactor and hence facilitate interactions between Australian and overseas experimental groups.Read moreRead less
Does High Temperature Superconductivity Reside in Plane or Charge Reservoir (CR) Oxygen, in YBa2Cu3O7 (YBC)? One of the outstanding problems in contemporary solid state physics concerns the mechanism of high temperature superconductivity (HTS). In particular, what binds charges that normally repel one another, into (Cooper) pairs? Closely related to this question is where the superconductivity resides in the material. We aim to answer the latter question in the much studied prototypical HTS YBa2 ....Does High Temperature Superconductivity Reside in Plane or Charge Reservoir (CR) Oxygen, in YBa2Cu3O7 (YBC)? One of the outstanding problems in contemporary solid state physics concerns the mechanism of high temperature superconductivity (HTS). In particular, what binds charges that normally repel one another, into (Cooper) pairs? Closely related to this question is where the superconductivity resides in the material. We aim to answer the latter question in the much studied prototypical HTS YBa2Cu3O7. In doing so we expect to demonstrate that phonons, widely believed not to play a role in HTS are in fact an important component in the HTS pairing mechanism.Read moreRead less
Spin dependent transport in magnetic nanostructures. The ability to use electron spin in electronic circuits has opened new possibilities for designing devices. A well known example is the giant magnetoresistance, a phenomena discovered over fifteen years ago that now plays a key role in current high density magnetic disc drives. Future developments will involve spin dependent transport through structures wherein quantum interference effects will be important. Two basic problems facing the cons ....Spin dependent transport in magnetic nanostructures. The ability to use electron spin in electronic circuits has opened new possibilities for designing devices. A well known example is the giant magnetoresistance, a phenomena discovered over fifteen years ago that now plays a key role in current high density magnetic disc drives. Future developments will involve spin dependent transport through structures wherein quantum interference effects will be important. Two basic problems facing the construction of a complete theory of transport in such ?mesoscopic? conductors will be solved in this project. The results will provide important insights into the dynamics of spin transport through structures such as magnetic nano-wires.Read moreRead less
Theoretical studies of strongly correlated quantum states in novel condensed matter systems. Strongly correlated quantum electronic and magnetic systems represent one of the most active and exciting areas of condensed matter physics, and one that will continue to have a major bearing on technology. We will pursue an extensive program of research into many aspects of this field, using a variety of analytical and numerical methods, in many of which we are among the world leaders. The project will ....Theoretical studies of strongly correlated quantum states in novel condensed matter systems. Strongly correlated quantum electronic and magnetic systems represent one of the most active and exciting areas of condensed matter physics, and one that will continue to have a major bearing on technology. We will pursue an extensive program of research into many aspects of this field, using a variety of analytical and numerical methods, in many of which we are among the world leaders. The project will add significantly to understanding of the physics of quantum phase transitions, spin-liquids, novel superconductors, and other related phenomena, and of the properties of quantum lattice models.Read moreRead less
Interlayer magnetoresistance of strongly correlated electron materials. The continued rapid expansion of information and entertainment technology requires new materials and devices for information storage. State of the art computer and iPod memories utilise advanced materials composed of layers of atoms, recognised by the 2007 Nobel Prize in Physics. These materials have metallic properties quite unlike those of simple metals such as copper and brass. This research will lead to a greater underst ....Interlayer magnetoresistance of strongly correlated electron materials. The continued rapid expansion of information and entertainment technology requires new materials and devices for information storage. State of the art computer and iPod memories utilise advanced materials composed of layers of atoms, recognised by the 2007 Nobel Prize in Physics. These materials have metallic properties quite unlike those of simple metals such as copper and brass. This research will lead to a greater understanding of and ability to design the next generation of materials. Australia's capacity for research and development in this scientifically challenging and technologically important field will be enhanced by this project. Read moreRead less
The theory of interferometers in nano-scale electronics. Soon the electronic circuits in computer chips will be so small that new effects due to quantum phyiscs will become important.
The proposed research will provide a better understanding of a range of nano-scale electronic devices including electron interferometers based on quantum points contacts and quantum dots.
Sepcifically, a new understanding of quantum coherent phenomena
in nano-scale interferometers will offers a potential ap ....The theory of interferometers in nano-scale electronics. Soon the electronic circuits in computer chips will be so small that new effects due to quantum phyiscs will become important.
The proposed research will provide a better understanding of a range of nano-scale electronic devices including electron interferometers based on quantum points contacts and quantum dots.
Sepcifically, a new understanding of quantum coherent phenomena
in nano-scale interferometers will offers a potential application
to other quantum technologies important to the future
of computing.
Read moreRead less
Electrodynamics of the High Latitude Ionosphere. Electrical power (~10^12 W on average), incident over the high latitude ionospheres drives auroral displays, causes magnetic disturbances and other space weather effects over the globe, including Australia. This project uses Iridium, a US$6 billion, commercial satellite constellation, to study energy deposition into the ionosphere from near-Earth space. The Iridium data is not public domain. This project provides data access, representing a signif ....Electrodynamics of the High Latitude Ionosphere. Electrical power (~10^12 W on average), incident over the high latitude ionospheres drives auroral displays, causes magnetic disturbances and other space weather effects over the globe, including Australia. This project uses Iridium, a US$6 billion, commercial satellite constellation, to study energy deposition into the ionosphere from near-Earth space. The Iridium data is not public domain. This project provides data access, representing a significant cost-effective way for Australia to participate in observational space science. Australian postgraduate training is an integral part of the project, providing international level access and interpretation of scientific satellite and over the horizon radar network data.Read moreRead less