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Instructors: Univ.-Prof. Dr. Mathias Kläui; Dr. Robert Reeve
Event type:
online: Lecture/practice class
Displayed in timetable as:
08.128.7012
Hours per week:
4
Credits:
6,0
Language of instruction:
Englisch
Min. | Max. participants:
- | -
Requirements / organisational issues:
The lecture course will be given in English to cater for students from all backgrounds. The lecture is based on the knowledge acquired during the bachelor's program with the content adjusted based on the prior knowledge of the participants. Time and place may be changed, if necessary, after consultation with the participants. Online material and exercises will be used to deepen the understanding, including elements of blended-learning for portions of the course. Depending on the interest of the participants, hands-on experiments and lab tours, are offered.
Contents:
Advanced materials with properties that result from quantum effects exhibit a range of fascinating properties from complex charge and spin ordering to novel phases of materials, which are often termed quantum matter. Many of these underpin the technology of the world around us and enable new exciting device functionalities and efficiencies for the future. In particular a range of spin-based devices exist and are being developed, which are underpinned by the quantum-mechanical property known as spin. Spin is everywhere – from governing chemical reactions to data storage technology, medical imaging and future quantum computation technologies. The ordering of spin in a material leads to a range of material properties, from ferromagnetism and antiferromagnetism, to more complex forms of magnetic ordering that yield exotic, twisting spin states and quasiparticles such as magnetic skyrmions. Beyond these collective and emergent phenomena, the controlled manipulation of single spins promises new computational paradigms.
In this course, the physics of quantum matter is covered, with a focus on magnetically ordered systems, bridging from the classical description of magnetic materials to magnetic and magnonic spin transport and device applications. The lecture spans the basics up to current applications in microelectronics and medical technology including commercially available magnetic data storage and sensors as well as novel emerging concepts for new efficient and miniaturized devices based on quantum effects ultimately leading to quantum computing paradigma.
All these properties and applications are underpinned by the careful control of the constituent quantum matter. One particularly powerful way of learning about the structure and complex ordering of materials is via the scattering of radiation from that matter. The course will examine the ways in which beams of particles (photons, electrons, neutrons etc.) interact with different materials and how the analysis of scattering patterns reveals the details of the physical, electronic and magnetic spin ordering of the system.
Recommended reading list:
C. Kittel: Solid state physics
J. M. D. Coey: Magnetism and Magnetic Materials
S. Blundell: Magnetism in Condensed Matter
J. Stolze, D. Suter: Quantum Computing
Additional information:
To see what the magnetism part of the course could be good for, have a look at the short motivational movie “Magnetism and Magnetics Technology in the 21st Century” at
https://ieeetv.ieee.org/technology/magnetics-technology-21st-century?rf=channels%7C70&
Digital teaching:
Due to the current restrictions we expect to do the lecturing primarily online. Any students who would like to attend the lecture in person should send an email to the lecturers.
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