Teaching methods
- 28 hrs lecture
- 28 hrs problem session
|
Pre-requisites
Quantum mechanics; Introduction to Solid State Physics
|
Objectives
- The student has a knowledge about the basic magnetic interactions
- The student can apply the acquired knowledge to solve basic problems
- The student should be able to understand the recent discoveries in the area of magnetism
- The student is able to read and understand the articles in leading scientific journals
|
Contents
Magnetism is a phenomenon that has intrigued mankind since millennia and has found a large variety of applications ranging from the compass to hard disks. Modern preparation techniques have allowed the fabrication of magnetic structures with typical dimensions that are small compared to fundamentallength scales such as exchange length, mean free paths or spin diffusion length, which have led to exciting new effects like giant magneto-resistance and spin injection. The importance of such phenomena has been recognized in the Nobel prize 2007.
This course will cover several topics of magnetism in nanodimensions, starting from basics. Special attention will be on the formation of the magnetic moments as well as on various aspects of magnetization dynamics. It will also include a review of experimental approaches.
|
Subjects
- quantum mechanics: spin-spin and spin-orbit interactions
- exchange and anisotropy
- magnetic order: ferro-, ferri, and antiferromagnets - dimension dependence
- superparamagnetism
- spin waves in nanoelements
- magnetization dynamics: domain wall, spin precession, spin heating, etc.
- magnetic quantum phenomena
- preparation and magnetic and structural characterization techniques
- magneto-optics as important tool for ultrafast dynamics studies
- utilization: are we going to have a magnetic computer?
|
Examination
Combination of a written short report, 15 minutes oral presentation on a selected subject, oral exam, and the work during the semester
|
Literature
Lecture notes are handed out at every lecture; blackboard will also be used for the lecture notes and extra material
As extra reading: - S.V. Vonsovskii, Magnetism, John Wiley & Sons, New York, 1974
- S. Chikazumi, Physics of Ferromagnetism, Clarendon Press, Oxford, 1997
- D. Craik, Magnetism: Principles and Applications, John Wiley & Sons, New York, 1995
- D.C. Mattis, The theory of magnetism, Harper & Row, New York, 1965
- J. Stöhr and H.C. Siegmann, Magnetism: from fundamentals to nanoscale dynamics, Springer, 2006
|
