Instructors: apl. Prof. Dr. Martin Jourdan
Event type:
online: Lecture/practice class
Displayed in timetable as:
08.128.7014
Hours per week:
4
Credits:
6,0
Language of instruction:
German
Min. | Max. participants:
- | -
Requirements / organisational issues:
Previous knowledge from Experimental Physics 5c (condensed matter physics) is recommended but not required.
Topics:
Chapter 1: Overview - Introduction
Chapter 2: Fundamentals - single individual magnetic moments.
Units, Magnetic Moments of Atoms, Spin-Orbit Coupling, Hund Rules, Zeeman Splitting
Chapter 3: Electronic states and magnetic moments in the periodic potential of solids
Essentials of Bloch theory, tight binding band structure, crystal electric field
Chapter 4: Ensembles of individual magnetic moments
Paramagnetism of localized moments, paramagnetism of conduction electrons, diamagnetism
Chapter 5: Coupled magnetic moments – magnetic ordering
Dipole-Dipole interaction, exchange interaction, Mean field model of ferromagnetism and antiferromagnetism, Band (Stoner) model of ferromagnetism, magnetic excitations (magnons)
Chapter 6: Hard Disk Drive – multidomain states and magnetoresistance effects
Micromagnetic energy terms, magnetic domains and domain walls, Stoner Wohlfarth systems, anisotropic magnetoresistance (AMR), giant magnetoresistance (GMR), tunneling magnetoresistance (TMR)
Chapter 7: Magnetic Random Access Memory – torques and dynamics
Spin-transfer torque, spin-orbit torque, Landau-Lifshitz-Gilbert equation
Chapter 8: Recent developments in quantum spintronics
Logic gates, Skyrmions, antiferromagnetic spintronics, spin quantum bits
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