History and overview of spin electronics; Classes of magnetic materials; The early history of spin; Quantum Mechanics of spin; The Bloch sphere; Spin-orbit interaction.
Exchange interaction; Spin relaxation mechanisms; spin relaxation in a quantum dots; The spin Galvanic effect; Basic electron transport; Spin-dependent transport; Spin dependent tunneling; Andreev Reflection at ferromagnet and Superconductor interfaces; Spintransfer torques; Spin-transfer drive magnetic dynamics.
Current-driven switching of magnetization and domain wall motion.
Domain wall scattering and Current-Induced switching in ferromagnetic wires; Spin injection, spin accumulation, and spin current, Spin hall effect, Silicon based spin electronic devices, Spin LEDs: Fundamental and applications;
Spin photoelectronic devices based on Heusler alloy, Electron spin filtering, Materials for
spin electronics, Nanostructures for spin electronics, Deposition techniques, micro and nanofabrication techniques, Spin-Valve and spin-tunneling devices: Read Heads, MRAMS, Field Sensors, Spintronic Biosensors, Spin transistors, Quantum Computing with spins.
Topics and Contents
No. of Lectures
Types of magnetic materials and their characteristic features :
A brief introduction to origin of magnetism, magnetic units, different types of magnetic materials such as dia-, para-, ferro-, antiferro-magnetism etc.
Magnetic domains and hysteresis loops:
Demagnetization effects, magneto-static, magnetic anisotropy and exchange energies. Magnetostriction and magnetoelastic energy.