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spintronics

spintronics. By C.ANIL KUMAR (07AG1A0411). Introduction Logic Of Spin Spintronic Devices Computing With Spin Advantages Future Prospect Conclusion. INDEX.

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spintronics

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  1. spintronics By C.ANIL KUMAR (07AG1A0411)

  2. Introduction Logic Of Spin Spintronic Devices Computing With Spin Advantages Future Prospect Conclusion INDEX

  3. As electronic devices become smaller, quantum properties of the wavelike nature of electrons are no longer negligible Conventional electronic devices ignore the spin property and rely strictly on the transport of the electrical charge of electrons Adding the spin degree of freedom provides new effects, new capabilities and new functionalities Spintronic devices offer the possibility of enhanced functionality, higher speed, and reduced power consumption Introduction

  4. Spin relaxation Spin transport Logic of spin

  5. Spintronic devices

  6. sandwich structure Alternating ferromagnetic and non magnetic metal layers parallel and perpendicular current 1.Giant Magnetoresistive(GMR)

  7. Emitter and collector are ferromagnetic with parallel magnetizations The gate provides magnetic field Current is modulated by the degree of precession in electron spin 2. Datta -das spin transistor

  8. Quantum bit or qubits Entanglement A-gates & J-gates Spin based quantum computing

  9. Information is stored into spin as one of two possible orientations Spin lifetime is relatively long, on the order of nanoseconds Spin currents can be manipulated Spin devices may combine logic and storage functionality eliminating the need for separate components Magnetic storage is nonvolatile Binary spin polarization offers the possibility of applications as qubits in quantum computers Advantages

  10. applications

  11. In Material science-Many methods of magnetic doping Large magneto resistance in ferromagnetic semiconductor tunnel junctions. Future prospects

  12. These "Spintronic" devices might lead to quantum computers and quantum communication based on electronic solid-state devices, thus changing the perspective of information technology in the 21st century. conclusion A new class of device based on the quantum of electron spin, rather than on charge, may yield the next generation of microelectronics

  13. Bennett, C. H., and D. P. DiVincenzo. 2000. Quantum information and computation. Nature (404):267. Das Sarma, S., et al. 2000. Theoretical perspectives on spintronics and spin-polarized transport. IEEE Transactions on Magnetics references

  14. Any queries ?

  15. Thank you

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