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TABLE OF CONTENTS
CHAPTER TITLE PAGE
NO.ABSTRACT i
ACKNOWLEDGEMENT ii
TABLE OF CONTENTS iii
1 INTRODUCTION
1.1 HISTORY
1.1.1 Moore’s Law
1.1.2 Gate Width
1.1.3 Why Spintronics
1
1
2
2
2 SPINTRONICS
2.1 DEFINITION 4
2.2 IDEA BEHIND SPINTRONICS 4
2.3 CONCEPT OF SPINTRONICS
2.3.1 Electron Charge Distribution
2.3.2 Photon Theory
2.3.3 Electron Spin Theory
2.3.4 Zeeman Effect
2.3.5 Spin-Statistics Theorem
2.3.6 Spin Polarization
2.3.7 Fundamentals of Spin
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7
7
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12
2.4 QUANTUM TUNNELING 13
2.5 WAVE –PARTICLE DUALITY 15
3 R&D ON SPINTRONICS
3.1 RESEARCH AREAS 16
3.2 REQUIREMENTS 18
3.3 SPIN MATERIALS
3.3.1 Ferromagnetic Semiconductors
3.3.2 Half-Magnetic Semiconductors
18
18
19
4 DEVICES AND APPLICATIONS
4.1 SPIN DEVICE
4.1.1 Giant Magneto Resistance
4.1.2 Magnetic Tunnel Junction
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22
4.2 SPIN APPLICATIONS
4.2.1 MRAM
4.2.2 Spin FET
4.2.3 Spin LED
4.2.4 GMR Sensors
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25
5 PROS And CONS
5.1 ADVANTAGES
5.2 DISADVANTAGES
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26
6 CONCLUSION
27
REFERENCES 28