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Spin Electronics (Hardcover, 2004 ed.)
Loot Price: R2,915
Discovery Miles 29 150
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Spin Electronics (Hardcover, 2004 ed.)
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The history of scientific research and technological development is
replete with examples of breakthroughs that have advanced the
frontiers of knowledge, but seldom does it record events that
constitute paradigm shifts in broad areas of intellectual pursuit.
One notable exception, however, is that of spin electronics (also
called spintronics, magnetoelectronics or magnetronics), wherein
information is carried by electron spin in addition to, or in place
of, electron charge. It is now well established in scientific and
engineering communities that Moore's Law, having been an excellent
predictor of integrated circuit density and computer performance
since the 1970s, now faces great challenges as the scale of
electronic devices has been reduced to the level where quantum
effects become significant factors in device operation. Electron
spin is one such effect that offers the opportunity to continue the
gains predicted by Moore's Law, by taking advantage of the
confluence of magnetics and semiconductor electronics in the newly
emerging discipline of spin electronics. From a fundamental
viewpoine, spin-polarization transport in a material occurs when
there is an imbalance of spin populations at the Fermi energy. In
ferromagnetic metals this imbalance results from a shift in the
energy states available to spin-up and spin-down electrons. In
practical applications, a ferromagnetic metal may be used as a
source of spin-polarized electronics to be injected into a
semiconductor, a superconductor or a normal metal, or to tunnel
through an insulating barrier.
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