Spintronics in nanostructures
Ulrich Zuelicke
[email protected]
Institute of Fundamental Sciences, Massey University, Palmerston North, New Zealand
and
MacDiarmid Institute of Advanced Materials and Nanotechnology
Outline
Introduction
electron spin + electronics = spintronics (S. Wolf, 1996)
magnetoelectronics and its applications
Magnetoelectronics with new magnets
ferromagnetic semiconductors
organic spintronics
Spintronics from spin interference
spin-dependent electron interferometers
entanglement generatio ....etc

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Definition
Since the dawn of time, man has tried to record important events and techniques for everyday life. At first, it was sufficient to paint on the family cave wall how one hunted. Then came the people who invented spoken languages and the need arose to record what one was saying without hearing it firsthand. Therefore, years later, earlier scholars invented writing to convey what was being said. Pictures gave way to letters which represented spoken sounds. Eventually clay tablets gave way to parchment, which gave way to paper. Paper was ....etc

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Electroplating
The chemical conversion of ions in solution into a solid deposit of metal atoms with the work of a electrical power supply
Amount of Deposition
The number of atoms deposited is proportional to the number of electrons passed through the circuit
- We can determine this by measuring the current
Amount of Deposition (cont.)
Note that these equations assume 100% current efficiency (CE) - that is, assuming that all of the electrons are used for converting metal ions. However, another redu ....etc

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While magnetic and semi-conductor based information storage devices have been in use since the middle 1950 s, today s computers and volumes of information require increasingly more efficient and faster methods of storing data. While the speed of integrated circuit random access memory (RAM) has increased steadily over the past ten to fifteen years, the limits of these systems are rapidly approaching. In response to the rapidly changing face of computing and demand for

· physically smaller,

· greater capacity,

 ....etc

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Computer Memory Based on the Protein Bacteriorhodopsin


While magnetic and semi-conductor based information storage devices have been in use since the middle 1950's, today's computers and volumes of information require increasingly more efficient and faster methods of storing data. While the speed of integrated circuit random access memory (RAM) has increased steadily over the past ten to fifteen years, the limits of these systems are rapidly approaching. In response to the rapidly changing face of computing and demand for

· ....etc

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The ability of molecules to serve as computer switches has been a major area of scientific research since the middle of the last century. Molecular switches, if these become a reality, will offer appreciable reduction in hardware size, since these are themselves very small. One can then imagine of bimolecular computer about 1/20th the size of present-day semiconductor-based computers. Small size and fast operation will account for the development of most modern computers. ....etc

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Protein based nanostructures
Applications
Disadvantages
Types ....etc

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Protein-based optical memory storage

While magnetic and semi-conductor based information storage devices have been in use since the middle 1950 s, today s computers and volumes of information require increasingly more efficient and faster methods of storing data. While the speed of integrated circuit random access memory (RAM) has increased steadily over the past ten to fifteen years, the limits of these systems are rapidly approaching. In response to the rapidly changing face of computing and dema ....etc

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