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Another Advance on the Road to Spintronics

By Guest PostOctober 21, 2012Sciencealbert einstein, alexander gray, analyzer, basis, berkeley lab, charles fadley, computing industry, contamination, data, dilute, electron, electronic structure, energy conversion, energy-efficient, exchange model, facility, ferromagnetic, gallium arsenide, gallium atom, gamnas, harpes, hyogo, jan minar, Japan, jun fujii, kelvin, magnetic atom, magnetic semiconductor, memory architecture, nanoscale device, new technique, p d, peter stone, photoelectric effect, photoemission, photovoltaic cell, processing, room temperature, shigenori ueda, spin, spintronic application, spintronic technology, spring8, storage, surface reaction, synchrotron radiation, xray angle, yoshiyuki yamashita

Berkeley Lab Researchers Unlock Ferromagnetic Secrets of Promising Materials

Spintronic technology, in which data is processed on the basis of electron “spin” rather than charge, promises to revolutionize the computing industry with smaller, faster and more energy efficient data storage and processing. Materials drawing a lot of attention for spintronic applications are dilute magnetic semiconductors – normal semiconductors to which a small amount of magnetic atoms is added to make them ferromagnetic. Understanding the source of ferromagnetism in dilute magnetic semiconductors has been a major road-block impeding their further development and use in spintronics. Now a significant step to removing this road-block has been taken.

A multi-institutional collaboration of researchers led by scientists at the U.S. Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab), using a new technique called HARPES, for Hard x-ray Angle-Resolved PhotoEmission Spectroscopy, has investigated the bulk electronic structure of the prototypical dilute magnetic semiconductor gallium manganese arsenide. Their findings show that the material’s ferromagnetism arises from both of the two different mechanisms that have been proposed to explain it. (more…)

How Technology is Changing Kenya

It is not often you think about how technology can affect an entire country, but the upsurge of affordable smart phones and portable internet have made a huge impact on the everyday lives on Kenyans. Not only do people now have access to things around the world, but they also have educational and health opportunities they have never had before. The idea of using smart phones as makeshift computers is nothing new, especially in developing countries. Where the income is limited, a smartphone can be a costly expense. However, having access to current technology will allow Kenyans to expand and grow in the world economy. To that end, here are some examples of improvements that new technology has had in the lives of Kenyans: (more…)

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Another Advance on the Road to Spintronics

How Technology is Changing Kenya