Navigation Links
Creating unconventional metals
Date:8/20/2008

The semiconductor silicon and the ferromagnet iron are the basis for much of mankind's technology, used in everything from computers to electric motors. In this week's issue of the journal Nature (August 21st) an international group of scientists, including academic and industrial researchers from the UK, USA and Lesotho, report that they have combined these elements with a small amount of another common metal, manganese, to create a new material which is neither a magnet nor an ordinary semiconductor. The paper goes on to show how a small magnetic field can be used to switch ordinary semiconducting behaviour (such as that seen in the electronic-grade silicon which is used to make transistors) back on.

The new material exists in a quantum halfway house between magnet and semiconductor - in the same way that much more complex materials such as ceramics which exhibit high temperature superconductivity exist in quantum halfway houses between metals and magnetic insulators. The research is of fundamental importance because it demonstrates, for the first time, a simple recipe for reaching this halfway house, whilst also suggesting new mechanisms for controlling electrical currents and magnetism in semiconductor devices.

Professor J.F. DiTusa of Louisiana State University and a co-author of the paper said: "It's amazing that something which was thought to exist theoretically in mathematical physics could actually be found in an alloy which was simply formed by melting together a few common elements."

Professor Gabriel Aeppli of UCL (University College London), another member of the research team and Director of the London Centre for Nanotechnology, added: "It might be possible to see similar effects in devices made using materials and methods found in laser pointers. This would put what we've seen firmly in the realm of that which can easily be achieved using current technologies."

The first author of the paper, Dr. N. Manyala of the National University of Lesotho, said: "We are looking forward to investigating whether we can see these effects using thin layers of the same materials deposited directly on the silicon wafers. These wafers are the same as those used by mass market electronics manufacturers as the basis for integrated circuits." Dr. Ramirez, who is now with LGS-Bell Labs Innovations echoed this thought, noting that, "with the end of Moore's law in sight, mechanisms for controlling and understanding possible new information bits such as spins in solids are actively being sought after."


'/>"/>

Contact: Dave Weston
d.weston@ucl.ac.uk
44-020-767-97678
University College London
Source:Eurekalert  

Related biology technology :

1. Pilot Therapeutics Announces New Executive Team with Extensive Experience Creating New Health and Nutrition Businesses
2. The sensitive side of carbon nanotubes: Creating powerful pressure sensors
3. Creating the Bionic Woman: Making Nerves Spring Back to Life
4. Purdue creating wireless sensors to monitor bearings in jet engines
5. For creating new field of science, Texas chemist wins international prize
6. Ohio Task Force Begins Mission of Creating a New 21st Century Industry
7. Appature Announces onKey as an Innovative Platform for Creating Microsoft HealthVault-Compatible Applications
8. TCN e-Systems Offers Trial Sponsors Solutions for Creating In-House Center of Excellence in Patient Recruitment
9. In novel playground, metals are formed into porous nanostructures
10. Metals shape up with a little help from friends
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Creating unconventional metals
(Date:2/24/2017)... ... February 24, 2017 , ... FireflySci, Inc is an explosive small business ... had the goal of bringing their powerful cuvette and spectrophotometer calibration to ... that FireflySci is going on as they add yet another mark on the global ...
(Date:2/23/2017)... RAFAEL, Calif., Feb. 23, 2017 ... U.S. dollars, except per share data, unaudited)Three Months Ended ... ChangeTotal BioMarin Revenue $   ...   22832%$ 1,117$   89026%Aldurazyme Net Product Revenue ... 906538%34823946%Naglazyme Net Product Revenue  ...
(Date:2/23/2017)... Feb. 23, 2017  Seattle,s upscale Capitol Hill neighborhood, with its ... place for a head lice treatment salon to set up ... Tuscan restaurant and a French bistro on E Madison Ave, ... aren,t just any old lice clinic, we pride ourselves on ... and release some of the stigma associated with lice. Everyone ...
(Date:2/23/2017)... ... February 23, 2017 , ... ... insulin, cortisol, CRP, adiponectin, uric acid, and/or other biomarkers or SNPs of interest) ... from Salimetrics’ SalivaLab , the relationship between insulin and other relevant biomarkers ...
Breaking Biology Technology:
(Date:2/6/2017)... 6, 2017 According to Acuity Market ... border authorities to continue to embrace biometric and ... 2143 Automated Border Control (ABC) eGates and 1436 ... more than 163 ports of entry across the ... achieving a combined CAGR of 37%. APC Kiosks ...
(Date:2/2/2017)... 2017  Central to its deep commitment to ... The Japan Prize Foundation today announced the laureates ... the envelope in their respective fields of Life ... are being recognized with the 2017 Japan Prize ... contribute to the advancement of science and technology, ...
(Date:1/26/2017)... -- Acuity Market Intelligence today released the 2017 "Ten ... characterizes 2017 as a "breakout" year for biometrics ... new understanding of the potential benefits these technologies ... are often perceived as threats to privacy and ... Acuity Market intelligence. "However, taken together these technologies ...
Breaking Biology News(10 mins):