EPFL physicists have found a way to reverse electron spins using electric fields for the first time, paving the way for programmable spintronics technologies.
Spintronics is a field of physics that studies the spin of electrons, an intrinsic type of magnetism that many elementary particles have. The field of spintronics has given rise to technological concepts of “spintronic devices”, which would run on electron spins, rather than their charge, used by traditional electronics.
In order to build programmable spintronic devices we first need to be able to manipulate spins in certain materials. So far, this has been done with magnetic fields, which are not easy to integrate into everyday applications.
In a new set of experiments, an international team of physicists led by Hugo Dil at EPFL have now demonstrated the ability to control what they call “the spin landscape” using electric fields. They accomplished this in a new class of materials based on germanium telluride (GeTe), which is the simplest ferroelectric material operating at room temperature.
The scientists used a technique called spin- and angle-resolved photoemission spectroscopy (SARPES), which can measure the spin of electrons, and has been perfected by Dil’s lab. By combining SARPES with the possibility to apply an electric field, the physicists demonstrate electrostatic spin manipulation in ferroelectric ?-GeTe and multiferroic (GeMn)Te.
In addition, the scientists were able to follow the spins’ switching pathway in detail. In (GeMn)Te, the perpendicular spin component switches due to electric-field-induced magnetization reversal. This provides firm evidence of magneto-electric coupling, which opens up the possibility of programmable semiconductor based spintronics.
“Our previous work showed that magnetic fields can control spins in these materials,” says Dil. “And now we’ve shown that spin manipulation is also possible using electric fields. Our experimental findings open up a promising path to only use electric fields in a spintronics device, strongly reducing the energy consumption.”
Receive an email update when we add a new PROGRAMMABLE SPINTRONICS article.
The Latest on: Programmable spintronics
via Google News
The Latest on: Programmable spintronics
- Controlling magnetic spin with electric fields on June 19, 2018 at 8:44 am
EPFL physicists have found a way to reverse electron spins using electric fields for the first time, paving the way for programmable spintronics technologies. In order to build programmable spintronic ... […]
- Menta and LIRMM Launch MRAM-based FPGA on June 7, 2018 at 5:00 pm
Menta and LIRMM Launch Manufacturing of World’s First MRAM-based FPGA MONTPELLIER, France, June 9, 2010 — Menta SAS and LIRMM, an embedded programmable logic provider ... the large scale initiative fo... […]
- Diamonds boost processing speeds in quantum computers on November 24, 2017 at 4:00 pm
Scientists at UC Santa Barbara have made important advances in the field of spintronics by demonstrating the ability ... The world's first programmable quantum computer, which we covered last week, di... […]
- Multiple Scattering description of Ballistic Electron Emission Miscroscope for materials used in spin injection on October 17, 2016 at 5:00 pm
Spintronics is now a major challenge at the international ... This will lead to a whole new family of much faster devices, working at low power, including programmable spin transistors. It has been de... […]
- Chips ‘Inspired’ By The Brain Could Be Computing’s Next Big Thing on October 25, 2013 at 6:27 pm
This article is part of ReadWrite Future Tech, an annual series where we explore ... Intel’s “neuromorphic” chip architecture is based on “spin devices.” Essentially, “Spintronics” takes advantage of ... […]
- 7 Cash-Loaded Tech Stocks With Strong Earnings on September 24, 2012 at 5:34 pm
1) Altera Corp. (NASDAQ:ALTR) Key Metrics Altera Corporation, a semiconductor company, designs, manufactures, and markets programmable logic devices ... in the development and sale of devices that use ... […]
- IBM Researchers Confirm Decade-Old Theory of Locking Electron Spin Rotation on August 12, 2012 at 5:00 pm
IBM is again taking the lead in spintronics research. Researchers at IBM Zurich ... important step in the development of spin-based transistors that are electrically programmable.” The researchers wer... […]
- Scientists "waltz" closer to using spintronics in computing on August 12, 2012 at 2:39 pm
This new understanding in spintronics not only gives scientists unprecedented ... an important step in the development of spin-based transistors that are electrically programmable." IBM scientists use... […]
- NVE's CEO Discusses F2Q 2011 Results - Earnings Call Transcript on October 19, 2011 at 6:10 pm
Most of our products are fabricated in our facility using either raw silicon wafers or foundry wafers and rebuild the spintronics structures and ... office of the Secretary of Defense titled Field Pro... […]
via Bing News