We provide a perspective on the recent emergence of “topological spintronics,” which relies on the existence of helical Dirac electrons in condensed matter. Spin- and angle-resolved photoemission spectroscopy shows how the spin texture of these electronic states can be engineered using quantum tunneling  or by breaking time-reversal symmetry . Inappropriately designed systems, broken time-reversal symmetry transforms helical Dirac states into chiral edge states, a realization of Haldane’s Chern insulator phase of matter. This is characterized by a precisely...
We are at a time where the electronics industry is feeling pressure from two sides on the small scale we are facing the fundamental physical limits of silicon, and on the large scare we are facing new, abundant-data and distributed-data applications, such as for the internet of things. The future of computing will require both more energy efficient electronics and more big-data driven, application-specific designs.
Magnetic devices are a promising candidate for future electronics, due to their low-voltage operation...
When it comes to computers, people never look for “bigger and better,” but rather “smaller and faster.” How do we continue to keep up with that demand, making technology smaller, faster, and more energy-efficient? According to Vincent Sokalski, the answer may be in the fundamental origins of magnets—the spin of electrons.
Sokalski and his group studied the interaction of electron spins in magnetic materials poised for use in next-generation cellphones and computers and discovered how to better measure and predict the changing magnetic state of those materials. This new understanding, recently published in Physical Review B under the title "Energetic Molding of Chiral Magnetic Bubbles", is exciting for the future of computing technology because it will allow scientists to explore and develop materials that are more energy-efficient and faster than traditional semiconductor-based materials.
“The computers of the future may be born in Sara Majetich’s labs” reads the header of a recent news article.
For the past three years, Majetich has been a principal investigator for the Center for Spintronic Materials, Interfaces, and Novel Architectures (C-SPIN), which coordinates the research of 32 professors from 18 universities towards overcoming the limits of traditional computer design with spintronic technology.