aster.cloud aster.cloud
  • /
  • Platforms
    • Public Cloud
    • On-Premise
    • Hybrid Cloud
    • Data
  • Architecture
    • Design
    • Solutions
    • Enterprise
  • Engineering
    • Automation
    • Software Engineering
    • Project Management
    • DevOps
  • Programming
    • Learning
  • Tools
  • About
  • /
  • Platforms
    • Public Cloud
    • On-Premise
    • Hybrid Cloud
    • Data
  • Architecture
    • Design
    • Solutions
    • Enterprise
  • Engineering
    • Automation
    • Software Engineering
    • Project Management
    • DevOps
  • Programming
    • Learning
  • Tools
  • About
aster.cloud aster.cloud
  • /
  • Platforms
    • Public Cloud
    • On-Premise
    • Hybrid Cloud
    • Data
  • Architecture
    • Design
    • Solutions
    • Enterprise
  • Engineering
    • Automation
    • Software Engineering
    • Project Management
    • DevOps
  • Programming
    • Learning
  • Tools
  • About
  • Technology

New Quantum Magnet Unleashes Electronics Potential

  • aster.cloud
  • July 27, 2023
  • 5 minute read

Julianna Mullen | Plasma Science and Fusion Center
MIT News (https://news.mit.edu/2023/new-quantum-magnet-unleashes-electronics-potential-0725)

Researchers discover how to control the anomalous Hall effect and Berry curvature to create flexible quantum magnets for use in computers, robotics, and sensors.


Partner with aster.cloud
for your next big idea.
Let us know here.



From our partners:

CITI.IO :: Business. Institutions. Society. Global Political Economy.
CYBERPOGO.COM :: For the Arts, Sciences, and Technology.
DADAHACKS.COM :: Parenting For The Rest Of Us.
ZEDISTA.COM :: Entertainment. Sports. Culture. Escape.
TAKUMAKU.COM :: For The Hearth And Home.
ASTER.CLOUD :: From The Cloud And Beyond.
LIWAIWAI.COM :: Intelligence, Inside and Outside.
GLOBALCLOUDPLATFORMS.COM :: For The World's Computing Needs.
FIREGULAMAN.COM :: For The Fire In The Belly Of The Coder.
ASTERCASTER.COM :: Supra Astra. Beyond The Stars.
BARTDAY.COM :: Prosperity For Everyone.

Caption:In a graphic representation of a two-dimensional material, squeezing and stretching leads to, respectively, positive and negative signs of the anomalous Hall effect, represented by arrows. Credits:Image: Hang Chi

Some of our most important everyday items, like computers, medical equipment, stereos, generators, and more, work because of magnets. We know what happens when computers become more powerful, but what might be possible if magnets became more versatile? What if one could change a physical property that defined their usability? What innovation might that catalyze?

It’s a question that MIT Plasma Science and Fusion Center (PSFC) research scientists Hang Chi, Yunbo Ou, Jagadeesh Moodera, and their co-authors explore in a new open-access Nature Communications paper, “Strain-tunable Berry curvature in quasi-two-dimensional chromium telluride.”

Understanding the magnitude of the authors’ discovery requires a brief trip back in time: In 1879, a 23-year-old graduate student named Edwin Hall discovered that when he put a magnet at right angles to a strip of metal that had a current running through it, one side of the strip would have a greater charge than the other. The magnetic field was deflecting the current’s electrons toward the edge of the metal, a phenomenon that would be named the Hall effect in his honor.

In Hall’s time, the classical system of physics was the only kind, and forces like gravity and magnetism acted on matter in predictable and immutable ways: Just like dropping an apple would result in it falling, making a “T” with a strip of electrified metal and magnet resulted in the Hall effect, full stop. Except it wasn’t, really; now we know quantum mechanics plays a role, too.

Read More  From mRNA To Electrons: Here's Who Won Nobel Prizes In 2023

Think of classical physics as a map of Arizona, and quantum mechanics as a car trip through the desert. The map provides a macro view and generalized information about the area, but it can’t prepare the driver for all the random events one might encounter, like an armadillo running across the road. Quantum spaces, like the journey the driver is on, are governed by a different set of local traffic rules. So, while the Hall effect is induced by an applied magnetic field in a classical system, in a quantum case the Hall effect may occur even without the external field, at which point it becomes the anomalous Hall effect.

When cruising in the quantum realm, one is equipped with the knowledge of the so-called “Berry phase,” named after British physicist Michael Berry. It serves as a GPS logger for the car: It’s as if the driver has recorded their entire trip from start to finish, and by analyzing the GPS history, one can better plot the ups and downs, or “curvature” of the space. This “Berry curvature” of the quantum landscape can naturally shift electrons to one side, inducing the Hall effect without a magnetic field, just as the hills and valleys dictate the path of the car.

While many have observed the anomalous Hall effect in magnetic materials, none had been able to manipulate it by squeezing and/or stretching — until the paper’s authors developed a method to demonstrate the change in the anomalous Hall effect and Berry curvature in an unusual magnet.

First, they took half-millimeter-thick bases made of either aluminum oxide or strontium titanate, both of which are crystals, and grew an incredibly thin layer of chromium telluride, a magnetic compound, on top of the bases. On their own, these materials wouldn’t do much; however, when combined, film’s magnetism and the interface it created with the bases onto which it was grown caused the layers to stretch or squeeze.

Read More  TI Makes Wi-Fi® Technology More Robust And Affordable For Connected IoT Applications

To deepen their understanding of how these materials were working together, the researchers partnered with Oak Ridge National Laboratory (ORNL)’s Spallation Neutron Source to perform neutron scattering experiments — essentially blasting the material with shots of particles and studying what bounced back — to learn more about the film’s chemical and magnetic properties. Neutrons were an ideal tool for the study because they are magnetic but have no electrical charge. The neutron experiments allowed the researchers to build a profile that revealed how the chemical elements and magnetic behaviors changed at different levels as they probed deeper into the material.

The researchers witnessed the anomalous Hall effect and Berry curvature responding to the degree of squeezing or stretching occurring on the base after the film was applied, an observation later verified by modeling and data simulations.

Though this breakthrough occurred at the tiniest molecular level, the scientists’ discovery has significant, real-world ramifications. For example, hard drives store data in tiny magnetic regions, and if they were built using “strain-tunable” materials like the film, they could store additional data in regions that have been stretched different ways. In robotics, strain-tunable materials could be used as sensors able to provide precise feedback on robots’ movements and positioning. Such materials would be especially useful for “soft robots,” which use soft and flexible components that better imitate biological organisms. Or, a magnetic device that changed its behavior when flexed or bent could be used to detect minute changes in the environment, or to make incredibly sensitive health monitoring equipment.

Read More  IBM And Fundación Ikerbasque Partner To Launch Groundbreaking Quantum Computational Center

In addition to Chi, Ou, and Moodera, who is also an affiliate of the MIT Department of Physics, MIT contributors to the work include postdoc Alexandre C. Foucher and Professor Frances Ross of the Department of Materials Science and Engineering.

Additional co-authors include Tim B. Eldred and Wenpei Gao of North Carolina State University; Sohee Kwon, Yuhang Liu, and Roger K. Lake of the University of California at Riverside; Joseph Murray, Michael Dreyer, and Robert E. Butera of the Laboratory for Physical Sciences; Haile A. Ambaye, Valerie Lauter, and Jong K. Keum of ORNL; Alice T. Greenberg, Yuhang Liu, Mahesh R. Neupane, George J. de Coster, Owen A. Vail, Patrick J. Taylor, Patrick A. Folkes, and Charles Rong of the Army Research Lab; Gen Yin of Georgetown University; and Don Heiman of Northeastern University.

This study was supported, in part, by the U.S. Army Research Office, U.S. National Science Foundation (NSF), U.S. Office of Naval Research, U.S. Air Force Office of Scientific Research, and the MIT-IBM Watson AI Research Lab. Facilities access was provided by the MIT Materials Research Laboratory, MRSEC, MIT.nano, SNS and Center for Nanophase Materials Sciences, Department of Energy Office of Science User Facilities operated by ORNL, and Advanced Cyberinfrastructure Coordination Ecosystem: Services and Support supported by NSF.

Reprinted with permission of MIT News (http://news.mit.edu/)

Source: cyberpogo.com


For enquiries, product placements, sponsorships, and collaborations, connect with us at [email protected]. We'd love to hear from you!

Our humans need coffee too! Your support is highly appreciated, thank you!

aster.cloud

Related Topics
  • Electronics
  • Hall effect
  • Magnets
  • Physics
  • Quantum
  • Quantum Mechanics
  • Robotics
You May Also Like
View Post
  • Computing
  • Multi-Cloud
  • Technology

Reliance on US tech providers is making IT leaders skittish

  • May 28, 2025
View Post
  • Computing
  • Multi-Cloud
  • Technology

Examine the 4 types of edge computing, with examples

  • May 28, 2025
View Post
  • Computing
  • Multi-Cloud
  • Technology

AI and private cloud: 2 lessons from Dell Tech World 2025

  • May 28, 2025
View Post
  • Computing
  • Multi-Cloud
  • Technology

TD Synnex named as UK distributor for Cohesity

  • May 28, 2025
View Post
  • Computing
  • Multi-Cloud
  • Technology

Broadcom’s ‘harsh’ VMware contracts are costing customers up to 1,500% more

  • May 28, 2025
View Post
  • Computing
  • Multi-Cloud
  • Technology

Weigh these 6 enterprise advantages of storage as a service

  • May 28, 2025
View Post
  • Computing
  • Multi-Cloud
  • Technology

Pulsant targets partner diversity with new IaaS solution

  • May 23, 2025
View Post
  • Computing
  • Multi-Cloud
  • Technology

Growing AI workloads are causing hybrid cloud headaches

  • May 23, 2025

Stay Connected!
LATEST
  • 1
    Just make it scale: An Aurora DSQL story
    • May 29, 2025
  • 2
    Reliance on US tech providers is making IT leaders skittish
    • May 28, 2025
  • Examine the 4 types of edge computing, with examples
    • May 28, 2025
  • AI and private cloud: 2 lessons from Dell Tech World 2025
    • May 28, 2025
  • 5
    TD Synnex named as UK distributor for Cohesity
    • May 28, 2025
  • Weigh these 6 enterprise advantages of storage as a service
    • May 28, 2025
  • 7
    Broadcom’s ‘harsh’ VMware contracts are costing customers up to 1,500% more
    • May 28, 2025
  • 8
    Pulsant targets partner diversity with new IaaS solution
    • May 23, 2025
  • 9
    Growing AI workloads are causing hybrid cloud headaches
    • May 23, 2025
  • Gemma 3n 10
    Announcing Gemma 3n preview: powerful, efficient, mobile-first AI
    • May 22, 2025
about
Hello World!

We are aster.cloud. We’re created by programmers for programmers.

Our site aims to provide guides, programming tips, reviews, and interesting materials for tech people and those who want to learn in general.

We would like to hear from you.

If you have any feedback, enquiries, or sponsorship request, kindly reach out to us at:

[email protected]
Most Popular
  • 1
    Cloud adoption isn’t all it’s cut out to be as enterprises report growing dissatisfaction
    • May 15, 2025
  • 2
    Hybrid cloud is complicated – Red Hat’s new AI assistant wants to solve that
    • May 20, 2025
  • 3
    Google is getting serious on cloud sovereignty
    • May 22, 2025
  • oracle-ibm 4
    Google Cloud and Philips Collaborate to Drive Consumer Marketing Innovation and Transform Digital Asset Management with AI
    • May 20, 2025
  • notta-ai-header 5
    Notta vs Fireflies: Which AI Transcription Tool Deserves Your Attention in 2025?
    • May 16, 2025
  • /
  • Technology
  • Tools
  • About
  • Contact Us

Input your search keywords and press Enter.