Physicists create magnetic state in atomic layers of transition metal oxide

January 22, 2016
Physicists create magnetic state in atomic layers of transition metal oxide
Crystal and band structures of 2LTO/2LNO. Credit: Nature Communications (2016). DOI: 10.1038/ncomms10418

Physicists at the University of Arkansas and their collaborators have created a magnetic state in a few atomic layers of artificially synthesized materials known as transition metal oxides.

The research team published its findings on Thursday, Jan. 21, in Nature Communications, an online journal published by the journal Nature.

"The key to the next generation of electronics is fabricating transistors that are multifunctional, meaning that a single electric pulse should be able to trigger multiple actions. For example, they can transition between electronic and magnetic states," said Jak Chakhalian, a professor of physics who directs the Artificial Quantum Materials Laboratory at the U of A.

"This work opens the door to devices based on junctions of correlated electronic beyond our current semiconductor devices," he said.

Yanwei Cao, a postdoctoral physics research associate in the Artificial Quantum Materials Lab, found a way to produce a novel in a few atomic sheets of a transition metal oxide comprised of lanthanum and titanium and nickel. He conducted the experiments at the University of Arkansas and Advanced Photon Source at Argonne National Laboratory near Chicago.

The research team included U of A postdoctoral research associates Michael Kareev and Srimanta Middey, doctoral student Xiaoran Liu and recent doctoral graduate Derek Meyers, now at Brookhaven National Laboratory. The team also included Debashish Chowdhury at the Indian Institute of Technology in Kanpur, India; and John W. Freeland, Phillip Ryan and Jong-Woo Kim of the Advanced Photon Source.

Explore further: Complex oxides become multifunctional at ultimate quantum limit

More information: Yanwei Cao et al. Engineered Mott ground state in a LaTiO3+δ/LaNiO3 heterostructure, Nature Communications (2016). DOI: 10.1038/ncomms10418

Related Stories

Discovery furthers understanding of superconductivity

May 28, 2013

(Phys.org) —Physicists at the University of Arkansas have collaborated with scientists in the United States and Asia to discover that a crucial ingredient of high-temperature superconductivity could be found in an entirely ...

Recommended for you

Understanding nature's patterns with plasmas

August 23, 2016

Patterns abound in nature, from zebra stripes and leopard spots to honeycombs and bands of clouds. Somehow, these patterns form and organize all by themselves. To better understand how, researchers have now created a new ...

Measuring tiny forces with light

August 25, 2016

Photons are bizarre: They have no mass, but they do have momentum. And that allows researchers to do counterintuitive things with photons, such as using light to push matter around.

Light and matter merge in quantum coupling

August 22, 2016

Where light and matter intersect, the world illuminates. Where light and matter interact so strongly that they become one, they illuminate a world of new physics, according to Rice University scientists.

Stretchy supercapacitors power wearable electronics

August 23, 2016

A future of soft robots that wash your dishes or smart T-shirts that power your cell phone may depend on the development of stretchy power sources. But traditional batteries are thick and rigid—not ideal properties for ...

Spherical tokamak as model for next steps in fusion energy

August 24, 2016

Among the top puzzles in the development of fusion energy is the best shape for the magnetic facility—or "bottle"—that will provide the next steps in the development of fusion reactors. Leading candidates include spherical ...

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.