Nanotechnology Now

Our NanoNews Digest Sponsors
Heifer International



Home > Press > A new strategy to create 2D magnetic order

(a) The transport measurements. (b) An atomically resolved electron microscopy image showing the anionic and cationic configuration of SrRuO3 grain boundary. The first principles calculations bridge the structure-property relation.

CREDIT
©Science China Press
(a) The transport measurements. (b) An atomically resolved electron microscopy image showing the anionic and cationic configuration of SrRuO3 grain boundary. The first principles calculations bridge the structure-property relation. CREDIT ©Science China Press

Abstract:
Grain boundaries, which are consist of periodic arrangement of structural units and generally recognized as a two-dimensional "phase", can exhibit novel properties that are not existed in the intrinsic bulk crystal. The altered continuity of atomic bonding at grain boundaries cause local chemical environment dramatically change at a few unit cells, subsequently alter local electrical activity, magnetic order or other physical properties. The effects of grain boundary on properties is even more significant in the complex oxides due to the substantial interactions between lattice and other order parameters. Therefore, such an inhomogeneity of materials with grain boundary may dominate the entire response in nanoscale devices and have garnered particular interest in designing novel functional devices.

A new strategy to create 2D magnetic order

Beijing, China | Posted on April 10th, 2020

The nature of structural defects is determined by the atomic arrangements. Correlating the properties of single defect-based device with its specific atomic structure is vital and prerequisite for the device application. However, experimentally revealing such a structure-property relation is very challenging due to the atomic-size and chemical and structural complexity of defects, especially for the perovskite oxides that contain multiple elements.

In a new research article published in the Beijing-based National Science Review, scientists at Peking university, Institute of Physics, Chinese Academy of Sciences, and Tianjin University present atomic mechanism of spin-valve magnetoresistance at the asymmetry SrRuO3 grain boundary. The asymmetry atomic structure is very different from the common assumption based on prototype perovskite SrTiO3. The transport measurements exhibit the spin-valve magnetoresistance for the as fabricated centimeter-size and sub-nm-width Σ5(310) SrRuO3 grain boundary. Advanced scanning transmission electron microscopy and spectroscopy reveal its atomic arrangements based on which the first principles calculations reveal its electronic properties. Scientists find that owing to the Ru-O octahedron distortion near the asymmetric grain boundary, Ru d orbital reconstructs and results in reduction of magnetic moments and change of spin polarization along the grain boundary, forming a magnetic/nonmagnetic/magnetic junction. The calculations bridge the atomic structure with transport properties.

"Our findings can help us to understand the past transport properties such as the negative magnetoresistance and absence of tunneling magnetoresistance at the SrRuO3 grain boundary, and also predict new effects of SrRuO3 grain boundary such as the interfacial magnetoelectric coupling when SrRuO3 is used as a bottom electrode for growth of ferroelectric thin films." Prof. Peng Gao said, "In a broader perspective, control of defect structure at atomic scale can realize peculiar physical properties, providing us a new strategy to design devices with new low-dimensional magnetic properties by using boundary engineering."

This work was supported by the National Key R&D Program of China (2016YFA0300804), National Equipment Program of China (ZDYZ2015-1), National Natural Science Foundation of China (51672007 and 11974023), the Key-Area Research and Development Program of GuangDong Province (No. 2018B030327001?2018B010109009) and "2011 Program" Peking-Tsinghua-IOP Collaborative Innovation Center of Quantum Matter. Project was also supported by State Key Laboratory of Powder Metallurgy, Central South University, Changsha, China

####

About Science China Press
The National Science Review is the first comprehensive scholarly journal released in English in China that is aimed at linking the country's rapidly advancing community of scientists with the global frontiers of science and technology. The journal also aims to shine a worldwide spotlight on scientific research advances across China.

For more information, please click here

Contacts:
Peng Gao

Copyright © Science China Press

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related Links

See the article:

Related News Press

2 Dimensional Materials

New 2D multifractal tools delve into Pollock's expressionism January 17th, 2025

FSU researchers develop new methods to generate and improve magnetism of 2D materials December 13th, 2024

UCF researcher discovers new technique for infrared “color” detection and imaging: The new specialized tunable detection and imaging technique for infrared photons surpasses present technology and may be a cost-effective method of capturing thermal imaging or night vision, medica December 13th, 2024

News and information

Flexible electronics integrated with paper-thin structure for use in space January 17th, 2025

‘Brand new physics’ for next generation spintronics: Physicists discover a unique quantum behavior that offers a new way to manipulate electron-spin and magnetization to push forward cutting-edge spintronic technologies, like computing that mimics the human brain January 17th, 2025

Quantum engineers ‘squeeze’ laser frequency combs to make more sensitive gas sensors January 17th, 2025

How a milk component could eliminate one of the biggest challenges in treating cancer and other disease, including rare diseases: Nebraska startup to use nanoparticles found in milk to target therapeutics to specific cells January 17th, 2025

Magnetism/Magnons

Enhancing transverse thermoelectric conversion performance in magnetic materials with tilted structural design: A new approach to developing practical thermoelectric technologies December 13th, 2024

FSU researchers develop new methods to generate and improve magnetism of 2D materials December 13th, 2024

Govt.-Legislation/Regulation/Funding/Policy

Department of Energy announces $71 million for research on quantum information science enabled discoveries in high energy physics: Projects combine theory and experiment to open new windows on the universe January 17th, 2025

Quantum engineers ‘squeeze’ laser frequency combs to make more sensitive gas sensors January 17th, 2025

Chainmail-like material could be the future of armor: First 2D mechanically interlocked polymer exhibits exceptional flexibility and strength January 17th, 2025

Researchers uncover strong light-matter interactions in quantum spin liquids: Groundbreaking experiment supported by Rice researcher reveals new insights into a mysterious phase of quantum matter December 13th, 2024

Possible Futures

Quantum engineers ‘squeeze’ laser frequency combs to make more sensitive gas sensors January 17th, 2025

How a milk component could eliminate one of the biggest challenges in treating cancer and other disease, including rare diseases: Nebraska startup to use nanoparticles found in milk to target therapeutics to specific cells January 17th, 2025

The National Space Society Congratulates SpaceX on Starship’s 7th Test Flight: Latest Test of the Megarocket Hoped to Demonstrate a Number of New Technologies and Systems January 17th, 2025

The National Space Society Congratulates Blue Origin on the Inaugural Flight of New Glenn: The Heavy Lift Reusable Rocket Will Open New Frontiers and Provide Healthy Competition January 17th, 2025

Spintronics

‘Brand new physics’ for next generation spintronics: Physicists discover a unique quantum behavior that offers a new way to manipulate electron-spin and magnetization to push forward cutting-edge spintronic technologies, like computing that mimics the human brain January 17th, 2025

Researchers discover a potential application of unwanted electronic noise in semiconductors: Random telegraph noises in vanadium-doped tungsten diselenide can be tuned with voltage polarity August 11th, 2023

Quantum materials: Electron spin measured for the first time June 9th, 2023

Rensselaer researcher uses artificial intelligence to discover new materials for advanced computing Trevor Rhone uses AI to identify two-dimensional van der Waals magnets May 12th, 2023

Chip Technology

Enhancing transverse thermoelectric conversion performance in magnetic materials with tilted structural design: A new approach to developing practical thermoelectric technologies December 13th, 2024

Bringing the power of tabletop precision lasers for quantum science to the chip scale December 13th, 2024

New material to make next generation of electronics faster and more efficient With the increase of new technology and artificial intelligence, the demand for efficient and powerful semiconductors continues to grow November 8th, 2024

Nanofibrous metal oxide semiconductor for sensory face November 8th, 2024

Nanoelectronics

Interdisciplinary: Rice team tackles the future of semiconductors Multiferroics could be the key to ultralow-energy computing October 6th, 2023

Key element for a scalable quantum computer: Physicists from Forschungszentrum Jülich and RWTH Aachen University demonstrate electron transport on a quantum chip September 23rd, 2022

Reduced power consumption in semiconductor devices September 23rd, 2022

Atomic level deposition to extend Moore’s law and beyond July 15th, 2022

Discoveries

Autonomous AI assistant to build nanostructures: An interdisciplinary research group at TU Graz is working on constructing logic circuits through the targeted arrangement of individual molecules: Artificial intelligence should speed up the process enormously January 17th, 2025

‘Brand new physics’ for next generation spintronics: Physicists discover a unique quantum behavior that offers a new way to manipulate electron-spin and magnetization to push forward cutting-edge spintronic technologies, like computing that mimics the human brain January 17th, 2025

Quantum engineers ‘squeeze’ laser frequency combs to make more sensitive gas sensors January 17th, 2025

How a milk component could eliminate one of the biggest challenges in treating cancer and other disease, including rare diseases: Nebraska startup to use nanoparticles found in milk to target therapeutics to specific cells January 17th, 2025

Announcements

Quantum engineers ‘squeeze’ laser frequency combs to make more sensitive gas sensors January 17th, 2025

How a milk component could eliminate one of the biggest challenges in treating cancer and other disease, including rare diseases: Nebraska startup to use nanoparticles found in milk to target therapeutics to specific cells January 17th, 2025

The National Space Society Congratulates SpaceX on Starship’s 7th Test Flight: Latest Test of the Megarocket Hoped to Demonstrate a Number of New Technologies and Systems January 17th, 2025

The National Space Society Congratulates Blue Origin on the Inaugural Flight of New Glenn: The Heavy Lift Reusable Rocket Will Open New Frontiers and Provide Healthy Competition January 17th, 2025

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers/Posters

Autonomous AI assistant to build nanostructures: An interdisciplinary research group at TU Graz is working on constructing logic circuits through the targeted arrangement of individual molecules: Artificial intelligence should speed up the process enormously January 17th, 2025

Flexible electronics integrated with paper-thin structure for use in space January 17th, 2025

‘Brand new physics’ for next generation spintronics: Physicists discover a unique quantum behavior that offers a new way to manipulate electron-spin and magnetization to push forward cutting-edge spintronic technologies, like computing that mimics the human brain January 17th, 2025

Quantum engineers ‘squeeze’ laser frequency combs to make more sensitive gas sensors January 17th, 2025

Research partnerships

Gene therapy relieves back pain, repairs damaged disc in mice: Study suggests nanocarriers loaded with DNA could replace opioids May 17th, 2024

Discovery points path to flash-like memory for storing qubits: Rice find could hasten development of nonvolatile quantum memory April 5th, 2024

Researchers’ approach may protect quantum computers from attacks March 8th, 2024

How surface roughness influences the adhesion of soft materials: Research team discovers universal mechanism that leads to adhesion hysteresis in soft materials March 8th, 2024

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project