Research Team Led by Jung Myung-wha of Sogang University
Discovers a New Chiral Exchange Interaction
Hidden between Magnetic Layers
- Expected to Contribute to Developing New Magnetic Memory Devices, a Newly Emerging Future Industry
The research team led by Jung Myung-wha, a professor of physics at Sogang University, has discovered a new chiral exchange interaction existing between magnetic thin film layers and identified its mechanism for the first time in the world. The findings were published on June 3 in the online edition of Nature Materials, a world-renowned academic magazine in the nature and science fields.
At present, videos are being streamed ubiquitously and vast numbers of multimedia files are being downloaded and stored in various types of devices. With this remarkable advancement of the information industry, the demand for new storage devices to process and store data with large capacity has been steadily increasing.
The research team of Sogang University has discovered possibilities for developing a new memory storage device that can overcome the limits of present non-volatile memory devices. The new device is able to store data within a 3D spin structure and provide faster speeds and lager capacity than existing devices.
Professor Jung said, “The findings are significant in that we found a new chiral exchange interaction hidden in between magnetic multiple film layers. With this technology, I expect that we will be able to address the structural problems of magnetic materials to design a new type of magnetic-based non-volatile memory device.”
The research has opened new possibilities of designing a 3D singular spin structure by using the newly found interaction. Furthermore, it is expected that magnetic memory devices can be built by employing the new spin structure.
Meanwhile, the research was conducted in collaboration with Professor Mathias Klaui of German Johannes Gutenberg University Mainz and Doctor Kyu Joon Lee, and sponsored by the senior researcher supporting project initiated by the Ministry of Science and ICT and the National Research Foundation.