Resilience and Adaptability: New pathways with Skyrmion bubbles
Researchers from the University of Groningen and TU Wien have detected signatures of the skew scattering in the ferromagnetic conductor, SrRuO3, associated with topological magnetic bubbles. This effect showed a surprising adaptability to different substrate surfaces and unique resilience to variations of temperature, strength and direction of the applied magnetic field. This research was published on July 27, 2020, as a Rapid Communication in Physical Review Research.
Magnetic bubbles are cylindrically shaped islands with reversed magnetization that can be set into motion by electric current pulses. They have been discovered about fifty years ago and were immediately employed to store digital information in non-volatile memory that can withstand harsh environments.
The recent discovery that in chiral magnets the size of magnetic bubbles can be reduced to a few nanometers, spurred the interest in them. This extremely small dimension makes the bubbles highly suitable for novel high-density magnetic memory devices. The magnetic dipoles in the nanosized bubbles, also known as skyrmions, form a knot that cannot be easily unwound. This non-trivial topology gives rise to a skew scattering of electrons off skyrmions – the so-called Topological Hall Effect.
The detection of signatures of the skew scattering in the ferromagnetic conductor, SrRuO3, advances the field of skyrmionics. It provides significant opportunities to tailor device interfaces for new magnetic memory technologies and novel hardware components for alternative computing strategies.
This research is conducted by two research groups of the UG’s Zernike Institute of Advanced Materials (ZIAM), led by Prof. Tamalika Banerjee (PhD students Ping Zhang and Arijit Das), Prof. Maxim Mostovoy (PhD students Evgenii Barts and Maria Azhar), and by researchers of the TU Wien, Austria.
Links:
| Last modified: | 30 July 2020 10.23 a.m. |
More news
-
03 April 2025
IMChip and MimeCure in top 10 of the national Academic Startup Competition
Prof. Tamalika Banerjee’s startup IMChip and Prof. Erik Frijlink and Dr. Luke van der Koog’s startup MimeCure have made it into the top 10 of the national Academic Startup Competition.
-
01 April 2025
NSC’s electoral reform plan may have unwanted consequences
The new voting system, proposed by minister Uitermark, could jeopardize the fundamental principle of proportional representation, says Davide Grossi, Professor of Collective Decision Making and Computation at the University of Groningen
-
01 April 2025
'Diversity leads to better science'
In addition to her biological research on ageing, Hannah Dugdale also studies disparities relating to diversity in science. Thanks to the latter, she is one of the two 2024 laureates of the Athena Award, an NWO prize for successful and inspiring...