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Atomic Steps Guide Superconducting Vortices in Ultrathin Materials
Confirmed
In Short: Researchers at the Research Center for Materials Nanoarchitectonics (MANA), part of the National Institute for Materials Science (NIMS) in Japan, have discovered that atomic-scale steps can guide superconducting vortices in ultrathin superconductors.
Researchers at the Research Center for Materials Nanoarchitectonics (MANA), part of the National Institute for Materials Science (NIMS) in Japan, have discovered that atomic-scale steps can guide superconducting vortices in ultrathin superconductors.
Their findings, published in Physical Review B, reveal that vortices move more than 1,000 times more easily along atomic steps than across them at intermediate magnetic fields.
According to Uchihashi, the study's lead author, 'Our study shows that atomic-scale steps can act as effective rails that guide superconducting vortices, and that this guiding effect can be tuned simply by changing the temperature or magnetic field.
The research team used four-terminal resistance measurements to confirm the guiding effect of atomic steps on vortices.
Scanning tunneling microscopy further confirmed the parallel steps and directly visualized vortices located along them.
Superconducting vortices are tiny quantum objects whose movement can strongly influence how superconductors behave.
Controlling their direction of motion could be crucial for developing ultralow-power superconducting technologies.
However, directional control of vortices in two-dimensional superconductors has remained challenging.
Achieving such control could help develop future superconducting devices that consume less power while improving processing efficiency.
This discovery could lead to significant advancements in the field of superconductivity, enabling more efficient and powerful electronic devices.
The research highlights the importance of understanding and manipulating the behavior of superconducting vortices at the atomic level.
Further studies are needed to fully understand the mechanisms behind this phenomenon and to explore potential applications in superconducting technologies.
What this adds
The research adds to the understanding of how superconducting vortices can be controlled at the atomic level, potentially leading to more efficient superconducting devices.
The findings could have implications for the development of new technologies that require precise control over superconducting properties.
What's confirmed
- Researchers at the Research Center for Materials Nanoarchitectonics (MANA), part of the National Institute for Materials Science (NIMS) in Japan, have discovered that atomic-scale steps can guide superconducting vortices in ultrathin superconductors.
- Their findings, published in Physical Review B, reveal that vortices move more than 1,000 times more easily along atomic steps than across them at intermediate magnetic fields.
- According to Uchihashi, the study's lead author, 'Our study shows that atomic-scale steps can act as effective rails that guide superconducting vortices, and that this guiding effect can be tuned simply by changing the temperature or magnetic field.
- The research team used four-terminal resistance measurements to confirm the guiding effect of atomic steps on vortices.
- Scanning tunneling microscopy further confirmed the parallel steps and directly visualized vortices located along them.
- Superconducting vortices are tiny quantum objects whose movement can strongly influence how superconductors behave.
- Controlling their direction of motion could be crucial for developing ultralow-power superconducting technologies.
- However, directional control of vortices in two-dimensional superconductors has remained challenging.
- Achieving such control could help develop future superconducting devices that consume less power while improving processing efficiency.
- This discovery could lead to significant advancements in the field of superconductivity, enabling more efficient and powerful electronic devices.
- The research highlights the importance of understanding and manipulating the behavior of superconducting vortices at the atomic level.
- Further studies are needed to fully understand the mechanisms behind this phenomenon and to explore potential applications in superconducting technologies.
What's still developing
- During the mission's fourth flyby in September 2024, this instrument detected how particles from a solar eruption penetrated Mercury's magnetic field and impacted the surface.
- Said co-author Rami Vainio, the co-Principal Investigator of SIXS and a professor of space physics at the University of Turku: Mercury's magnetic field is weaker than Earth's, and its magnetosphere is much smaller than Earth's.
- Emergency services rushed to the scene, where scores of professionals worked quickly amid high temperatures to retrieve those needing medical attention.
- According to research presented in 2024, as the reversal took hold, the field weakened to just 5 percent of its usual strength, and stayed like that for centuries.
- Over the South Atlantic, ESA's Swarm satellites (the ones responsible for this creepy audio) have been mapping a 'giant dent' in the field – a region called the South Atlantic Anomaly that grew by an area nearly half the size of continental Europe between 2014 and 2025.
- Related: Sound of Earth's Flipping Magnetic Field Haunts Again From 780,000 Years Ago "Understanding these extreme events is important for their occurrence in the future, space climate predictions, and assessing the effects on the environment and on the Earth system," said Sanja Panovska of GFZ Potsdam, Germany, who reconstructed the magnetic field data behind the sonification back in 2024.
- You can now listen to the exact sound of Earth's magnetic field falling apart.
- Around 41,000 years ago, our planet's magnetic field did dramatic: it flipped.
- Using data from the European Space Agency's Swarm satellite mission, combined with evidence of magnetic field movements preserved in ancient rock and sediment, geoscientists reconstructed the entire event and turned it into sound – layering in recordings of creaking wood and colliding rocks to represent the field's convulsions.
- Listen to the sound in the video below: To understand why it sounds so wrong, it helps to know what the field is actually doing up there.
- Our planet's magnetic field is generated by swirling liquid metal deep in Earth's core, and it extends tens to hundreds of thousands of kilometers into space, deflecting the solar particles that would otherwise strip away our atmosphere.
- Normally, its field lines form neat, closed loops – south to north above the surface, north to south below it.