Skip to main content

A Simple Way to Control Superconductivity




Scientists from the RIKEN Center for Emergent Matter Science (CEMS) and collaborators have discovered a groundbreaking way to control superconductivity an essential phenomenon for developing more energy-efficient technologies and quantum computing by simply twisting atomically thin layers within a layered device. By adjusting the twist angle, they were able to finely tune the “superconducting gap,” which plays a key role in the behavior of these materials. The research was published in Nature Physics.

The superconducting gap is the energy threshold required to break apart Cooper pairs bound electron pairs that enable superconductivity at low temperatures. Having a larger gap allows superconductivity to persist at higher, more accessible temperatures, and tuning the gap is also important for optimizing Cooper pair behavior at the nanoscale, contributing to the high functionality of quantum devices.

To date, efforts to control the superconducting gap have largely focused on “real space,” in the physical position of particles. However, achieving control in momentum space, a different mapping that shows the energy state of the system has remained elusive. Fine-tuning the gap in momentum space is crucial for the next generation of superconductors and quantum devices.

In an effort to achieve this, the group began working with ultrathin layers of niobium diselenide, a well-known superconductor, deposited on a graphene substrate. Using advanced imaging and fabrication techniques, such as spectroscopic-imaging scanning tunnelling microscopy and molecular beam epitaxy, they precisely adjusted the twist angle of the layers. This modification produced measurable changes in the superconducting gap within momentum space, unlocking a novel “knob” for precisely tuning superconducting properties.

According to Masahiro Naritsuka of CEMS, the first author of the paper, “Our findings demonstrate that twisting provides a precise control mechanism for superconductivity by selectively suppressing the superconducting gap in targeted momentum regions. One surprising discovery was the emergence of flower-like modulation patterns within the superconducting gap that do not align with the crystallographic axes of either material. This underscores the unique role of twisting in shaping superconducting properties.”

Tetsuo Hanaguri of CEMS, the last author, added, “In the short term, our research deepens the understanding of superconducting systems and inter-layer interactions, advancing the design of superconductors with tailored properties. In the long term, it lays the foundation for developing energy-efficient technologies, quantum computing, and beyond. Next steps involve investigating whether magnetic layers can be integrated into the structure to enable both spin and momentum selectivity. These advances could unlock new research opportunities and pave the way for developing innovative materials and devices.”

Website: International Research Awards on High Energy Physics and Computational Science.


#HighEnergyPhysics#ParticlePhysics#QuantumPhysics#AstroparticlePhysics#ColliderPhysics#HiggsBoson#LHC#QuantumFieldTheory#NeutrinoPhysics#PhysicsResearch#ComputationalScience#DataScience#ScientificComputing#NumericalMethods#HighPerformanceComputing#MachineLearningInScience#BigData#AlgorithmDevelopment#SimulationScience#ParallelComputing

Visit Our Website : hep-conferences.sciencefather.com
Nomination Link :hep-conferences.sciencefather.com/award-nomination/?ecategory=Awards&rcategory=Awardee
Registration Link : hep-conferences.sciencefather.com/award-registration/
Member Link : hep-conferences.sciencefather.com/conference-membership/?ecategory=Membership&rcategory=Member
Awards-Winners : hep-conferences.sciencefather.com/awards-winners/
For Enquiries: physicsqueries@sciencefather.com

Get Connected Here:
==================
Social Media Link
Twitter : x.com/Psciencefather
Pinterest : in.pinterest.com/physicsresearchorganisation
Blog : physicscience23.blogspot.com
Instagram : www.instagram.com/victoriaanisa1
YouTube :www.youtube.com/channel/UCzqmZ9z40uRjiPSr9XdEwMA
Tumblr : www.tumblr.com/blog/victoriaanisa

Comments

Post a Comment

Popular posts from this blog

Physicists observe a new form of magnetism for the first time

MIT physicists have demonstrated a new form of magnetism that could one day be harnessed to build faster, denser, and less power-hungry " spintronic " memory chips. The new magnetic state is a mash-up of two main forms of magnetism: the ferromagnetism of everyday fridge magnets and compass needles, and antiferromagnetism, in which materials have magnetic properties at the microscale yet are not macroscopically magnetized. Now, the MIT team has demonstrated a new form of magnetism , termed "p-wave magnetism." Physicists have long observed that electrons of atoms in regular ferromagnets share the same orientation of "spin," like so many tiny compasses pointing in the same direction. This spin alignment generates a magnetic field, which gives a ferromagnet its inherent magnetism. Electrons belonging to magnetic atoms in an antiferromagnet also have spin, although these spins alternate, with electrons orbiting neighboring atoms aligning their spins antiparalle...
Post a Comment
Read more

Physicists Catch Light in 'Imaginary Time' in Scientific First

For the first time, researchers have seen how light behaves during a mysterious phenomenon called 'imaginary time '. When you shine light through almost any transparent material, the gridlock of electromagnetic fields that make up the atomic alleys and side streets will add a significant amount of time to each photon's commute. This delay can tell physicists a lot about how light scatters, revealing details about the matrix of material the photons must navigate. Yet until now, one trick up the theorist's sleeve for measuring light's journey invoking imaginary time has not been fully understood in practical terms. An experiment conducted by University of Maryland physicists Isabella Giovannelli and Steven Anlage has now revealed precisely what pulses of microwave radiation (a type of light that exists outside the visible spectrum) do while experiencing imaginary time inside a roundabout of cables. Their work also demonstrates how imaginary numbers can describe a ver...
Post a Comment
Read more

new research in qauntum physics

         VISIT:https: //hep-conferences.sciencefather.com/          N ew research in  qauntum physics.                                                    Alphabet Has a Second, Secretive Quantum Computing Team Recent research in quantum physics includes the development of quantum computers, which are expected to be much more powerful than conventional computers and could revolutionize many aspects of technology, such as artificial intelligence and cryptography. Other research includes the development of quantum sensors for a variety of applications, including medical diagnostics, and the study of quantum entanglement and its potential to enable quantum computing and secure communication. Additionally, research is being conducted into the applications of quantum mechanics in materials science, such as unde...
Post a Comment
Read more