Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Future information technologies: 3D Quantum Spin Liquid revealed

11.05.2020

Quantum Spin Liquids are candidates for potential use in future information technologies. So far, Quantum Spin Liquids have usually only been found in one or two dimensional magnetic systems only. Now an international team led by HZB scientists has investigated crystals of PbCuTe2O6 with neutron experiments at ISIS, NIST and ILL. They found spin liquid behaviour in 3D, due to a so called hyper hyperkagome lattice. The experimental data fit extremely well to theoretical simulations also done at HZB.

IT devices today are based on electronic processes in semiconductors. The next real breakthrough could be to exploit other quantum phenomena, for example interactions between tiny magnetic moments in the material, the so-called spins.


Two of the four magnetic interactions form a new three-dimensional network of corner-sharing triangles, known as the hyper-hyperkagome lattice, leading to the quantum spin liquid behavior in PbCuTe2O6. © HZB

So-called quantum-spin liquid materials could be candidates for such new technologies. They differ significantly from conventional magnetic materials because quantum fluctuations dominate the magnetic interactions:

Due to geometric constraints in the crystal lattice, spins cannot all "freeze" together in a ground state - they are forced to fluctuate, even at temperatures close to absolute zero.

Quantum spin liquids: a rare phenomenon

Quantum spin liquids are rare and have so far been found mainly in two-dimensional magnetic systems. Three-dimensional isotropic spin liquids are mostly sought in materials where the magnetic ions form pyrochlore or hyperkagome lattices.

An international team led by HZB physicist Prof. Bella Lake has now investigated samples of PbCuTe2O6, which has a three-dimensional lattice called hyper-hyperkagome lattice.

Magnetic interactions simulated

HZB physicist Prof. Johannes Reuther calculated the behaviour of such a three-dimensional hyper-hyperkagome lattice with four magnetic interactions and showed that the system exhibits quantum-spin liquid behaviour with a specific magnetic energy spectrum.

Experiments at neutron sources find 3D quantum spin liquid

With neutron experiments at ISIS, UK, ILL, France and NIST, USA the team was able to prove the very subtle signals of this predicted behaviour. "We were surprised how well our data fit into the calculations. This gives us hope that we can really understand what happens in these systems," explains first author Dr. Shravani Chillal, HZB.

Picture: One of the four magnetic interactions leads to a three-dimensional network of corner-sharing triangles also known as the hyperkagome lattice. Combined the magnetic interactions form a hyper-hyper-Kagome lattice which allows the 3D quantum spin liquid behavior.

Wissenschaftliche Ansprechpartner:

Dr. Shravani Chillal
E-Mail: shravani.chillal@helmholtz-berlin.de

Prof. Dr. Bella Lake
E-Mail: bella.lake@helmholtz-berlin.de

Originalpublikation:

DOI: 10.1038/s41467-020-15594-1
http://dx.doi.org/10.1038/s41467-020-15594-1

Weitere Informationen:

https://www.helmholtz-berlin.de/pubbin/news_seite?nid=21301;sprache=en;seitenid=...

Dr. Ina Helms | Helmholtz-Zentrum Berlin für Materialien und Energie GmbH

More articles from Information Technology:

nachricht Artificial intelligence is energy-hungry -- new hardware could curb its appetite
07.05.2020 | Purdue University

nachricht Safe2Land - helps with engine-out and pilot incapacitation
07.05.2020 | FernUniversität in Hagen

All articles from Information Technology >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Future information technologies: 3D Quantum Spin Liquid revealed

Quantum Spin Liquids are candidates for potential use in future information technologies. So far, Quantum Spin Liquids have usually only been found in one or two dimensional magnetic systems only. Now an international team led by HZB scientists has investigated crystals of PbCuTe2O6 with neutron experiments at ISIS, NIST and ILL. They found spin liquid behaviour in 3D, due to a so called hyper hyperkagome lattice. The experimental data fit extremely well to theoretical simulations also done at HZB.

IT devices today are based on electronic processes in semiconductors. The next real breakthrough could be to exploit other quantum phenomena, for example...

Im Focus: IST Austria scientists demonstrate quantum radar prototype

Physicists at the Institute of Science and Technology Austria (IST Austria) have invented a new radar prototype that utilizes quantum entanglement as a method of object detection. This successful integration of quantum mechanics into our everyday devices could significantly impact the biomedical and security industries. The research is published in the journal Science Advances.

Quantum entanglement is a physical phenomenon where two particles remain inter-connected, sharing physical traits regardless of how far apart they are from one...

Im Focus: First simulation of a full-sized mitochondrial membrane

New algorithm links different scales, bringing simulated cell a step closer

Scientists from the University of Groningen have developed a method that combines different resolution levels in a computer simulation of biological membranes.

Im Focus: How Nano-Sensors Help with Treatment

ESF-funded project "SenseCare” at Chemnitz University of Technology successfully completed - Therapeutic support, especially for diabetes mellitus

In the medical field, flexible and highly sensitive sensors can combine diagnostics and treatment with high comfort for patients.

Im Focus: Quantum jump tipping the balance

A new door to the quantum world: when an atom absorbs or releases energy via the quantum jump of an electron, it becomes heavier or lighter, according to Einstein’s theory of relativity (E = mc²). However, the effect is minuscule for a single atom. Nevertheless, the team of Klaus Blaum and Sergey Eliseev at the Max Planck Institute for Nuclear Physics has successfully measured this tiny change in the mass of individual atoms for the first time. In order to achieve this, they used the ultra-precise Pentatrap atomic balance at the institute in Heidelberg. The team discovered a previously unobserved quantum state in rhenium, which could be interesting for future atomic clocks.

Astonishing, but true: if you wind a mechanical watch, it becomes heavier. The same thing happens when you charge your smartphone. This can be explained by the...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Aachen Machine Tool Colloquium AWK'21 will take place on June 10 and 11, 2021

07.04.2020 | Event News

International Coral Reef Symposium in Bremen Postponed by a Year

06.04.2020 | Event News

13th AKL – International Laser Technology Congress: May 4–6, 2022 in Aachen – Laser Technology Live already this year!

02.04.2020 | Event News

 
Latest News

To climb like a gecko, robots need toes

11.05.2020 | Life Sciences

Defective graphene has high electrocatalytic activity

11.05.2020 | Physics and Astronomy

Future information technologies: 3D Quantum Spin Liquid revealed

11.05.2020 | Information Technology

VideoLinks
Science & Research
Overview of more VideoLinks >>>