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Result of the Month (ROM) March 2024

Non-Fermi Liquid Behaviour in a Correlated Flat-band Pyrochlore Lattice


Materials Innovation Platform (MIP)

Accelerating the Pace of Discovery


Newsflyer Winter 2023

Welcome to the Scienta Omicron Newsflyer for Winter 2023


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SXM Trade In for SCALA SPM Controllers

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Accelerating Materials Innovation 

Electron Spectroscopy

Photoelectron Spectroscopy | © Scienta Omicron

Scanning Probe Microscopy

LT STM Lab | © Scienta Omicron

Thin Film Deposition

Lab10 MBE System | © Scienta Omicron

Result of the Month (ROM), March 2024

"Non-Fermi Liquid Behaviour in a Correlated Flat-band Pyrochlore Lattice"

TElectronic correlation effects are manifested in quantum materials when either the on-site Coulomb repulsion is large or the electron kinetic energy is small. The former is the dominant effect in cuprate superconductors and heavy-fermion systems whereas it is the latter in twisted bilayer graphene and geometrically frustrated metals. However, the simultaneous cooperation of both effects in the same quantum material remains rare. The design aim is to produce correlated topological flat bands pinned at the Fermi level. Here, theyobserve a flat band at the Fermi level in a 3d pyrochlore metal CuV2S4. Our angle-resolved photoemission spectroscopy data reveal that destructive quantum interference associated with the V pyrochlore sublattice and further renormalization to the Fermi level by electron interactions induce this flat band. Consequently, we discover transport signatures that evidence a deviation from Fermi liquid behaviour as well as an enhanced Sommerfeld coefficient. Our work illustrates the combined cooperation of local Coulomb interactions and geometric frustration in a pyrochlore lattice system to induce correlated topology by constructing and pinning correlated flat bands near the Fermi level.

Scienta Omicron Newsflyer Winter 2023

Welcome to the Scienta Omicron Winter Newsflyer!

We are thrilled to bring you the latest highlights and breakthroughs in the realm of scientific innovation. In this edition of the Scienta Omicron Winter Newsflyer, join us on a journey through the fascinating discoveries, cutting-edge technologies, and collaborative efforts that define the spirit of exploration in the scientific community.

From groundbreaking research to advancements in our instrumentation, this newsletter encapsulates the essence of our commitment to pushing the boundaries of what is possible. As we delve into the cold season, we invite you to warm your curiosity with the exciting stories and developments that unfold within these pages.

Latest News

News PEAK-1.5 Now Available for Download!

We're thrilled to announce that PEAK-1.5 is now ready for download at the Scienta Omicron Customer Portal. Here's a quick overview of the new features you can expect with this release:

  • New Sequence Control for easier setup of measurements
  • A fresh Sequence View with Spectrum Region Summaries for better control during measurement
  • Introduction of Continuous Pass Energies for optimisation of instrument resolution and data recording efficiency (requires a new software license)
  • Introduction of a Detector Overexposure Monitor to protect the MCP/CMOS detector from intensity overload

Sample Manipulators

Open and Closed Cycle Sample Manipulators

When aiming at high experimental energy resolution for ARPES measurement, it is crucial to achieve ultra-low sample temperatures to quench thermal broadening. This is possible with state-of-the-art cryo manipulators reaching sample temperatures from < 3.5 K and featuring up to 6 fully motorized axes for a large range of movements. The manipulators are available as open and closed cycle. Open cycle manipulators reach lower temperature specifications and are rapidly cooled down from room temperature to 10 K in 15 min. The low He consumption below 1 l/h at ultimate temperature and the possibility to operate with liquid nitrogen at higher temperatures ensure a low operating cost. Closed cycle manipulators have no He consumption providing unlimited holding time.

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PEAK Slit Control

Optimal analyser settings with remote control

In photoelectron spectroscopy measurements, there is always a trade-off between signal intensity and resolution. Optimising this balance is the key to obtaining smooth and sharp spectra within the shortest time possible. For hemispherical analysers, this trade-off is controlled by the selected entrance slit and pass energy.
PEAK Slit Control replaces manual slit changes at the analyser with a motorised and software-controlled slit. With the control of all analyser settings, easy and quick optimisation of signal intensity versus resolution is possible.

About Us 

Scienta Omicron is a leading innovator in Surface Science and Nanotechnology. At our technology centres in Uppsala, Sweden and Taunusstein, Germany we develop and produce high-tech instruments. Our instruments support top researchers globally and are serviced by our four regional hubs in USA, China, Japan and Germany.

We provide state of the art instruments in Electron Spectroscopy, Scanning Probe Microscopy and Thin Film Deposition. Focusing on the race for new unique materials and solutions, in areas like – smarter batteries, next generation electronics, quantum technologies, solar energy, intelligent sensors and advanced materials, Scienta Omicron enables development of tomorrow´s materials.

THE SCIENTA GROUP: One Group, Two Leading Brands

Since 1983 the combined companies, including Scienta Omicron and Scienta Envinet (former Scienta Sensor Systems and Envinet GmbH respectively) that make up the Scienta Scientific Group have been leading the development of ultra high vacuum research and analysis equipment in the fields of Surface Science, Material Physics, UHV technology and Radiation Detection, resulting in scientific breakthroughs, Nobel Prizes and outstanding industrial equipment.