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Quantum Material

All articles tagged with #quantum material

physics1 year ago•4 min saved

"Experimental Evidence of Graviton-Like Particle Found in Quantum Material"

Researchers have presented the first experimental evidence of collective excitations with spin called chiral graviton modes (CGMs) in a semiconducting material, marking the first experimental substantiation of the concept of gravitons in a condensed matter system. The discovery was made in a type of condensed matter called a fractional quantum Hall effect (FQHE) liquid, and the ability to study graviton-like particles in the lab could help bridge the gap between quantum mechanics and Einstein's theories of relativity. The findings could potentially connect high energy physics and condensed matter physics, offering new understanding of quantum systems and materials.

via Phys.org|

#collective-excitations #experimental-evidence #graviton

science-and-technology1 year ago•3 min saved

"Breakthrough: Scientists Uncover 2D Quantum Material with 100x More Mass"

Scientists from Uppsala and Columbia University have discovered a new 2D quantum material, CeSiI, with heavy fermions, marking the first instance of heavy fermions in a 2D structure. This breakthrough paves the way for advanced studies on quantum phenomena and the development of materials with tailored quantum properties. The material's unique 2D-like crystal structure with clearly separated, atom-thin layers opens up new possibilities for investigating correlated electron structures and creating materials with customized quantum properties.

via SciTechDaily|

#2d-structure #columbia-university #heavy-fermions

science2 years ago•3 min saved

"Discovery of Exotic Charge Transport in Quantum Material Shocks Physicists"

Physicists at Rice University have conducted quantum noise experiments on a "strange metal" quantum material, providing evidence that electricity flows through these materials in an unusual liquid-like form that cannot be explained by quasiparticles. The experiments measured quantum charge fluctuations known as "shot noise" and found that the noise was greatly suppressed compared to ordinary wires. The researchers suggest that this may indicate that quasiparticles are not well-defined or that charge moves in more complex ways. The study's findings contribute to a better understanding of charge transport in quantum materials and raise questions about the nature of strange metals in various physical systems.

via Phys.org|

#charge-transport #quantum-material #quasiparticles

science-and-technology2 years ago•4 min saved

"Quantum Material Experiences Exotic Order through Laser Pulse"

Researchers have created a state in a crystalline material that exhibits characteristics of both liquid and crystalline states. By bombarding a layered crystal with ultrashort laser flashes, the crystal's distortion changes orientation, resulting in a highly disordered state similar to liquid crystals. This hexatic state is volatile and lasts only for fractions of a nanosecond. The study was made possible by the use of an ultrafast electron microscope, providing insights into the complex dynamics of these layered crystals and their potential applications in quantum materials.

via Phys.org|

#crystal-structure #electrical-conductivity #laser-pulse

science-and-technology2 years ago•3 min saved

Quantum Material Enables High-Power Coherent Microwave Source.

An international team of researchers, led by the University of Geneva, has developed a quantum material that allows the curvature of the space inhabited by electrons to be controlled. The material, which was created using an advanced system for fabricating materials on an atomic scale, holds promise for future electronic devices, particularly in the field of optoelectronics. The researchers believe that this new material opens up new avenues in the exploration of very high-speed electromagnetic signal manipulation and can also be used to develop new sensors.

via SciTechDaily|

#electron-dynamics #high-speed-communication #optoelectronics

science-and-technology2 years ago•5 min saved

Quantum Researchers Develop "Huge" Distortion Material

Scientists at the Department of Energy’s SLAC National Accelerator Laboratory and Stanford University have developed a novel quantum material, the atomic framework of which has been drastically distorted into a herringbone pattern by an electronic tug-of-war between its layers caused by the Jahn-Teller effect. The distortions resulting from this material are “huge” compared to those in other materials, and the resulting lattice distortions are equal to 25% of the distance between ions in the lattice. The researchers plan to investigate the material's intriguing magnetic, orbital, and charge order properties further, which could result in unique features.

via SciTechDaily|

#atomic-structure #distortion #electronic-configuration