Sentences with phrase «phonon coupling»
We find that the divergence of the thermal expansion coefficients near the phase transition in GeTe is induced by acoustic phonon coupling to soft TO modes.
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Spin - phonon coupling directly represents the strength of interaction between magnetism (spin) and the crystal lattice system (phonon).
The vibrations are called phonons, and the electron - phonon coupling the researchers measured was 10 times stronger than theory had predicted — making it strong enough to potentially play a role in unconventional superconductivity, which allows materials to conduct electricity with no loss at unexpectedly high temperatures.
A research team led by Kazunari Yamaura, chief researcher, Superconducting Properties Unit, National Institute for Materials Science (NIMS), Japan, and Dr. Stuart Calder and others at the Oak Ridge National Laboratory in the United States, jointly demonstrated that the strongest ever spin - phonon coupling was observed in osmium oxide synthesized for the first time in the world by NIMS in 2009.
The fact that this structural characteristic is common to all platinum group elements suggests that compounds based on these elements other than osmium are also likely to be associated with strong spin - phonon coupling.
The strong spin - phonon coupling may be caused by the outermost orbitals of osmium atoms as they are greatly extended outward in space, in the solid oxide.
«The idea of a magnon - phonon coupling has already been around as a possible explanation for the uniquely low coefficient of thermal expansion of the invar materials.
«Our results shed light on some of the long - standing puzzles surrounding this material, reveling unusual spin - phonon coupling.»
«Borophene is metallic in its typical state, with strong electron - phonon coupling to support possible superconductivity, and a rich band structure that contains Dirac cones, as in graphene,» Yakobson said.
Not exact matches
Theoretical analysis indicates that KxC60 is a strong coupling superconductor, and we suggest that the enhanced electron - phonon interaction is related to the unique hybridization of the C sp - derived states.
In the future, the team would like to study this coupling in other materials and ideally demonstrate that one can artificially convert phonons into magnons and vice versa.
Professor Park Je - Geun, Associate Director of the Center for Correlated Electron Systems (CCES), within the Institute for Basic Science (IBS), and colleagues have observed, quantified and created a new theoretical model of the coupling of two forms of collective atomic excitation, known as magnons and phonons in crystals of the antiferromagnet manganite (Y, Lu) MnO3, a mineral made of manganese oxide and rare - earth elements called yttrium (Y) and lutetium (Lu).
«It's official: Phonon and magnon are a couple.»
Recent studies indicate that the stronger the spin - phonon interaction is, the more favorable it is in the development of new materials — such as a multiferroic material, for example — in which the coupling of magnetism and the lattice system has great importance.
Spin waves and phonons are strongly coupled in ferromagnetic and antiferromagnetic structures.
Ab Initio Calculations of Nonequilibrium Coupled Carrier and Phonon Dynamics.