Driving Spin Excitations by Hydrostatic Pressure in BiFeO_{3}

Physical Review Letters
J BuhotM-A Measson

Abstract

Optical spectroscopy has been combined with computational and theoretical techniques to show how the spin dynamics in the model multiferroic BiFeO_{3} responds to the application of hydrostatic pressure and its corresponding series of structural phase transitions from R3c to the Pnma phases. As pressure increases, multiple spin excitations associated with noncollinear cycloidal magnetism collapse into two excitations, which show jump discontinuities at some of the ensuing crystal phase transitions. The effective Hamiltonian approach provides information on the electrical polarization and structural changes of the oxygen octahedra through the successive structural phases. The extracted parameters are then used in a Ginzburg-Landau model to reproduce the evolution with pressure of the spin wave excitations observed at low energy, and we demonstrate that the structural phases and the magnetic anisotropy drive and control the spin excitations.

References

Sep 1, 1995·Physical Review. B, Condensed Matter·W ZhongK M Rabe
Sep 26, 1994·Physical Review Letters·W ZhongK M Rabe
Dec 31, 2005·Physical Review Letters·Igor A KornevJ Kreisel
Dec 13, 2006·Physical Review Letters·Igor A KornevE Suard
Sep 4, 2008·Physical Review Letters·M CazayousD Colson
Jan 12, 2010·Nature Nanotechnology·S Y YangR Ramesh
Nov 16, 2010·Nature Materials·P RovillainM Cazayous
Oct 27, 2011·Physical Review Letters·Jan SeidelJoel W Ager
Aug 7, 2012·Physical Review Letters·D RahmedovL Bellaiche
Sep 26, 2012·Physical Review Letters·Dawei WangL Bellaiche
Jul 16, 2013·Physical Review Letters·Rogério de SousaMaximilien Cazayous

❮ Previous
Next ❯

Citations

May 24, 2018·Journal of Physics. Condensed Matter : an Institute of Physics Journal·M E GrafA M Llois
Mar 29, 2019·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Zhiying GuoDongliang Chen
Sep 1, 2018·Physical Review Letters·Pierre MassatYann Gallais
Sep 19, 2019·Physical Chemistry Chemical Physics : PCCP·Yuan ZhangJianmin Yuan
Jul 2, 2016·Physical Review Letters·Charles PaillardL Bellaiche
Apr 13, 2019·Physical Review Letters·Romain GrassetMarie-Aude Méasson

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

© 2022 Meta ULC. All rights reserved