High-pressure evolution of the magnetic order in LaMnO3

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F23%3A00572066" target="_blank" >RIV/68378271:_____/23:00572066 - isvavai.cz</a>

Výsledek na webu

<a href="http://doi.org/10.1103/PhysRevB.107.144426" target="_blank" >http://doi.org/10.1103/PhysRevB.107.144426</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevB.107.144426" target="_blank" >10.1103/PhysRevB.107.144426</a>

Jazyk výsledku

angličtina

Název v původním jazyce

High-pressure evolution of the magnetic order in LaMnO3

Popis výsledku v původním jazyce

A relationship between evolution of the long-range magnetic order, crystal structure, and lattice distortions in LaMnO3 was studied by a combination of neutron diffraction and Raman spectroscopy at high pressures up to 39 and 50 GPa, respectively, covering the temperature range 5 to 290 K. The Raman spectra reveal a gradual structural phase transformation evolving in the pressure range of 4 to 17 GPa, caused by a modification of the Jahn-Teller (JT) lattice distortions from the static cooperative character to the local one. A presence of residual JT-distorted regions associated with the initial phase is detected up to 32 GPa, where the insulator-metal transition occurs. At higher pressure, the local JT distortions also vanish completely at further compression up to 50 GPa. In the neutron diffraction data, a strong suppression of the A-type antiferromagnetic (AFM) phase is observed over the pressure region of the phase transformation.

Název v anglickém jazyce

High-pressure evolution of the magnetic order in LaMnO3

Popis výsledku anglicky

A relationship between evolution of the long-range magnetic order, crystal structure, and lattice distortions in LaMnO3 was studied by a combination of neutron diffraction and Raman spectroscopy at high pressures up to 39 and 50 GPa, respectively, covering the temperature range 5 to 290 K. The Raman spectra reveal a gradual structural phase transformation evolving in the pressure range of 4 to 17 GPa, caused by a modification of the Jahn-Teller (JT) lattice distortions from the static cooperative character to the local one. A presence of residual JT-distorted regions associated with the initial phase is detected up to 32 GPa, where the insulator-metal transition occurs. At higher pressure, the local JT distortions also vanish completely at further compression up to 50 GPa. In the neutron diffraction data, a strong suppression of the A-type antiferromagnetic (AFM) phase is observed over the pressure region of the phase transformation.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physical Review B

ISSN

2469-9950

e-ISSN

2469-9969

Svazek periodika

107

Číslo periodika v rámci svazku

14

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

144426

Kód UT WoS článku

000978680800004

EID výsledku v databázi Scopus

2-s2.0-85158869966