Interaction of phonons with intraband electronic excitations and crystal field transitions in Raman spectra of (Nd,Eu,Gd)Ba2Cu3Oy crystals

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F15%3A00448241" target="_blank" >RIV/68378271:_____/15:00448241 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.mseb.2015.03.004" target="_blank" >http://dx.doi.org/10.1016/j.mseb.2015.03.004</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.mseb.2015.03.004" target="_blank" >10.1016/j.mseb.2015.03.004</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Interaction of phonons with intraband electronic excitations and crystal field transitions in Raman spectra of (Nd,Eu,Gd)Ba2Cu3Oy crystals

Popis výsledku v původním jazyce

Intraband electronic excitations, phonons, and crystal field transitions of two unique (Nd,Eu,Gd)Ba2Cu3Oy single crystals with different Eu/Gd ratio were studied by Raman spectroscopy. The spectra were measured above and below critical temperature. The phonon symmetries were determined from the angular dependence of the spectra. The line shapes of barium, planar oxygen, and apical oxygen ions? vibrations were affected by interaction of the phonons with intraband electronic excitations. We fitted the spectra at all measured temperatures and disentangled the phonon contributions from those of the intraband electronic excitations and identified corresponding interference terms. Below Tc, a broad, superconductivity-induced high-frequency peak appeared in the spectra of both crystals. Damping of the Raman active phonons in our crystals correlated well with varying pinning disorder in the crystals.

Název v anglickém jazyce

Interaction of phonons with intraband electronic excitations and crystal field transitions in Raman spectra of (Nd,Eu,Gd)Ba2Cu3Oy crystals

Popis výsledku anglicky

Intraband electronic excitations, phonons, and crystal field transitions of two unique (Nd,Eu,Gd)Ba2Cu3Oy single crystals with different Eu/Gd ratio were studied by Raman spectroscopy. The spectra were measured above and below critical temperature. The phonon symmetries were determined from the angular dependence of the spectra. The line shapes of barium, planar oxygen, and apical oxygen ions? vibrations were affected by interaction of the phonons with intraband electronic excitations. We fitted the spectra at all measured temperatures and disentangled the phonon contributions from those of the intraband electronic excitations and identified corresponding interference terms. Below Tc, a broad, superconductivity-induced high-frequency peak appeared in the spectra of both crystals. Damping of the Raman active phonons in our crystals correlated well with varying pinning disorder in the crystals.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

<a href="/cs/project/ME10069" target="_blank" >ME10069: Materiálové inženýrství supravodičů</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Materials Science and Engineering B-Advanced Functional Solid-State Materials

ISSN

0921-5107

e-ISSN

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Svazek periodika

197

Číslo periodika v rámci svazku

Jul

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

8

Strana od-do

10-17

Kód UT WoS článku

000355353000003

EID výsledku v databázi Scopus

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