2023
Analogies of phonon anomalies and electronic gap features in the infrared response of Sr (14-x) Ca x Cu24O41 and underdoped YBa2Cu3O 6+x
ADAMUS, Petr; Bing XU; Premysl MARSIK; Adam DUBROKA; Paulína BARABASOVÁ et al.Základní údaje
Originální název
Analogies of phonon anomalies and electronic gap features in the infrared response of Sr (14-x) Ca x Cu24O41 and underdoped YBa2Cu3O 6+x
Autoři
ADAMUS, Petr; Bing XU; Premysl MARSIK; Adam DUBROKA; Paulína BARABASOVÁ; Hana RŮŽIČKOVÁ; Pascal PUPHAL; Ekaterina POMJAKUSHINA; Jeffery L. TALLON; Yves-Laurent MATHIS; Dominik MUNZAR a Christian BERNHARD
Vydání
Reports on Progress in Physics, IOP Publishing Ltd, 2023, 0034-4885
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10302 Condensed matter physics
Stát vydavatele
Velká Británie a Severní Irsko
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 19.100
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:14310/23:00131688
Organizační jednotka
Přírodovědecká fakulta
UT WoS
EID Scopus
Klíčová slova anglicky
infrared spectroscopy; high-Tc cuprates; strongly correlated electron systems
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 13. 9. 2023 10:54, Mgr. Marie Novosadová Šípková, DiS.
Anotace
V originále
We present an experimental and theoretical study which compares the phonon anomalies and the electronic gap features in the infrared response of the weakly coupled two-leg-ladders in Sr 14-x CaxCu24O41 (SCCO) with those of the underdoped high-T ( c ) superconductor YBa2Cu3O 6+x 2 planes) of YBCO. We further confirm that an insulator-like pseudogap develops in the a-axis conductivity of SCCO which closely resembles that in the c-axis conductivity of YBCO. Most surprisingly, we find that the c-axis conductivity (field along the legs of the ladders) of SCCO is strikingly similar to the in-plane one (field parallel to the CuO2 planes) of YBCO. Notably, in both cases a dip feature develops in the normal state spectra that is connected with a spectral weight shift toward low frequencies and can thus be associated with precursor superconducting pairing correlations that are lacking macroscopic phase coherence. This SCCO-YBCO analogy indicates that collective degrees of freedom contribute to the low-energy response of underdoped high T ( c ) cuprates and it even suggests that the charges in the CuO2 planes tend to segregate forming quasi-one-dimensional structures similar to the two-leg ladders, as predicted for the stripe-scenario or certain intertwinned states.
Návaznosti
| EF19_073/0016943, projekt VaV |
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| MUNI/A/1550/2021, interní kód MU |
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