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 (203 Česká republika, domácí), Bing XU, Premysl MARSIK, Adam DUBROKA (203 Česká republika, domácí), Paulína BARABASOVÁ (703 Slovensko, domácí), Hana RŮŽIČKOVÁ (203 Česká republika, domácí), Pascal PUPHAL, Ekaterina POMJAKUSHINA, Jeffery L. TALLON, Yves-Laurent MATHIS, Dominik MUNZAR (203 Česká republika, garant, domácí) 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: 18.100 v roce 2022
Kód RIV
RIV/00216224:14310/23:00131688
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000947200000001
Klíčová slova anglicky
infrared spectroscopy; high-Tc cuprates; strongly correlated electron systems
Štítky
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 13. 9. 2023 10:54, Mgr. Marie 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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