Analogies of phonon anomalies and electronic gap features in the infrared response of Sr (14-x) Ca x Cu24O41 and underdoped YBa2Cu3O 6+x

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F23%3A00131688" target="_blank" >RIV/00216224:14310/23:00131688 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1088/1361-6633/acbe4f" target="_blank" >https://doi.org/10.1088/1361-6633/acbe4f</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1361-6633/acbe4f" target="_blank" >10.1088/1361-6633/acbe4f</a>

Result language

angličtina

Original language name

Analogies of phonon anomalies and electronic gap features in the infrared response of Sr (14-x) Ca x Cu24O41 and underdoped YBa2Cu3O 6+x

Original language description

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.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

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

Project

<a href="/en/project/EF19_073%2F0016943" target="_blank" >EF19_073/0016943: Internal grant agency of Masaryk University</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2023

Confidentiality

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

Name of the periodical

Reports on Progress in Physics

ISSN

0034-4885

e-ISSN

1361-6633

Volume of the periodical

86

Issue of the periodical within the volume

4

Country of publishing house

GB - UNITED KINGDOM

Number of pages

32

Pages from-to

1-32

UT code for WoS article

000947200000001

EID of the result in the Scopus database

2-s2.0-85150001416