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Scientific paper - Original scientific paper
Characterization of two electronic subsystems in cuprates through optical conductivity
Physical Review B, 107 (2023), 14; 144515. https://doi.org/10.1103/PhysRevB.107.144515
Kumar, C. M. N.; Akrap, Ana; Homes, C. C.; Martino, E.; Klebel-Knobloch, B.; Tabis, W.; Barišić, Osor Slaven; Sunko, Denis K.; Barišić, Neven

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Kumar, C. M. N., Akrap, A., Homes, C. C., Martino, E., Klebel Knobloch, B., Tabis, W. ... Barišić, N. (2023). Characterization of two electronic subsystems in cuprates through optical conductivity. Physical Review B, 107. (14). doi: 10.1103/PhysRevB.107.144515

Kumar, C. M. N., et al. "Characterization of two electronic subsystems in cuprates through optical conductivity." Physical Review B, vol. 107, no. 14, 2023. https://doi.org/10.1103/PhysRevB.107.144515

Kumar, C. M. N., Ana Akrap, C. C. Homes, E. Martino, B. Klebel Knobloch, W. Tabis, Osor Slaven Barišić, Denis K. Sunko and Neven Barišić. "Characterization of two electronic subsystems in cuprates through optical conductivity." Physical Review B 107, no. 14 (2023). https://doi.org/10.1103/PhysRevB.107.144515

Kumar, C. M. N., et al. (2023) 'Characterization of two electronic subsystems in cuprates through optical conductivity', Physical Review B, 107(14). doi: 10.1103/PhysRevB.107.144515

Kumar CMN, Akrap A, Homes CC, Martino E, Klebel Knobloch B, Tabis W, and sur.. Characterization of two electronic subsystems in cuprates through optical conductivity. Physical Review B [Internet]. 2023 [cited 2024 November 04];107(14). doi: 10.1103/PhysRevB.107.144515

C. M. N. Kumar, et al., "Characterization of two electronic subsystems in cuprates through optical conductivity", Physical Review B, vol. 107, no. 14, 2023. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:251723. [Accessed: 04 November 2024]

Metadata
Title (english)Characterization of two electronic subsystems in cuprates through optical conductivity
AuthorC. M. N. Kumar
AuthorAna Akrap
AuthorC. C. Homes
AuthorE. Martino
AuthorB. Klebel-Knobloch
AuthorW. Tabis
AuthorOsor Slaven Barišić
AuthorDenis K. Sunko
AuthorNeven Barišić
Author's institutionUniversity of Zagreb
Faculty of Science
(Department of Physics)
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract (english)
Understanding the physical properties of unconventional superconductors as well as of other correlated materials presents a formidable challenge. Their unusual evolution with doping, frequency, and temperature has frequently led to non-Fermi-liquid (non-FL) interpretations. Optical conductivity is a major challenge in this context. Here, the optical spectra of two archetypal cuprates, underdoped HgBa2⁢CuO4+𝛿 and optimally doped Bi2⁢Sr2⁢CaCu2⁢O8+𝛿, are interpreted based on the standard Fermi-liquid (FL) paradigm. At both dopings, perfect frequency-temperature FL scaling is found to be modified by the presence of a second, gapped electronic subsystem. This non-FL component emerges as a well-defined mid-infrared spectral feature after the FL contribution, determined independently by transport, is subtracted. Temperature, frequency, and doping evolution of the MIR feature identify a gapped rather than dissipative response. In contrast, the dissipative response is found to be relevant for pnictides and ruthenates. Such an unbiased FL/non-FL separation is extended across the cuprate phase diagram, capturing all the key features of the normal state and providing a natural explanation why the superfluid density is attenuated on the overdoped side. Thus, we obtain a unified interpretation of optical responses and transport measurements in all analyzed physical regimes and all analyzed compounds.
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Journal titlePhysical Review B
Numberingvol. 107, no. 14, 144515
p-ISSN2469-9950
e-ISSN2469-9969
DOIhttps://doi.org/10.1103/PhysRevB.107.144515
URN:NBNurn:nbn:hr:217:251723
Publication2023
ProjectNumber: 725521
Title (croatian): The Janus-face of the localized carrier in cuprates: Generating the pseudogap and high temperature superconductivity
Title (english): The Janus-face of the localized carrier in cuprates: Generating the pseudogap and high temperature superconductivity
Acronym: TheONE
Jurisdiction: eu
Funding stream: European Research Council
ProjectNumber: IP-2018-01-7828
Title (croatian): Sulfasoli: nova generacija kompleksnih funkcionalnih materijala
Title (english): Sulfosalts: new generation of complex fuctional materials
Acronym: SulfNewFunMat
Leader: Denis Sunko
Jurisdiction: Croatia
Funding stream: Research Projects
ProjectNumber: KK.01.1.1.02.0013
Title (croatian): Centar za Napredna Istraživanja Kompleksnih Sustava
Title (english): Centre for Advanced Research of Complex Systems
Acronym: CeNIKS
Leader: Mihael Srđan Grbić
Jurisdiction: eu
Funding stream: European Regional Development Fund
ProjectNumber: KK.01.1.1.01.0004
Title (croatian): Provedba vrhunskih istraživanja u sklopu Znanstvenog centra izvrsnosti za kvantne i kompleksne sustave te reprezentacije Liejevih algebri
Title (english): Implementation of top research within the Scientific Center of Excellence for Quantum and Complex Systems, and Representations of Lie Algebras
Acronym: QuantiXLie
Leader: Hrvoje Buljan
Jurisdiction: eu
Funding stream: European Regional Development Fund
Document URLhttps://link.aps.org/doi/10.1103/PhysRevB.107.144515
Type of resourceText
Access conditionsOpen access
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Public note© 2023 American Physical Society. Received 1 July 2022. Revised 7 April 2023. Accepted 12 April 2023. Published 27 April 2023.
Created on2024-07-23 11:00:13