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Exact diagonalization study of the effects of Zn and Ni impurities on the pseudogap of underdoped cuprate high-Tc superconductors

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F16%3A00090945" target="_blank" >RIV/00216224:14310/16:00090945 - isvavai.cz</a>

  • Result on the web

    <a href="http://journals.aps.org/prb/pdf/10.1103/PhysRevB.93.094512" target="_blank" >http://journals.aps.org/prb/pdf/10.1103/PhysRevB.93.094512</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1103/PhysRevB.93.094512" target="_blank" >10.1103/PhysRevB.93.094512</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Exact diagonalization study of the effects of Zn and Ni impurities on the pseudogap of underdoped cuprate high-Tc superconductors

  • Original language description

    The influence of Zn and Ni impurities on the normal-state pseudogap of underdoped high-Tc cuprate superconductors is studied using exact diagonalization of effective t - J-like Hamiltonians describing low energy electronic excitations of the CuO2 plane with some of the copper ions replaced with Zn/Ni. The Ni case Hamiltonian has been obtained by a sequence of approximations from a more complete model involving Cu 3d, Ni 3d, and O 2p orbitals. Our main findings are: (i) The width OmegaPG of the pseudogap occurring in the many body density of states, and manifesting itself also in the c-axis infrared conductivity, decreases with increasing Zn concentration as a consequence of a suppression of short range spin correlations. (ii) In the case of one hole and one Ni impurity, the hole is, for realistic values of the model parameters, weakly bound to the Ni site. This causes a slight increase of OmegaPG with respect to the pure case.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    BM - Solid-state physics and magnetism

  • OECD FORD branch

Result continuities

  • Project

    <a href="/en/project/LQ1601" target="_blank" >LQ1601: CEITEC 2020</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2016

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Physical Review B

  • ISSN

    2469-9950

  • e-ISSN

  • Volume of the periodical

    93

  • Issue of the periodical within the volume

    9

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    12

  • Pages from-to

    "nestrankovano"

  • UT code for WoS article

    000371729000007

  • EID of the result in the Scopus database