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Pregled bibliografske jedinice broj: 715119

Časopis

Autori: Lazić, Predrag; Sunko, Denis
Naslov: Fermi arcs and pseudogap emerging from dimensional crossover at the Fermi surface in La2-xSrxCuO4
Izvornik: EPL (Europhysics Letters) (0295-5075) 112 (2015); 37011-1-37011-6
Vrsta rada: pismo
Ključne riječi: high-temperature superconductors; doping; ARPES; DFT
Sažetak:
The doping mechanism and realistic Fermi surface (FS) evolution of La$_{; ; 2-x}; ; $Sr$_x$CuO$_4$ (LSCO) are modelled within an extensive ab-initio framework including advanced band-unfolding techniques. We show that ordinary Kohn-Sham DFT+U can reproduce the observed metal-insulator transition, when not restricted to the paramagnetic solution space. Arcs are self-doped by orbital charge transfer within the Cu--O planes, while the introduced Sr charge is strongly localized. Arc protection and the inadequacy of the rigid-band picture are consequences of a rapid change in orbital symmetry at the Fermi energy: the material undergoes a dimensional crossover along the Fermi surface, between the nodal (2D) and antinodal (3D) regions. In LSCO, this crossover accounts for FS arcs, the antinodal pseudogap, and insulating behavior in $c$-axis conductivity, all ubiquitous phenomena in high-T$_c$ cuprates. Ligand Coulomb integrals involving out-of-plane sites are principally responsible for the most striking ffects observed by ARPES in LSCO.
Projekt / tema: 119-1191458-0512
Izvorni jezik: ENG
Rad je indeksiran u
bazama podataka:
Current Contents Connect (CCC)
Scopus
SCI-EXP, SSCI i/ili A&HCI
Science Citation Index Expanded (SCI-EXP) (sastavni dio Web of Science Core Collectiona)
Kategorija: Znanstveni
Znanstvena područja:
Fizika
URL Internet adrese: http://iopscience.iop.org/article/10.1209/0295-5075/112/37011/meta ; jsessionid=CE36922F95F268F2D6F80308B06B12CB.c2.iopscience.cld.iop.org
http://arxiv.org/abs/1409.1543
http://iopscience.iop.org/article/10.1209/0295-5075/112/37011/meta
Broj citata:
Altmetric:
DOI: 10.1209/0295-5075/112/37011
URL cjelovitog teksta: http://iopscience.iop.org/article/10.1209/0295-5075/112/37011/meta ; jsessionid=CE36922F95F268F2D6F80308B06B12CB.c2.iopscience.cld.iop.org
Google Scholar: Fermi arcs and pseudogap emerging from dimensional crossover at the Fermi surface in La2-xSrxCuO4
Upisao u CROSBI: Denis Sunko (dks@phy.hr), 15. Ruj. 2014. u 12:56 sati



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