crta
Hrvatska znanstvena Sekcija img
bibliografija
3 gif
 Naslovna
 O projektu
 FAQ
 Kontakt
4 gif
Pregledavanje radova
Jednostavno pretraživanje
Napredno pretraživanje
Skupni podaci
Upis novih radova
Upute
Ispravci prijavljenih radova
Ostale bibliografije
Slični projekti
 Bibliografske baze podataka

Pregled bibliografske jedinice broj: 715123

Časopis

Autori: Pelc, Damjan; Požek, Miroslav; Despoja, Vito; Sunko, Denis
Naslov: Mechanism of metallization and superconductivity suppression in YBa2Cu2.97Zn0.03O6.92 revealed by 67Zn NQR
Izvornik: New journal of physics (1367-2630) 17 (2015); 083033-1-083033-10
Vrsta rada: članak
Ključne riječi: high-temperature superconductors ; zinc doping ; NQR ; DFT
Sažetak:
We measure the NQR signal on the Zn site in nearly optimally doped YBa2Cu3O6:92, when Cu is substituted by 3% isotopically pure 67Zn. We observe that Zn creates large insulating islands, confirming two earlier conjectures, that doping provokes an orbital transition in the CuO2 plane, which is locally reversed by Zn substitution, and that the islands are antiferromagnetic. Cluster and DFT calculations show that the D4 symmetry breaking, observed directly in the NQR signal here, is due to the same partial lifting of degeneracy of the nearest-neighbor oxygen sites as in the LTT transition in La2-xBaxCuO4, similarly well-known to strongly suppress superconductivity. These results prove that in-plane oxygen 2p5 orbital configurations are principally involved in the metallicity and SC of all high-Tc cuprates, and provide a qualitative symmetry-based constraint on the SC mechanism.
Projekt / tema: HRZZ-IP-2013-11-2729, 202301-202353, 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/10.1088/1367-2630/17/8/083033?fromSearchPage=true
Broj citata:
Altmetric:
DOI: 10.1088/1367-2630/17/8/083033
URL cjelovitog teksta:
Časopis izlazi u samo elektroničkom izdanju: DA
Google Scholar: Mechanism of metallization and superconductivity suppression in YBa2Cu2.97Zn0.03O6.92 revealed by 67Zn NQR
Upisao u CROSBI: Denis Sunko (dks@phy.hr), 15. Ruj. 2014. u 13:00 sati



  Verzija za printanje   za tiskati


upomoc
foot_4