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Microscopic properties of the "pinwheel" kagome compound Rb2Cu3SnF12


Grbić, Mihael Srđan; Krämer, Steffen; Berthier, Claude; Trousselet, Fabien; Cépas, Olivier; Tanaka, Hidekazu; Horvatić, Mladen
Microscopic properties of the "pinwheel" kagome compound Rb2Cu3SnF12 // Physical Review Letters, 110 (2013), 24; 247203-1 doi:10.1103/PhysRevLett.110.247203 (međunarodna recenzija, članak, znanstveni)


Naslov
Microscopic properties of the "pinwheel" kagome compound Rb2Cu3SnF12

Autori
Grbić, Mihael Srđan ; Krämer, Steffen ; Berthier, Claude ; Trousselet, Fabien ; Cépas, Olivier ; Tanaka, Hidekazu ; Horvatić, Mladen

Izvornik
Physical Review Letters (0031-9007) 110 (2013), 24; 247203-1

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Frustration; magnetism; singlet; valence bond

Sažetak
Using {; ; ; ; ; 63, 65}; ; ; ; ; Cu nuclear magnetic resonance (NMR) in magnetic fields up to 30 T we study the microscopic properties of the 12-site valence-bond-solid ground state in the "pinwheel" kagome compound Rb2Cu3SnF12. We find that the ground state is characterized by a strong transverse staggered spin polarization whose temperature and field dependence points to a mixing of the singlet and triplet states. This is further corroborated by the field dependence of the gap \Delta (H), which has a level anticrossing with a large minimum gap value of \Delta(0), with no evidence of a phase transition down to 1.5 K. By the exact diagonalization of small clusters, we show that the observed anticrossing is mainly due to staggered tilts of the g-tensors defined by the crystal structure, and reveal symmetry properties of the low-energy excitation spectrum compatible with the absence of level crossing.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

Napomena
Uz rad je objavljen i Supplementary Material koji je dostpan na web-stranicama izdavača.



POVEZANOST RADA


Projekt / tema
119-1191458-1022 - Mikrovalna istraživanja novih materijala (Miroslav Požek, )

Ustanove
Prirodoslovno-matematički fakultet, Zagreb

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus
  • MEDLINE


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