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Lattice vibrations of the charge-transfer salt kappa-(BEDT-TTF)2Cu2(CN)3 : Comprehensive explanation of the electrodynamic response in a spin liquid compound


Dressel, M; Lazić, Predrag; Pustogow, A.; Zhukova, E.; Gorshunov, B.; Schlueter, J.A.; Milat, Ognjen; Gumhalter, Branko; Tomić, Silvia
Lattice vibrations of the charge-transfer salt kappa-(BEDT-TTF)2Cu2(CN)3 : Comprehensive explanation of the electrodynamic response in a spin liquid compound // Physical review. B., 93 (2016), 8; 081201(R), 5 doi:10.1103/PhysRevB.93.081201 (međunarodna recenzija, članak, znanstveni)


Naslov
Lattice vibrations of the charge-transfer salt kappa-(BEDT-TTF)2Cu2(CN)3 : Comprehensive explanation of the electrodynamic response in a spin liquid compound

Autori
Dressel, M ; Lazić, Predrag ; Pustogow, A. ; Zhukova, E. ; Gorshunov, B. ; Schlueter, J.A. ; Milat, Ognjen ; Gumhalter, Branko ; Tomić, Silvia

Izvornik
Physical review. B. (2469-9950) 93 (2016), 8; 081201(R), 5

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

Ključne riječi
Strongly correlated systems ; electronic structure ; lattice vibrations ; electrodynamics ; dft calculations

Sažetak
The dimer Mott insulator $\kappa$-(BEDT-TTF)$_2$Cu$_2$(CN)$_3$ exhibits unusual electrodynamic properties. Numerical investigations of the electronic ground state and the molecular and lattice vibrations reveal the importance of the Cu$_2$(CN)$_3^-$ anion network coupled to the BEDT-TTF molecules: The threefold cyanide coordination of copper and linkage isomerism in the anion structure cause a loss of symmetry, frustration, disorder, and domain formation. Our findings consistently explain the temperature and po\-lar\-i\-zation-dependent THz and infrared measurements, reinforce the understanding of dielectric properties and have important implications for the quantum spin-liquid state, which should be treated beyond two-dimensional, purely electronic models.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

Napomena
Rad ima 5 stranica + 14 stranica supplement material.



POVEZANOST RADA


Projekt / tema
EK-H2020-692194 (Fabrizio NESTI, EK - H2020-TWINN-2015)
HRZZ-IP-2013-11-1011 - Jako korelirani elektroni u slojnim organskim materijalima i manganitima: niskofrekventna pobuđenja i nelinearna dinamika (Silvia Tomić, )

Ustanove
Institut za fiziku, Zagreb,
Institut "Ruđer Bošković", 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


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