TY  - JOUR
AU  - Dobrosavljevic-Grujic, L
AU  - Jovanović, Vladimir P.
AU  - Žikić, Radomir
PY  - 2005
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/148
AB  - We calculate self-consistently in-plane superfluid density rho(parallel to)(s) in planar organic superconductors to]for three types of pairing symmetry: d(x2-y2), d(xy)-like and extended s-wave pairing. Assuming strong dimerization, we consider a single band model with elliptical Fermi surface to evaluate: the temperature dependence rho(parallel to)(s) (T) in K-(BEDT-TTF)(2)X compounds for those types of pairing. The obtained results, compared with measurements of the superfluid density in k-(BEDT-TTF)(2)Cu[N(CN)(2)]Br, strongly suggest that in these compounds the gap symmetry, influenced by cooling history, in the "ground state" with the least disorder is of the extended s-wave type. Possible physical reasons for agreement of d(x2-y2), and/or isotropic s-wave pairing with experirncntal results in more disordered "interniediate state" are discussed.
PB  - Elsevier, Amsterdam
T2  - Physica C-Superconductivity and Its Applications
T1  - Superfluid density and pairing in planar organic superconductors
EP  - 146
IS  - 3-4
SP  - 140
VL  - 432
DO  - 10.1016/j.physc.2005.07.020
ER  - 

@article{
author = "Dobrosavljevic-Grujic, L and Jovanović, Vladimir P. and Žikić, Radomir",
year = "2005",
abstract = "We calculate self-consistently in-plane superfluid density rho(parallel to)(s) in planar organic superconductors to]for three types of pairing symmetry: d(x2-y2), d(xy)-like and extended s-wave pairing. Assuming strong dimerization, we consider a single band model with elliptical Fermi surface to evaluate: the temperature dependence rho(parallel to)(s) (T) in K-(BEDT-TTF)(2)X compounds for those types of pairing. The obtained results, compared with measurements of the superfluid density in k-(BEDT-TTF)(2)Cu[N(CN)(2)]Br, strongly suggest that in these compounds the gap symmetry, influenced by cooling history, in the "ground state" with the least disorder is of the extended s-wave type. Possible physical reasons for agreement of d(x2-y2), and/or isotropic s-wave pairing with experirncntal results in more disordered "interniediate state" are discussed.",
publisher = "Elsevier, Amsterdam",
journal = "Physica C-Superconductivity and Its Applications",
title = "Superfluid density and pairing in planar organic superconductors",
pages = "146-140",
number = "3-4",
volume = "432",
doi = "10.1016/j.physc.2005.07.020"
}

Dobrosavljevic-Grujic, L., Jovanović, V. P.,& Žikić, R.. (2005). Superfluid density and pairing in planar organic superconductors. in Physica C-Superconductivity and Its Applications
Elsevier, Amsterdam., 432(3-4), 140-146.
https://doi.org/10.1016/j.physc.2005.07.020

Dobrosavljevic-Grujic L, Jovanović VP, Žikić R. Superfluid density and pairing in planar organic superconductors. in Physica C-Superconductivity and Its Applications. 2005;432(3-4):140-146.
doi:10.1016/j.physc.2005.07.020 .

Dobrosavljevic-Grujic, L, Jovanović, Vladimir P., Žikić, Radomir, "Superfluid density and pairing in planar organic superconductors" in Physica C-Superconductivity and Its Applications, 432, no. 3-4 (2005):140-146,
https://doi.org/10.1016/j.physc.2005.07.020 . .

TY  - JOUR
AU  - Jovanović, Vladimir P.
AU  - Žikić, Radomir
AU  - Dobrosavljevic-Grujic, L
PY  - 2005
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/119
AB  - The nature of superconductivity in planar organics is still a controversial problem. We investigate two types of d-wave and extended s-wave pairing proposed theoretically in a model of kappa-(BEDT-TTF)(2)X organic superconductors. As probes of the pairing symmetry, we calculate the density of states, the tunnelling conductance, the specific heat, and the spin susceptibility. The sensibility of superconductivity to the sample preparation suggests that beside the symmetric d(x2-y2) gap, which appears to be consistent with some experiments (for the specific heat, see Nakazawa and Kanoda, Phys. Rev. B 55 (1995) R8670, for STM, Arai et al., Phys. Rev. B 63 (2001) 194518, and for NMR, Mayaffre et al., Phys. Rev. Lett. 75 (1995) 4122) the asymmetric d(xy)-like or extended s-wave gaps could occur. We show that in comparison with the d(x2-y2) case this should be manifested by a more rapid increase of the specific heat at low temperature, by the presence of inner peaks on the density of states and conductance curves at low temperature, and by a different curvature of the spin susceptibility temperature dependence.
PB  - Elsevier, Amsterdam
T2  - Physica C-Superconductivity and Its Applications
T1  - Pairing in planar organic superconductors
EP  - 21
IS  - 1-2
SP  - 15
VL  - 423
DO  - 10.1016/j.physc.2005.03.015
ER  - 

@article{
author = "Jovanović, Vladimir P. and Žikić, Radomir and Dobrosavljevic-Grujic, L",
year = "2005",
abstract = "The nature of superconductivity in planar organics is still a controversial problem. We investigate two types of d-wave and extended s-wave pairing proposed theoretically in a model of kappa-(BEDT-TTF)(2)X organic superconductors. As probes of the pairing symmetry, we calculate the density of states, the tunnelling conductance, the specific heat, and the spin susceptibility. The sensibility of superconductivity to the sample preparation suggests that beside the symmetric d(x2-y2) gap, which appears to be consistent with some experiments (for the specific heat, see Nakazawa and Kanoda, Phys. Rev. B 55 (1995) R8670, for STM, Arai et al., Phys. Rev. B 63 (2001) 194518, and for NMR, Mayaffre et al., Phys. Rev. Lett. 75 (1995) 4122) the asymmetric d(xy)-like or extended s-wave gaps could occur. We show that in comparison with the d(x2-y2) case this should be manifested by a more rapid increase of the specific heat at low temperature, by the presence of inner peaks on the density of states and conductance curves at low temperature, and by a different curvature of the spin susceptibility temperature dependence.",
publisher = "Elsevier, Amsterdam",
journal = "Physica C-Superconductivity and Its Applications",
title = "Pairing in planar organic superconductors",
pages = "21-15",
number = "1-2",
volume = "423",
doi = "10.1016/j.physc.2005.03.015"
}

Jovanović, V. P., Žikić, R.,& Dobrosavljevic-Grujic, L.. (2005). Pairing in planar organic superconductors. in Physica C-Superconductivity and Its Applications
Elsevier, Amsterdam., 423(1-2), 15-21.
https://doi.org/10.1016/j.physc.2005.03.015

Jovanović VP, Žikić R, Dobrosavljevic-Grujic L. Pairing in planar organic superconductors. in Physica C-Superconductivity and Its Applications. 2005;423(1-2):15-21.
doi:10.1016/j.physc.2005.03.015 .

Jovanović, Vladimir P., Žikić, Radomir, Dobrosavljevic-Grujic, L, "Pairing in planar organic superconductors" in Physica C-Superconductivity and Its Applications, 423, no. 1-2 (2005):15-21,
https://doi.org/10.1016/j.physc.2005.03.015 . .

TY  - CONF
AU  - Žikić, Radomir
AU  - Jovanović, Vladimir P.
AU  - Dobrosavljevic-Grujic, L
PY  - 2004
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2157
AB  - The nature of superconductivity in planar organics is still a controversial problem. We investigate theoretically d-wave and anisotropic s-wave pairing in k-(BEDT-TTF)2X compounds. Assuming strong dimerization, we consider a single band model with elliptical Fermi surface to calculate density of states, specific heat and spin susceptibility as functions of temperature. The obtained results, compared with experiments, should help to resolve the question of pairing symmetry.
PB  - Institute of Physics,Belgrade Pregrevica 118, Zemun, Serbia and Montenegro
C3  - XVI National Symposium on Condensed Matter Physics, Sokobanja 2004
T1  - Pairing in planar organic superconductors
EP  - 269
SP  - 265
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_2157
ER  - 

@conference{
author = "Žikić, Radomir and Jovanović, Vladimir P. and Dobrosavljevic-Grujic, L",
year = "2004",
abstract = "The nature of superconductivity in planar organics is still a controversial problem. We investigate theoretically d-wave and anisotropic s-wave pairing in k-(BEDT-TTF)2X compounds. Assuming strong dimerization, we consider a single band model with elliptical Fermi surface to calculate density of states, specific heat and spin susceptibility as functions of temperature. The obtained results, compared with experiments, should help to resolve the question of pairing symmetry.",
publisher = "Institute of Physics,Belgrade Pregrevica 118, Zemun, Serbia and Montenegro",
journal = "XVI National Symposium on Condensed Matter Physics, Sokobanja 2004",
title = "Pairing in planar organic superconductors",
pages = "269-265",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_2157"
}

Žikić, R., Jovanović, V. P.,& Dobrosavljevic-Grujic, L.. (2004). Pairing in planar organic superconductors. in XVI National Symposium on Condensed Matter Physics, Sokobanja 2004
Institute of Physics,Belgrade Pregrevica 118, Zemun, Serbia and Montenegro., 265-269.
https://hdl.handle.net/21.15107/rcub_rimsi_2157

Žikić R, Jovanović VP, Dobrosavljevic-Grujic L. Pairing in planar organic superconductors. in XVI National Symposium on Condensed Matter Physics, Sokobanja 2004. 2004;:265-269.
https://hdl.handle.net/21.15107/rcub_rimsi_2157 .

Žikić, Radomir, Jovanović, Vladimir P., Dobrosavljevic-Grujic, L, "Pairing in planar organic superconductors" in XVI National Symposium on Condensed Matter Physics, Sokobanja 2004 (2004):265-269,
https://hdl.handle.net/21.15107/rcub_rimsi_2157 .