000148134 001__ 148134 000148134 005__ 20250115151522.0 000148134 0247_ $$2doi$$a10.1088/0953-8984/24/10/104007 000148134 0248_ $$2sideral$$a141513 000148134 037__ $$aART-2012-141513 000148134 041__ $$aeng 000148134 100__ $$0(orcid)0000-0002-3448-9831$$aCalvo-Almazán, I 000148134 245__ $$aA theoretical study of rotational and translational diffusion dynamics of molecules with a six-fold point symmetry adsorbed on a hexagonal lattice by neutron scattering 000148134 260__ $$c2012 000148134 5060_ $$aAccess copy available to the general public$$fUnrestricted 000148134 5203_ $$aA complete analytical model for the rotational and translational diffusion of molecules with a six-fold point symmetry on a hexagonal lattice is presented. It can be applied, in particular, to the diffusion of benzene molecules adsorbed flat on the basal plane of graphite in the case of incoherent scattering. Under the weak hindered approximation, the classical mechanics framework and making use of the van Hove formalism of correlation functions, the intermediate scattering function and its Fourier transform, the scattering law, are both obtained. They can be expressed as sums of exponential decays or Lorentzian functions, respectively, containing the contribution of each of the dynamical processes taking place. In the case of benzene lying flat on the substrate we expect translational diffusion, continuous rotations of isolated molecules and hindered rotations of molecules within clusters. Each particular diffusive mechanism can be recognized owing to its particular signature in the dependence of the quasi-elastic broadening on the momentum transfer. 000148134 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/ 000148134 590__ $$a2.355$$b2012 000148134 591__ $$aPHYSICS, CONDENSED MATTER$$b20 / 68 = 0.294$$c2012$$dQ2$$eT1 000148134 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion 000148134 700__ $$aMiret-Artés, S 000148134 700__ $$aFouquet, P 000148134 773__ $$g24, 10 (2012), 104007 [10 pp.]$$pJ. phys., Condens. matter$$tJournal of Physics Condensed Matter$$x0953-8984 000148134 8564_ $$s1020045$$uhttps://zaguan.unizar.es/record/148134/files/texto_completo.pdf$$yPostprint 000148134 8564_ $$s1265561$$uhttps://zaguan.unizar.es/record/148134/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint 000148134 909CO $$ooai:zaguan.unizar.es:148134$$particulos$$pdriver 000148134 951__ $$a2025-01-15-15:14:43 000148134 980__ $$aARTICLE