• Disentangling a and ß relaxation in orientationally disordered crystals with theory and experiments 

    Cui, Bingyu; Gebbia, Jonathan Fernando; Tamarit Mur, José Luis; Zaccone, Asessio (American Institute of Physics (AIP), 2018-05-21)
    Article
    Accés obert
    We use a microscopically motivated Generalized Langevin Equation (GLE) approach to link the vibrational density of states (VDOS) to the dielectric response of orientational glasses (OGs). The dielectric function calculated ...
  • Emergence of glassy features in halomethane crystals 

    Moratalla Martín, Manuel Eduardo; Gebbia, Jonathan Fernando; Ramos Ruiz, Miguel Angel; Pardo Soto, Luis Carlos; Tamarit Mur, José Luis (American Physical Society (APS), 2019-01-02)
    Article
    Accés obert
    Both structural glasses and disordered crystals are known to exhibit anomalous thermal, vibrational, and acoustic properties at low temperatures or low energies, what is still a matter of lively debate. To shed light on ...
  • Glassy Anomalies in the Low-Temperature Thermal Properties of a Minimally Disordered Crystalline Solid 

    Gebbia, Jonathan Fernando; Ramos, M. A.; Szewczyk, Daria; Jezowski, Andrzej; Krivchikov, Alexander; Horbatenko, Y.V; Guidi, T.; Bermejo, F. J.; Tamarit Mur, José Luis (2017-11-21)
    Article
    Accés obert
    The low-temperature thermal and transport properties of an unusual kind of crystal exhibiting minimal molecular positional and tilting disorder have been measured. The material, namely, low-dimensional, highly anisotropic ...
  • Multiferroic and related hysteretic behavior in ferromagnetic shape memory alloys 

    Gebbia, Jonathan Fernando; Castán Vidal, Teresa; Lloveras Muntané, Pol Marcel; Porta Tena, Marcel; Saxena, Avadh; Planes Vila, Antoni (2017-08-29)
    Article
    Accés obert
    We combine a Ginzburg–Landau model for a ferroelastic transition with the theory of micromagnetism to study the magnetostructural behavior leading to multicaloric effects in ferromagnetic shape memory alloys. We analyze ...