Now showing items 1-6 of 6

  • Characterizing ordering in liquids: An information theoretic approach 

    Pardo Soto, Luis Carlos; Henao Aristizábal, Andrés; Vispa, Alessandro (2015-01-01)
    Article
    Open Access
    The determination of special molecular arrangements in disordered phases such as liquids is inherently difficult due to its lack of periodicity, in contrast to the crystalline solids. We have already settled a general ...
  • Effects of site-occupation disorder on the low-temperature thermal conductivity of molecular crystals 

    Krivchikov, Alexander I; Vdovichenko, Georgii A.; Korolyuk, O. A.; Bermejo, F. Javier; Pardo Soto, Luis Carlos; Tamarit Mur, José Luis; Jezowski, Andrzej; Szewczyk, Daria (2015-01-01)
    Article
    Open Access
    The thermal conductivity of CBrnCl4-n,(n = 0,1,2) and 2-adamantanone (C10H14O) crystals which exhibit substitutional disorder has been measured for temperatures between 2 K and 150 K. Such temperatures comprise signatures ...
  • Periodicity in bimodal atomic force microscopy 

    Lai, Chia-Yun; Barcons Xixons, Víctor; Santos, Sergio; Chiesa, Matteo (American Institute of Physics (AIP), 2015-07-28)
    Article
    Open Access
    Periodicity is fundamental for quantification and the application of conservation principles of many important systems. Here, we discuss periodicity in the context of bimodal atomic force microscopy (AFM). The relationship ...
  • Phase contrast and operation regimes in multifrequency atomic force microscopy 

    Santos Hernández, Sergio (2014-04-07)
    Article
    Open Access
    In amplitude modulation atomic force microscopy the attractive and the repulsive force regimes induce phase shifts above and below 90°, respectively. In the more recent multifrequency approach, however, multiple operation ...
  • Quantum phase transition with a simple variational ansatz 

    Lutsyshyn, Yaroslav; Astrakharchik, Grigori; Cazorla, C; Boronat Medico, Jordi (2014-12-11)
    Article
    Open Access
    We study the zero-temperature quantum phase transition between liquid and hcp solid He-4. We use the variational method with a simple yet exchange-symmetric and fully explicit wave function. It is found that the optimized ...
  • Unlocking higher harmonics in atomic force microscopy with gentle interactions 

    Santos Hernández, Sergio; Barcons Xixons, Víctor; Font Teixidó, Josep; Verdaguer Prats, Albert (2014-03-11)
    Article
    Open Access
    In dynamic atomic force microscopy, nanoscale properties are encoded in the higher harmonics. Nevertheless, when gentle interactions and minimal invasiveness are required, these harmonics are typically undetectable. Here, ...