The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform

Eugene H Stanley - One of the best experts on this subject based on the ideXlab platform.

  • absence of a diffusion anomaly of water in the Direction Perpendicular to hydrophobic nanoconfining walls
    Physical Review E, 2008
    Co-Authors: Sungho Han, Pradeep Kumar, Eugene H Stanley
    Abstract:

    We perform molecular dynamics simulations to investigate the diffusive motion of TIP5P the transferable intermolecular potential with five points water in the Direction Perpendicular to the two hydrophobic confining walls. To calculate the diffusion constant, we use the concept of the characteristic residence time which is calculated from the exponential decay of the residence time probability density function. We find that a diffusion anomaly, increase of diffusion upon compression, is absent in the Direction Perpendicular to the confining walls down to the lowest temperature we simulate, 220 K, whereas there is a diffusion anomaly, similar to that in bulk water, in the Direction parallel to the walls. The absence of a diffusion anomaly in the Direction Perpendicular to the walls may arise mainly due to nanoconfinement, rather than due to the hydrophobic property of the confining walls. In addition, we find that the temperature dependence of the diffusion constant along the constant density path in the Perpendicular Direction shows a Vogel-Fulcher-Tammann form.

Ewa Mlynczak - One of the best experts on this subject based on the ideXlab platform.

  • spin polarized quantized electronic structure of fe 001 with symmetry breaking due to the magnetization Direction
    Physical Review B, 2021
    Co-Authors: Ewa Mlynczak, Irene Aguilera, Pika Gospodaric, Tristan Heider, Matteo Jugovac, Giovanni Zamborlini, C Tusche, S Suga
    Abstract:

    Quantum well states are responsible for many fundamental phenomena that oscillate with layer thickness, such as magnetic anisotropy or magnetoresistance. Here, the authors present the magnetization-dependent quantized electronic states of Fe(001), mapped in unprecedented detail using spin-resolved momentum microscopy and high-resolution angle-resolved photoemission. The experimental observations are compared with photoemission simulations, based on the bulk initial electronic band structure, which include quantization of the initial states and broadening of the final states along the wave vector Direction Perpendicular to the sample surface.

Sungho Han - One of the best experts on this subject based on the ideXlab platform.

  • absence of a diffusion anomaly of water in the Direction Perpendicular to hydrophobic nanoconfining walls
    Physical Review E, 2008
    Co-Authors: Sungho Han, Pradeep Kumar, Eugene H Stanley
    Abstract:

    We perform molecular dynamics simulations to investigate the diffusive motion of TIP5P the transferable intermolecular potential with five points water in the Direction Perpendicular to the two hydrophobic confining walls. To calculate the diffusion constant, we use the concept of the characteristic residence time which is calculated from the exponential decay of the residence time probability density function. We find that a diffusion anomaly, increase of diffusion upon compression, is absent in the Direction Perpendicular to the confining walls down to the lowest temperature we simulate, 220 K, whereas there is a diffusion anomaly, similar to that in bulk water, in the Direction parallel to the walls. The absence of a diffusion anomaly in the Direction Perpendicular to the walls may arise mainly due to nanoconfinement, rather than due to the hydrophobic property of the confining walls. In addition, we find that the temperature dependence of the diffusion constant along the constant density path in the Perpendicular Direction shows a Vogel-Fulcher-Tammann form.

P E J Eriksson - One of the best experts on this subject based on the ideXlab platform.

V L Pokrovsky - One of the best experts on this subject based on the ideXlab platform.

  • microscopic model for the magnetic subsystem in honi2b2c
    Physical Review B, 1998
    Co-Authors: V A Kalatsky, V L Pokrovsky
    Abstract:

    We demonstrate that the system of localized magnetic moments in ${\mathrm{HoNi}}_{2}{\mathrm{B}}_{2}\mathrm{C}$ can be described by the four-positional clock model. This model, at a proper choice of the coupling constants, yields several meta-magnetic phases in magnetic field at zero temperature in full agreement with the experimental phase diagram. The model incorporates couplings between non-nearest neighbors in the Direction Perpendicular to the ferromagnetic planes. The same model leads to a $c$-modulated magnetic phase near the Curie temperature. The theoretical value of the modulation wave vector agrees surprisingly well with that observed by the neutron-diffraction experiment without new adjustable parameters.