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Density of mechanisms within the flexibility window of zeolites

Autor: Kapko, V., Dawson, C., Rivin, I., Treacy, M. M. J.

By treating idealized zeolite frameworks as periodic mechanical trusses, we show that the number of flexible folding mechanisms in zeolite frameworks is strongly peaked at the minimum density end of their flexibility window. 25 of the 197 known zeoli

Externí odkaz: http://arxiv.org/abs/1109.5203

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Thermodynamic Behavior of a Model Covalent Material Described by the Environment-Dependent Interatomic Potential

Autor: Keblinski, P., Bazant, M. Z., Dash, R. K., Treacy, M. M.

Using molecular dynamics simulations we study the thermodynamic behavior of a single-component covalent material described by the recently proposed Environment-Dependent Interatomic Potential (EDIP). The parameterization of EDIP for silicon exhibits

Externí odkaz: http://arxiv.org/abs/cond-mat/0206214

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Efficient Switching and Domain Interlocking Observed in Polyaxial Ferroelectrics

Autor: Krishnan, A., Treacy, M. M. J., Bisher, M. E., Chandra, P., Littlewood, P. B.

We present in-situ transmission electron microscopy observations of domain wall motion in thin freestanding potassium niobate single-crystals. We observe that not all domains of a given polarization orientation are equally switchable in applied elect

Externí odkaz: http://arxiv.org/abs/cond-mat/0106173

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Holes in a Quantum Spin Liquid

Autor: Xu, Guangyong, Aeppli, G., Bisher, M. E., Broholm, C., DiTusa, J. F., Frost, C. D., Ito, T., Oka, K., Paul, R. L., Takagi, H., Treacy, M. M. J.

Publikováno v: published in Science, 289 (5478) 419-422 (2000)

Magnetic neutron scattering provides evidence for nucleation of antiferromagnetic droplets around impurities in a doped nickel-oxide based quantum magnet. The undoped parent compound contains a spin liquid with a cooperative singlet ground state and

Externí odkaz: http://arxiv.org/abs/cond-mat/0102445

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