منابع مشابه
Frustration in biomolecules.
Biomolecules are the prime information processing elements of living matter. Most of these inanimate systems are polymers that compute their own structures and dynamics using as input seemingly random character strings of their sequence, following which they coalesce and perform integrated cellular functions. In large computational systems with finite interaction-codes, the appearance of confli...
متن کاملFrustration in ferromagnetic materials
We examine the theory of micromagnetics developed by W. F. Brown. We show that in the case often considered, with exchange energy omitted, the minimum of the free energy is not attained for uniaxial materials but is attained for cubic materials. A study of the minimizing sequences reveals that these accurately model many features of observed domain structure. Finally, we reexamine the so-called...
متن کاملGeometrical Frustration
© 2006 American Institute of Physics, S-0031-9228-0602-010-2 T ancient Greeks were aware of the phenomenon of magnetic order in lodestone, a type of rock containing the ferromagnet magnetite Fe3O4. Magnetic moments in a ferromagnet tend to align and thereby sum to an easily observed macroscopic magnetic moment. The absence of such a moment even in ordered antiferromagnets is the reason their di...
متن کاملHelices in biomolecules.
Identical objects, regularly assembled, form a helix, which is the principal motif of nucleic acids, proteins, and viral capsids.
متن کاملHierarchical geometric frustration in La3Cu2VO9
The crystallographic structure and magnetic properties of the La3Cu2VO9 were investigated by powder neutron diffraction and magnetization measurements. The compound materializes geometric frustration at two spatial scales, within clusters and between clusters, and at different temperature scales. It is shown by exactly solving the hamiltonian spectrum that collective spins are formed on each cl...
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ژورنال
عنوان ژورنال: Quarterly Reviews of Biophysics
سال: 2014
ISSN: 0033-5835,1469-8994
DOI: 10.1017/s0033583514000092