A classification of spin frustration in molecular magnets from a physical study of large odd-numbered-metal, odd electron rings
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چکیده
منابع مشابه
A classification of spin frustration in molecular magnets from a physical study of large odd-numbered-metal, odd electron rings.
The term "frustration" in the context of magnetism was originally used by P. W. Anderson and quickly adopted for application to the description of spin glasses and later to very special lattice types, such as the kagomé. The original use of the term was to describe systems with competing antiferromagnetic interactions and is important in current condensed matter physics in areas such as the des...
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The spin dynamics of Cr8 Mn, a nine-membered antiferromagnetic (AF) molecular nanomagnet, are investigated. Cr8 Mn is a rare example of a large odd-membered AF ring, and has an odd-number of 3d-electrons present. Odd-membered AF rings are unusual and of interest due to the presence of competing exchange interactions that result in frustrated-spin ground states. The chemical synthesis and struct...
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We present our results of an accurate and detailed study of the structural and transport properties of the recently proposed Haeckelite carbon nanotubes HCNs using the generalized tight-binding molecular dynamics scheme. The quantum conductance and the current vs voltage I-V curves for the HCNs were calculated using two independent methods: i an embedded form of the surface Green’s function mat...
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which are just module axioms (MM2) and (MM3). [In the case of the second axiom, we have to show that (r1r2)θ = (r1θ)r2. We are thinking of r′ as an element of the free R-module R, and r2 as an element of the ring R acting on this module.] The kernel of θ is {r ∈ R : mr = 0}. Clearly any element r ∈ Ann(M) satisfies this condition. Conversely, since m generates M, every element of M has the form...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 2012
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.1213127109