746 research outputs found
Local Antiferromagnetic Correlations and Pairing
The high cuprate superconductors doped near half-filling have short
range antiferromagnetic correlations. Here we describe an intuitive local
picture of why, if pairing occurs in the presence of short-range
antiferromagnetic correlations, the orbital state will have
symmetry.Comment: 8 pages and one figur
Solution of the Holstein polaron anisotropy problem
We study Holstein polarons in three-dimensional anisotropic materials. Using
a variational exact diagonalization technique we provide highly accurate
results for the polaron mass and polaron radius. With these data we discuss the
differences between polaron formation in dimension one and three, and at small
and large phonon frequency. Varying the anisotropy we demonstrate how a polaron
evolves from a one-dimensional to a three-dimensional quasiparticle. We thereby
resolve the issue of polaron stability in quasi-one-dimensional substances and
clarify to what extent such polarons can be described as one-dimensional
objects. We finally show that even the local Holstein interaction leads to an
enhancement of anisotropy in charge carrier motion.Comment: 6 pages, 7 figures; extended version accepted for publication in
Phys. Rev.
Understanding business valuation : a practical guide to valuing small to medium-sized businesses
https://egrove.olemiss.edu/aicpa_guides/1592/thumbnail.jp
Understanding business valuation : a practical guide to valuing small to medium-sized businesses
https://egrove.olemiss.edu/aicpa_guides/2736/thumbnail.jp
CPA\u27s guide to valuing a closely held business; Small business consulting; Consulting services practice aid 93-3
https://egrove.olemiss.edu/aicpa_guides/1595/thumbnail.jp
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