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Checkerboards, stripes and corner energies in spin models with competing interactions
Checkerboards stripes corner energies spin models competing interactions
2011/7/27
Checkerboards, stripes and corner energies in spin models with competing interactions.
Spin canting as a result of the competition between stripes and spirals in cuprates
Spin canting spirals in cuprates
2010/11/24
Based on the extended Hubbard model we calculate the energy of stripe and spiral ground states.
We find that uniform spirals get favored by a large t′/t ratio but are unstable at small doping towards...
Let Σ=Σ_{i=1}^{t}(n_i-1) and Λ=Σ_{j=1}^s(m_j-1). This paper considers the generalized Ramsey number R(K_{1,n_1},…, K_{1,n_t},m_1K_2,…, m_sK_2) for any Σ and Λ. And the authors get their exact values i...
May 18, 2007，New research suggests that the water plumes seen on Enceladus may not require the presence of liquid water near the moon’s surface. However the moon may harbor a liquid ocean deep below i...
5 February 2007，Confining and controlling electrons onto metal surfaces is an awkward task, and currently researchers do this by carefully positioning single atoms using techniques such as scanning el...