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Suppose that the conception of a triangle is given to a philosopher and that he is required to discover, by the philosophical method, what relation the sum of its angles bears to a right angle. 假设给一个哲学家,提供了一个三角形的概念,要求他通过哲学的方法,去发现三个角之和,与一个直角有什...
quantum size effectWe have examined the quantum size effect in anatase T iO 2 nanoparticles. No shift of the band gap energy has been observed for sizes 2 R≥1.5 nm. On the other hand, we have found unusual variation of the oscillator strength of the first allowed direct transition. The ...
the abundance of boron has been pointed out as a possible reason for MgB2’s superconductivity, considering both covalent B-B and ionic B-Mg bonding. It is important to note that these
The hardening of the spin excitations has been observed by INS for BaFe2(As0.7P0.3)226. At the zone boundary, INS observed a hardening of the spin excitations from 180 meV (x = 0) to 220 meV (x = 0.3) very similar to what is detected in our RIXS data (180 meV to...
Besides, the results show that the biaxial strain is an effective tool for adjusting the energy gap where the indirect energy gap under the strain effects ranged within a range of 0.33/0.34 eV at −8% to 0.361/0.464 eV at 6%. At −8% compressive strain, the interfacial charge transfer...
magnetic quantum number ml orientation of orbital -l, -l + 1... l-1, l spin quantum number s inherent angular momentum, or "spin" denote electron spin as either 1/2 (arrow up) or -1/2 (down arrow) The standard enthalpy of formation for MgO(s) is -601.6 kJ/mol. What specific ...
The plant genus Fallopia is well-known in Chinese traditional medicine and includes many species that contain bioactive compounds, namely phytoestrogens. Consumption of phytoestrogens may be linked to decreased incidence of breast and prostate cancers therefore discovery of novel phytoestrogens and novel sou...
In non-interacting systems, bands from non-trivial topology emerge strictly at half-filling and exhibit either the quantum anomalous Hall or spin Hall effects. Here we show using determinantal quantum Monte Carlo and an exactly solvable strongly interact
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