منابع مشابه
Surface phase transitions induced by electron mediated adatom-adatom interaction.
We propose that the indirect adatom-adatom interaction mediated by the conduction electrons of a metallic surface is responsible for the sqrt[3]xsqrt[3]<==>3x3 structural phase transitions observed in Sn/Ge (111) and Pb/Ge (111). When the indirect interaction overwhelms the local stress field imposed by the substrate registry, the system suffers a phonon instability, resulting in a structural p...
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QCD instantons generate non-perturbative spinand flavordependent forces between quarks. We review the results of a series of studies on the role played by instanton-induced correlations in hadrons. We first present a study of instanton-mediated interactions in QCD, based on lattice simulations. Then we show that the Instanton Liquid Model can reproduce the available data on proton and pion form...
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Increasing experimental evidence is building which indicates that signatures of strong correlations are present in the Na-rich region of NaxCoO2 (i.e., x 0:7) and absent in the Na-poor region (i.e., x 0:3). This is unexpected, given that NaCoO2 is a band insulator and CoO2 has an integer-filled open shell, making it a candidate for strong correlations. We explain these experimental observations...
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ژورنال
عنوان ژورنال: Surface Science
سال: 2012
ISSN: 0039-6028
DOI: 10.1016/j.susc.2012.07.032