Study about Diatomic Chain with a Mass Impurity

The recurrence relations approach is used to investigate how an impurity influences a harmonic oscillator chain. A standard diatomic chain with one mass impurity is analysed. Two pairs of resonant poles and three branch cuts provide the impurity’s momentum Autocor- relation function. The pole contribution is provided by cosine(s), whereas the cut contribution is provided…
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June 22, 2022 0