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Creators/Authors contains: "Sapkota, Deepak"

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  1. ; ; ; ; ; ; ; ; ; (, Journal of Electronic Materials)
    Abstract The intersection of superconductivity and ferroelectricity hosts a wide range of exotic quantum phenomena. Here, we report on the observation of superconductivity in high-quality tin telluride films grown by molecular beam epitaxy. Unintentionally doped tin telluride undergoes a ferroelectric transition at ~100 K. The critical temperature of superconductivity increases monotonically with indium concentration. The critical field of superconductivity, however, does not follow the same behavior as critical temperature with indium concentration and exhibits a carrier-density-dependent violation of the Pauli limit. The electron–phonon coupling, according to the McMillan formula, exhibits a systematic enhancement with indium concentration, suggesting a potential violation of Bardeen–Cooper–Schrieffer (BCS) weak coupling at high indium concentrations. 
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  2. ; ; ; ; ; ; ; ; ; ; et al (, Physical Review B)
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