Institute for High Pressure Hanyang University

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Institute for High Pressure Hanyang University - Turning charge-density waves into Cooper pairs
Turning charge-density waves into Cooper pairs
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    The relationship between charge-density waves (CDWs) and superconductivity is a long-standing debate. Often observed as neighbors in phase diagrams, it is still unclear whether they cooperate, compete, or simply coexist. Using angleresolved photoemission spectroscopy, we demonstrate here that by tuning the energy position of the van Hove singularity in Pd-doped 2H-TaSe2, one is able to suppress CDW and enhance superconductivity by more than an order of magnitude. We argue that it is particular fermiology of the material that is responsible for each phenomenon, thus explaining their persistent proximity as phases. https://www.nature.com/articles/s41535-020-0225-5
 
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Turning charge-density waves into Cooper pairs 2020.06.22 102 
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