Comparison of temperature and doping dependence of elastoresistivity near a putative nematic quantum critical point.

ABSTRACT: Strong electronic nematic fluctuations have been discovered near optimal doping for several families of Fe-based superconductors, motivating the search for a possible link between these fluctuations, nematic quantum criticality, and high temperature superconductivity. Here we probe a key prediction of quantum criticality, namely power-law dependence of the associated nematic susceptibility as a function of composition and temperature approaching the compositionally tuned putative quantum critical point. To probe the 'bare' quantum critical point requires suppression of the superconducting state, which we achieve by using large magnetic fields, up to 45 T, while performing elastoresistivity measurements to follow the nematic susceptibility. We performed these measurements for the prototypic

SUBMITTER: Palmstrom JC 

PROVIDER: S-EPMC8866430 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature