Abstract
Nematicity is ubiquitous in electronic phases of high-Tc superconductors, particularly in the Fe-based systems. While several experiments have probed nematic fluctuations, they have been restricted to uniform or momentum-averaged fluctuations. Here, we investigate the behavior of finite-momentum nematic fluctuations by utilizing the anomalous softening of acoustic phonon modes in optimally doped Ba(Fe0.94Co0.06)2As2. We determine the nematic correlation length and find that it sharply changes its T dependence at Tc, revealing a strong connection between nematicity and superconductivity.
Original language | English (US) |
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Article number | 014516 |
Journal | Physical Review B |
Volume | 98 |
Issue number | 1 |
DOIs | |
State | Published - Jul 24 2018 |
Bibliographical note
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