Magnetotransport signatures of antiferromagnetism coexisting with charge order in the trilayer cuprate HgBa<sub>2</sub>Ca<sub>2</sub>Cu<sub>3</sub>O<sub>8+δ</sub>.
basic_science · Level V
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- Record sourced from PubMed, PMID 35322017.
- Also identified by DOI 10.1038/s41467-022-29134-6 and PMC identifier 8943046.
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Abstract
Multilayered cuprates possess not only the highest superconducting temperature transition but also offer a unique platform to study disorder-free CuO<sub>2</sub> planes and the interplay between competing orders with superconductivity. Here, we study the underdoped trilayer cuprate HgBa<sub>2</sub>Ca<sub>2</sub>Cu<sub>3</sub>O<sub>8+δ</sub> and we report quantum oscillation and Hall effect measurements in magnetic field up to 88 T. A careful analysis of the complex spectra of quantum oscillations strongly supports the coexistence of an antiferromagnetic order in the inner plane and a charge order in the outer planes. The presence of an ordered antiferromagnetic metallic state that extends deep in the superconducting phase is a key ingredient that supports magnetically mediated pairing interaction in cuprates.