Magnetic field reveals vanishing Hall response in the normal state of stripe-ordered cuprates

Shi, Z., Baity, P. G. , Terzic, J., Pokharel, B. K., Sasagawa, T. and Popović, D. (2021) Magnetic field reveals vanishing Hall response in the normal state of stripe-ordered cuprates. Nature Communications, 12, 3724. (doi: 10.1038/s41467-021-24000-3) (PMID:34140487) (PMCID:PMC8211789)

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The origin of the weak insulating behavior of the resistivity, i.e. ρxx∝ln(1/T), revealed when magnetic fields (H) suppress superconductivity in underdoped cuprates has been a longtime mystery. Surprisingly, the high-field behavior of the resistivity observed recently in charge- and spin-stripe-ordered La-214 cuprates suggests a metallic, as opposed to insulating, high-field normal state. Here we report the vanishing of the Hall coefficient in this field-revealed normal state for all T<(2−6)Tc0, where Tc0 is the zero-field superconducting transition temperature. Our measurements demonstrate that this is a robust fundamental property of the normal state of cuprates with intertwined orders, exhibited in the previously unexplored regime of T and H. The behavior of the high-field Hall coefficient is fundamentally different from that in other cuprates such as YBa2Cu3O6+x and YBa2Cu4O8, and may imply an approximate particle-hole symmetry that is unique to stripe-ordered cuprates. Our results highlight the important role of the competing orders in determining the normal state of cuprates.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Baity, Dr Paul
Authors: Shi, Z., Baity, P. G., Terzic, J., Pokharel, B. K., Sasagawa, T., and Popović, D.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Nature Communications
Publisher:Nature Research
ISSN (Online):2041-1723
Copyright Holders:Copyright © 2021 The Authors
First Published:First published in Nature Communications 12: 3724
Publisher Policy:Reproduced under a Creative Commons License

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