Evidence of Absence of Loop-Current Order in La2?xSrxCuO4 from μSR Measurements

10th International Conference on Materials and Mechanisms of Superconductivity

Sonier, J.E.^1,2 ; Huang, W.^3 ; Pacradouni, V.^4 ; Kennett, M.P.^1 ; Komiya, S.^5

Department of Physics, Simon Fraser University, Burnaby BC V5A 1S6, Canada^1

Canadian Institute for Advanced Research, Toronto, ON M5G 1Z8, Canada^2

Department of Physics and Astronomy, McMaster University, Hamilton, ON L8S 4M1, Canada^3

Powertech Labs Inc., Surrey, BC V3W 7R7, Canada^4

Central Research Institute of Electric Power Industry, Kanagawa 240-0196, Yokosuka, Japan^5

关键词: High-precision searches;    La2-xSrxCuO4;    Loop current;    Magnetic orders;    Muon spin relaxation;    Ordered state;    Positive muons;    Zero fields;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/449/1/012013/pdf
DOI  :  10.1088/1742-6596/449/1/012013

来源: IOP

【 摘 要 】

We discuss the results of a recent high precision search for orbital-like magnetic order in the pseudogap regime of La2-xSrxCuO4 single crystals using zero-field muon spin relaxation (ZF-μSR). No evidence of proposed loop-current ordered states or any other form of magnetic order is found. We explain why recent experiments refute the argument that this null result is due to the positive muon μ+locally destroying the loop-current order.