A Caltech Library Service

Direct visualization and control of antiferromagnetic domains and spin reorientation in a parent cuprate

Seyler, K. L. and Ron, A. and Van Beveren, D. and Rotundu, C. R. and Lee, Y. S. and Hsieh, D. (2022) Direct visualization and control of antiferromagnetic domains and spin reorientation in a parent cuprate. Physical Review B, 106 (14). Art. No. L140403. ISSN 2469-9950. doi:10.1103/physrevb.106.l140403.

Full text is not posted in this repository. Consult Related URLs below.

Use this Persistent URL to link to this item:


We report magnetic optical second-harmonic generation (SHG) polarimetry and imaging on Sr₂Cu₃O₄Cl₂, which allows direct visualization of the mesoscopic antiferromagnetic (AFM) structure of a parent cuprate. Temperature- and magnetic-field-dependent SHG reveals large domains with 90° relative orientations that are stabilized by a combination of uniaxial magnetic anisotropy and the Earth's magnetic field. Below a temperature T_R ∼ 97 K, we observe an unusual 90° spin-reorientation transition, possibly driven by competing magnetic anisotropies of the two copper sublattices, which swaps the AFM domain states while preserving the domain structure. This allows deterministic switching of the AFM states by thermal or laser heating. Near T_R, the domain walls become exceptionally responsive to an applied magnetic field, with the Earth's field sufficient to completely expel them from the crystal. Our findings unlock opportunities to study the mesoscopic AFM behavior of parent cuprates and explore their potential for AFM technologies.

Item Type:Article
Related URLs:
URLURL TypeDescription
Seyler, K. L.0000-0003-1553-4518
Ron, A.0000-0002-1840-7824
Rotundu, C. R.0000-0002-1571-8352
Hsieh, D.0000-0002-0812-955X
Additional Information:We acknowledge helpful conversations with D. Silevitch and P. Lee. The SHG measurements were supported by an ARO PECASE Award No. W911NF-17-1-0204. D.H. also acknowledges support for instrumentation from the David and Lucile Packard Foundation and from the Institute for Quantum Information and Matter (IQIM), an NSF Physics Frontiers Center (Grant No. PHY-1733907). K.L.S. acknowledges a Caltech Prize Postdoctoral Fellowship. A.R thanks the Zuckerman Foundation, and the Israel Science Foundation (Grant No. 1017/20). The work at Stanford and SLAC (crystal growth and sample characterization) was supported by the U.S. Department of Energy (DOE), Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division, under Contract No. DE-AC02-76SF00515.
Group:Institute for Quantum Information and Matter
Funding AgencyGrant Number
Army Research Office (ARO)W911NF-17-1-0204
David and Lucile Packard FoundationUNSPECIFIED
Israel Science Foundation1017/20
Department of Energy (DOE)DE-AC02-76SF00515
Institute for Quantum Information and Matter (IQIM)UNSPECIFIED
Caltech Prize FellowshipUNSPECIFIED
Mortimer B. Zuckerman STEM Leadership ProgramUNSPECIFIED
Issue or Number:14
Record Number:CaltechAUTHORS:20221104-609510400.4
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:117712
Deposited By: Research Services Depository
Deposited On:17 Nov 2022 19:56
Last Modified:17 Nov 2022 19:56

Repository Staff Only: item control page