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  Magnetoentropic Signatures of the Textured Metamagnetic Phase of an Antiferromagnetic Polar Metal: Ca3Ru2O7

Kikugawa, N., Sokolov, D. A., Sow, C., Maeno, Y., & Mackenzie, A. P. (2021). Magnetoentropic Signatures of the Textured Metamagnetic Phase of an Antiferromagnetic Polar Metal: Ca3Ru2O7. Journal of the Physical Society of Japan, 90(10): 103704, pp. 1-5. doi:10.7566/JPSJ.90.103704.

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 Creators:
Kikugawa, Naoki1, Author
Sokolov, Dmitry A.2, Author              
Sow, Chanchal1, Author
Maeno, Yoshiteru1, Author
Mackenzie, Andrew Peter3, Author              
Affiliations:
1External Organizations, ou_persistent22              
2Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              
3Andrew Mackenzie, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863463              

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 Abstract: We report the magnetocaloric effect of a bilayered perovskite ruthenate Ca3Ru2O7 that has recently been recognized as an antiferromagnetic polar metal. The magnetic entropy change obtained from temperature dependence of the DC magnetization measurements shows peaks and valleys under the magnetic field near metamagnetic transitions, and enable us to map out a thermodynamic field-temperature phase-diagram. The area surrounded by the boundaries agrees well with a novel "metamagnetic texture" with spin modulation observed recently by small angle neutron scattering measurements. We demonstrate that a thermodynamically equilibrium state is realized between the antiferromagnetic and spin-polarized states throughout the metamagnetic transition in this polar metal.

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Language(s): eng - English
 Dates: 2021-09-212021-09-21
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Type: -
 Identifiers: ISI: 000704344000007
DOI: 10.7566/JPSJ.90.103704
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Title: Journal of the Physical Society of Japan
Source Genre: Journal
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Publ. Info: Tokyo : The Society
Pages: - Volume / Issue: 90 (10) Sequence Number: 103704 Start / End Page: 1 - 5 Identifier: ISSN: 0031-9015
CoNE: https://pure.mpg.de/cone/journals/resource/954925433407