Layered antiferromagnetic spin structures of expanded face-centered- tetragonal Mn(001) as an origin of exchange bias coupling to the magnetic Co layer

Pin Jui Hsu, Chun I. Lu, Yu Hsun Chu, Bo Yao Wang, Chii Bin Wu, Lun Jia Chen, Sheng Syun Wong, Minn Tsong Lin

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Spin structures of an exchange-coupled-bilayer system of expanded-face-centered-tetragonal (e-fct) Mn(001) ultrathin films grown on Co/Cu(001) were resolved by means of spin-polarized scanning-tunneling microscopy. With an in-plane spin-sensitive probe, a layered antiferromagnetic-spin ordering of Mn overlayers was evidenced directly. In addition, the spin frustration across the same Mn layer creating a narrow domain wall down to nanometer scale was also observed along the buried step of Co underlayers. According to the micromagnetic simulation, the step-induced domain-wall width is in agreement with the experimental results. Such in-plane layered antiferromagnetic-spin structures of e-fct Mn(001) provide uncompensated spins at the interface with Co underlayers and elucidate the mechanism of the corresponding exchange-bias field observed in the previous studies.

Original languageEnglish
Article number174434
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume85
Issue number17
DOIs
Publication statusPublished - 2012 May 29

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Domain walls
Ultrathin films
Scanning tunneling microscopy
domain wall
frustration
scanning tunneling microscopy
probes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

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title = "Layered antiferromagnetic spin structures of expanded face-centered- tetragonal Mn(001) as an origin of exchange bias coupling to the magnetic Co layer",
abstract = "Spin structures of an exchange-coupled-bilayer system of expanded-face-centered-tetragonal (e-fct) Mn(001) ultrathin films grown on Co/Cu(001) were resolved by means of spin-polarized scanning-tunneling microscopy. With an in-plane spin-sensitive probe, a layered antiferromagnetic-spin ordering of Mn overlayers was evidenced directly. In addition, the spin frustration across the same Mn layer creating a narrow domain wall down to nanometer scale was also observed along the buried step of Co underlayers. According to the micromagnetic simulation, the step-induced domain-wall width is in agreement with the experimental results. Such in-plane layered antiferromagnetic-spin structures of e-fct Mn(001) provide uncompensated spins at the interface with Co underlayers and elucidate the mechanism of the corresponding exchange-bias field observed in the previous studies.",
author = "Hsu, {Pin Jui} and Lu, {Chun I.} and Chu, {Yu Hsun} and Wang, {Bo Yao} and Wu, {Chii Bin} and Chen, {Lun Jia} and Wong, {Sheng Syun} and Lin, {Minn Tsong}",
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doi = "10.1103/PhysRevB.85.174434",
language = "English",
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journal = "Physical Review B-Condensed Matter",
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publisher = "American Physical Society",
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Layered antiferromagnetic spin structures of expanded face-centered- tetragonal Mn(001) as an origin of exchange bias coupling to the magnetic Co layer. / Hsu, Pin Jui; Lu, Chun I.; Chu, Yu Hsun; Wang, Bo Yao; Wu, Chii Bin; Chen, Lun Jia; Wong, Sheng Syun; Lin, Minn Tsong.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 85, No. 17, 174434, 29.05.2012.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Layered antiferromagnetic spin structures of expanded face-centered- tetragonal Mn(001) as an origin of exchange bias coupling to the magnetic Co layer

AU - Hsu, Pin Jui

AU - Lu, Chun I.

AU - Chu, Yu Hsun

AU - Wang, Bo Yao

AU - Wu, Chii Bin

AU - Chen, Lun Jia

AU - Wong, Sheng Syun

AU - Lin, Minn Tsong

PY - 2012/5/29

Y1 - 2012/5/29

N2 - Spin structures of an exchange-coupled-bilayer system of expanded-face-centered-tetragonal (e-fct) Mn(001) ultrathin films grown on Co/Cu(001) were resolved by means of spin-polarized scanning-tunneling microscopy. With an in-plane spin-sensitive probe, a layered antiferromagnetic-spin ordering of Mn overlayers was evidenced directly. In addition, the spin frustration across the same Mn layer creating a narrow domain wall down to nanometer scale was also observed along the buried step of Co underlayers. According to the micromagnetic simulation, the step-induced domain-wall width is in agreement with the experimental results. Such in-plane layered antiferromagnetic-spin structures of e-fct Mn(001) provide uncompensated spins at the interface with Co underlayers and elucidate the mechanism of the corresponding exchange-bias field observed in the previous studies.

AB - Spin structures of an exchange-coupled-bilayer system of expanded-face-centered-tetragonal (e-fct) Mn(001) ultrathin films grown on Co/Cu(001) were resolved by means of spin-polarized scanning-tunneling microscopy. With an in-plane spin-sensitive probe, a layered antiferromagnetic-spin ordering of Mn overlayers was evidenced directly. In addition, the spin frustration across the same Mn layer creating a narrow domain wall down to nanometer scale was also observed along the buried step of Co underlayers. According to the micromagnetic simulation, the step-induced domain-wall width is in agreement with the experimental results. Such in-plane layered antiferromagnetic-spin structures of e-fct Mn(001) provide uncompensated spins at the interface with Co underlayers and elucidate the mechanism of the corresponding exchange-bias field observed in the previous studies.

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