Direct imaging of coexisting ordered and frustrated sublattices in artificial ferromagnetic quasicrystals

B. Farmer; V. S. Bhat; A. Balk; E. Teipel; N. Smith; J. Unguris; D. J. Keavney; J. T. Hastings; L. E. De Long

doi:10.1103/PhysRevB.93.134428

Direct imaging of coexisting ordered and frustrated sublattices in artificial ferromagnetic quasicrystals

B. Farmer, V. S. Bhat, A. Balk, E. Teipel, N. Smith, J. Unguris, D. J. Keavney, J. T. Hastings, L. E. De Long

Research output: Contribution to journal › Article › peer-review

29 Scopus citations

Abstract

We have used scanning electron microscopy with polarization analysis and photoemission electron microscopy to image the two-dimensional magnetization of permalloy films patterned into Penrose P2 tilings (P2T). The interplay of exchange interactions in asymmetrically coordinated vertices and short-range dipole interactions among connected film segments stabilize magnetically ordered, spatially distinct sublattices that coexist with frustrated sublattices at room temperature. Numerical simulations that include long-range dipole interactions between sublattices agree with images of as-grown P2T samples and predict a magnetically ordered ground state for a two-dimensional quasicrystal lattice of classical Ising spins.

Original language	English
Article number	134428
Journal	Physical Review B
Volume	93
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevB.93.134428
State	Published - Apr 25 2016

Bibliographical note

Publisher Copyright:
© 2016 American Physical Society.

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1103/PhysRevB.93.134428

Cite this

@article{da9d4c14afd5453596e2434fa94d68d9,

title = "Direct imaging of coexisting ordered and frustrated sublattices in artificial ferromagnetic quasicrystals",

abstract = "We have used scanning electron microscopy with polarization analysis and photoemission electron microscopy to image the two-dimensional magnetization of permalloy films patterned into Penrose P2 tilings (P2T). The interplay of exchange interactions in asymmetrically coordinated vertices and short-range dipole interactions among connected film segments stabilize magnetically ordered, spatially distinct sublattices that coexist with frustrated sublattices at room temperature. Numerical simulations that include long-range dipole interactions between sublattices agree with images of as-grown P2T samples and predict a magnetically ordered ground state for a two-dimensional quasicrystal lattice of classical Ising spins.",

author = "B. Farmer and Bhat, {V. S.} and A. Balk and E. Teipel and N. Smith and J. Unguris and Keavney, {D. J.} and Hastings, {J. T.} and {De Long}, {L. E.}",

note = "Publisher Copyright: {\textcopyright} 2016 American Physical Society.",

year = "2016",

month = apr,

day = "25",

doi = "10.1103/PhysRevB.93.134428",

language = "English",

volume = "93",

number = "13",

}

TY - JOUR

T1 - Direct imaging of coexisting ordered and frustrated sublattices in artificial ferromagnetic quasicrystals

AU - Farmer, B.

AU - Bhat, V. S.

AU - Balk, A.

AU - Teipel, E.

AU - Smith, N.

AU - Unguris, J.

AU - Keavney, D. J.

AU - Hastings, J. T.

AU - De Long, L. E.

PY - 2016/4/25

Y1 - 2016/4/25

N2 - We have used scanning electron microscopy with polarization analysis and photoemission electron microscopy to image the two-dimensional magnetization of permalloy films patterned into Penrose P2 tilings (P2T). The interplay of exchange interactions in asymmetrically coordinated vertices and short-range dipole interactions among connected film segments stabilize magnetically ordered, spatially distinct sublattices that coexist with frustrated sublattices at room temperature. Numerical simulations that include long-range dipole interactions between sublattices agree with images of as-grown P2T samples and predict a magnetically ordered ground state for a two-dimensional quasicrystal lattice of classical Ising spins.

AB - We have used scanning electron microscopy with polarization analysis and photoemission electron microscopy to image the two-dimensional magnetization of permalloy films patterned into Penrose P2 tilings (P2T). The interplay of exchange interactions in asymmetrically coordinated vertices and short-range dipole interactions among connected film segments stabilize magnetically ordered, spatially distinct sublattices that coexist with frustrated sublattices at room temperature. Numerical simulations that include long-range dipole interactions between sublattices agree with images of as-grown P2T samples and predict a magnetically ordered ground state for a two-dimensional quasicrystal lattice of classical Ising spins.

UR - http://www.scopus.com/inward/record.url?scp=84964800514&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84964800514&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.93.134428

DO - 10.1103/PhysRevB.93.134428

M3 - Article

AN - SCOPUS:84964800514

SN - 2469-9950

VL - 93

JO - Physical Review B

JF - Physical Review B

IS - 13

M1 - 134428

ER -

Direct imaging of coexisting ordered and frustrated sublattices in artificial ferromagnetic quasicrystals

Abstract

Bibliographical note

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this