Search Menu
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information
Search Scholarly Publications

Title: Magnetic structure and magnetization of z -axis helical Heisenberg antiferromagnets with XY anisotropy in high magnetic fields transverse to the helix axis at zero temperature

Abstract

A helix has a wave vector along the z axis with the magnetic moments ferromagnetically aligned within xy planes with a turn angle kd between the moments in adjacent planes in transverse field H = Hx$$\hat{i}$$ = 0. Here, the magnetic structure and x-axis average magnetization per spin of this system in a classical XY anisotropy field HA is studied versus kd, HA, and large Hx at zero temperature. For values of HA below a kd-dependent maximum value, the xy helix phase transitions with increasing Hx into a spin-flop (SF) phase where the ordered moments have x, y, and z components. The moments in the SF phase are taken to be distributed on either one or two xyz spherical ellipses. The minor axes of the ellipses are oriented along the z axis and the major axes along the y axis where the ellipses are flattened along the z axis due to the presence of the XY anisotropy. From energy minimization of the SF spherical ellipse parameters for given values of kd, HA, and Hx, four kd-dependent SF phases are found: either one or two xyz spherical ellipses and either one or two xy fans, in addition to the xy helix/fan phase and the paramagnetic (PM) phase with all moments aligned along H. The PM phase occurs via second-order transitions from the xy fan and SF phases with increasing Hx. Phase diagrams in the Hx - HA plane are constructed by energy minimization with respect to the SF phases, the xy helix/fan phase, and the xy SF fan phase for five kd values. Lastly, one of these five phase diagrams is compared with the magnetic properties found experimentally for the model helical Heisenberg antiferromagnet EuCo2P2 and semiquantitative agreement is found.

Authors:
 [1]
+ Show Author Affiliations
  1. Ames Lab. and Iowa State Univ., Ames, IA (United States)
Publication Date:
Research Org.:
Ames Lab., Ames, IA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; USDOE
OSTI Identifier:
1529593
Alternate Identifier(s):
OSTI ID: 1546280
Report Number(s):
IS-J-9962
Journal ID: ISSN 2469-9950; PRBMDO
Grant/Contract Number:  
AC02-07CH11358
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 99; Journal Issue: 21; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Johnston, David C. Magnetic structure and magnetization of z -axis helical Heisenberg antiferromagnets with XY anisotropy in high magnetic fields transverse to the helix axis at zero temperature. United States: N. p., 2019. Web. doi:10.1103/PhysRevB.99.214438.
Copy to clipboard
Johnston, David C. Magnetic structure and magnetization of z -axis helical Heisenberg antiferromagnets with XY anisotropy in high magnetic fields transverse to the helix axis at zero temperature. United States. https://doi.org/10.1103/PhysRevB.99.214438
Copy to clipboard
Johnston, David C. Wed . "Magnetic structure and magnetization of z -axis helical Heisenberg antiferromagnets with XY anisotropy in high magnetic fields transverse to the helix axis at zero temperature". United States. https://doi.org/10.1103/PhysRevB.99.214438. https://www.osti.gov/servlets/purl/1529593.
Copy to clipboard
@article{osti_1529593,
title = {Magnetic structure and magnetization of z -axis helical Heisenberg antiferromagnets with XY anisotropy in high magnetic fields transverse to the helix axis at zero temperature},
author = {Johnston, David C.},
abstractNote = {A helix has a wave vector along the z axis with the magnetic moments ferromagnetically aligned within xy planes with a turn angle kd between the moments in adjacent planes in transverse field H = Hx$\hat{i}$ = 0. Here, the magnetic structure and x-axis average magnetization per spin of this system in a classical XY anisotropy field HA is studied versus kd, HA, and large Hx at zero temperature. For values of HA below a kd-dependent maximum value, the xy helix phase transitions with increasing Hx into a spin-flop (SF) phase where the ordered moments have x, y, and z components. The moments in the SF phase are taken to be distributed on either one or two xyz spherical ellipses. The minor axes of the ellipses are oriented along the z axis and the major axes along the y axis where the ellipses are flattened along the z axis due to the presence of the XY anisotropy. From energy minimization of the SF spherical ellipse parameters for given values of kd, HA, and Hx, four kd-dependent SF phases are found: either one or two xyz spherical ellipses and either one or two xy fans, in addition to the xy helix/fan phase and the paramagnetic (PM) phase with all moments aligned along H. The PM phase occurs via second-order transitions from the xy fan and SF phases with increasing Hx. Phase diagrams in the Hx - HA plane are constructed by energy minimization with respect to the SF phases, the xy helix/fan phase, and the xy SF fan phase for five kd values. Lastly, one of these five phase diagrams is compared with the magnetic properties found experimentally for the model helical Heisenberg antiferromagnet EuCo2P2 and semiquantitative agreement is found.},
doi = {10.1103/PhysRevB.99.214438},
journal = {Physical Review B},
number = 21,
volume = 99,
place = {United States},
year = {2019},
month = {6}
}
Copy to clipboard
Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1103/PhysRevB.99.214438
Copyright Statement
Other availability
Search WorldCat Search WorldCat to find libraries that may hold this journal
Citation Metrics:
Cited by: 5 works
Citation information provided by
Web of Science
Save / Share:
Export Metadata
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.

Works referenced in this record:

Magnetic Susceptibility of Collinear and Noncollinear Heisenberg Antiferromagnets
journal, August 2012

Unified molecular field theory for collinear and noncollinear Heisenberg antiferromagnets
journal, February 2015

Magnetic dipole interactions in crystals
journal, January 2016

A New Type of Antiferromagnetic Structure in the Rutile Type Crystal
journal, June 1959

  • Yoshimori, Akio
  • Journal of the Physical Society of Japan, Vol. 14, Issue 6
  • DOI: 10.1143/JPSJ.14.807

Étude de l'antiferromagnétisme helicoidal de MnAu2 par diffraction de neutrons
journal, January 1961

A Neutron diffraction study of the magnetic structure of EuCo2P2
journal, May 1992

Thermodynamic transport theory of spin waves in ferromagnetic insulators
journal, October 2016

A Transition from Localized to Strongly Correlated Electron Behavior and Mixed Valence Driven by Physical or Chemical Pressure in ACo 2 As 2 (A = Eu and Ca)
journal, February 2016

  • Tan, Xiaoyan; Fabbris, Gilberto; Haskel, Daniel
  • Journal of the American Chemical Society, Vol. 138, Issue 8
  • DOI: 10.1021/jacs.5b12659

Enhanced moments of Eu in single crystals of the metallic helical antiferromagnet EuCo 2 − y As 2
journal, April 2018

Magnetization Process of a Screw Spin System
journal, June 1962

  • Nagamiya, Takeo; Nagata, Kazukiyo; Kitano, Yoshiharu
  • Progress of Theoretical Physics, Vol. 27, Issue 6
  • DOI: 10.1143/PTP.27.1253

Magnetization Process of a Screw Spin System. II
journal, January 1964

  • Kitano, Yoshiharu; Nagamiya, Takeo
  • Progress of Theoretical Physics, Vol. 31, Issue 1
  • DOI: 10.1143/PTP.31.1

Behavior of Helical Spin Structures in Applied Magnetic Fields
journal, October 1970

Magnetic Dipole Interactions in Crystals
text, January 2015

Enhanced moments of Eu in single crystals of the metallic helical antiferromagnet EuCo{2-y}As2
text, January 2018

    Sort by:
    [ × clear filter / sort ]

    Works referencing / citing this record:

    Antiferromagnetic stacking of ferromagnetic layers and doping-controlled phase competition in Ca 1 − x Sr x Co 2 − y As 2
    journal, July 2019

    Helical antiferromagnetic ordering in EuNi 1.95 As 2 single crystals
    journal, September 2019

      Sort by:
      [ × clear filter / sort ]

      Similar Records in DOE PAGES and OSTI.GOV collections: