skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Extreme asymmetry of Néel domain walls in multilayered films of the dilute magnetic semiconductor (Ga,Mn)(As,P)

Journal Article · · Physical Review B
 [1];  [1];  [2];  [2];  [2];  [2]
  1. Argonne National Lab. (ANL), Argonne, IL (United States)
  2. Univ. of Notre Dame, Notre Dame, IN (United States)

Here, we report on unconventional perfectly shaped, fully asymmetric ~90° Néel domain walls in multilayered films of the diluted ferromagnetic semiconductor (Ga,Mn)(As,P) with a stepwise variation of P doping. Our results contradict micromagnetic calculations, which favor symmetric domain walls due to crystallographic anisotropy and stray field energy. We demonstrate that both the puzzling uniaxial in-plane anisotropy in the tetragonal multilayered film and the asymmetry of the domain walls could result from Dzyaloshinskii-Moriya interactions that are enhanced by the multiple sharp interfaces between the layers and from anisotropic nonrelativistic exchange coupling. Our finding shows that digital variations of composition during the molecular beam epitaxy can be used to tune the anisotropy and chirality of magnetic multilayers.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; National Science Foundation (NSF); USDOE
Grant/Contract Number:
AC02-06CH11357; DMR14-00432
OSTI ID:
1488404
Alternate ID(s):
OSTI ID: 1483915
Journal Information:
Physical Review B, Vol. 98, Issue 18; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 6 works
Citation information provided by
Web of Science

References (56)

Uniaxial in-plane magnetic anisotropy of Ga1−xMnxAs journal July 2004
Influence of Dzialoshinskii–Moriya interaction on static and dynamic properties of a transverse domain wall journal October 2014
Anisotropic exchange coupling in diluted magnetic semiconductors: Ab initio spin-density functional theory journal January 2009
A thermodynamic theory of “weak” ferromagnetism of antiferromagnetics journal January 1958
Spin-wave resonance as a tool for probing surface anisotropies in ferromagnetic thin films: Application to the study of (Ga,Mn)As journal October 2017
Theory of spin waves in ferromagnetic (Ga,Mn)As journal August 2010
Surface morphology and magnetic anisotropy in (Ga,Mn)As journal April 2011
Influence of the different strains’ components on the uniaxial magnetic anisotropy parameters for a (Ga,Mn)As bulk system: A first-principles study journal June 2017
Interface-induced phenomena in magnetism journal June 2017
Domain Wall Orientation in Magnetic Nanowires journal February 2004
Magnetic Domain Structure and Magnetic Anisotropy in G a 1 x M n x A s journal April 2003
Comparison of micromagnetic parameters of the ferromagnetic semiconductors (Ga,Mn)(As,P) and (Ga,Mn)As journal October 2014
Domain-wall profiles in Co / Ir n /Pt(111) ultrathin films: Influence of the Dzyaloshinskii-Moriya interaction journal December 2016
Magnetic microscopy and topological stability of homochiral Néel domain walls in a Pt/Co/AlOx trilayer journal December 2015
Ultrahigh vacuum magnetic force microscopy on in situ grown iron thin films journal March 1998
Diluted magnetic semiconductors journal August 1988
Experimental investigation of the magnetic structure of domain walls in thin ferromagnetic films journal October 2009
Magnetic domain structure in ultrathin cobalt films journal February 1991
Origin of Bulk Uniaxial Anisotropy in Zinc-Blende Dilute Magnetic Semiconductors journal June 2012
Structure and magnetism of single-phase epitaxial γ Fe 4 N journal April 2004
Femtosecond Coherent Control of Spins in (Ga,Mn)As Ferromagnetic Semiconductors Using Light journal July 2009
Domain Walls in the ( Ga , Mn ) As Diluted Magnetic Semiconductor journal January 2008
Effect of picosecond strain pulses on thin layers of the ferromagnetic semiconductor (Ga,Mn)(As,P) journal September 2010
The influence of phosphorus content on magnetic anisotropy in ferromagnetic (Ga, Mn) (As, P)/GaAs thin films journal July 2013
Ferromagnetic resonance and spin-wave resonances in GaMnAsP films journal May 2018
Adjustable anisotropy in ferromagnetic (Ga,Mn) (As,P) layered alloys journal January 2010
Anatomy of Dzyaloshinskii-Moriya Interaction at Co / Pt Interfaces journal December 2015
Antiskyrmions stabilized at interfaces by anisotropic Dzyaloshinskii-Moriya interactions journal August 2017
Magnetic switching and in‐plane uniaxial anisotropy in ultrathin Ag/Fe/Ag(100) epitaxial films journal December 1995
Theory of ferromagnetic (III,Mn)V semiconductors journal August 2006
Dynamics of Dzyaloshinskii domain walls in ultrathin magnetic films journal December 2012
Spin-dependent phenomena and device concepts explored in (Ga,Mn)As journal July 2014
Theory of the Dzyaloshinskii domain-wall tilt in ferromagnetic nanostrips journal October 2017
Fast current-induced motion of a transverse domain wall induced by interfacial Dzyaloshinskii–Moriya interaction journal October 2015
Dependence of ferromagnetic properties on phosphorus concentration in Ga 1- x Mn x As 1- y P y
  • Li, Xiang; Liu, Xinyu; Dong, Sining
  • Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phenomena, Vol. 36, Issue 2 https://doi.org/10.1116/1.5014055
journal March 2018
Angular dependence of spin-wave resonances and surface spin pinning in ferromagnetic (Ga,Mn) As films journal May 2007
First-principles theory of dilute magnetic semiconductors journal May 2010
RKKY interaction induced by two-dimensional hole gases journal August 2013
Anisotropic exchange interactions in III-V diluted magnetic semiconductors journal April 2005
Temperature-dependent Néel wall dynamics in GaMnAs/GaAs journal September 2010
Exchange interactions in III-V and group-IV diluted magnetic semiconductors journal March 2004
Anisotropic Superexchange Interaction and Weak Ferromagnetism journal October 1960
Anisotropic Dzyaloshinskii-Moriya interaction in ultrathin epitaxial Au/Co/W(110) journal June 2017
Oxide-diluted magnetic semiconductors: a review of the experimental status journal September 2003
Dilute ferromagnetic semiconductors: Physics and spintronic structures journal March 2014
Microscopic magnetization reversal processes and magnetic domain structure in epitaxial Fe/GaAs(001) films journal February 1995
High-resolution observations of temperature-dependent magnetic domain structures within Ga x Mn 1 x As by Lorentz microscopy journal June 2007
Spin-orbit coupling effect in (Ga,Mn)As films: Anisotropic exchange interactions and magnetocrystalline anisotropy journal November 2011
Antiskyrmions stabilized at interfaces by anisotropic Dzyaloshinskii-Moriya interactions text January 2017
Spin-orbit coupling effect in (Ga,Mn)As films: Anisotropic exchange interactions and magnetocrystalline anisotropy text January 2011
Surface morphology and magnetic anisotropy in (Ga,Mn)As text January 2010
Origin of bulk uniaxial anisotropy in zinc-blende dilute magnetic semiconductors text January 2012
Dynamics of Dzyaloshinskii domain walls in ultrathin magnetic films text January 2012
Anatomy of Dzyaloshinskii-Moriya Interaction at Co/Pt Interfaces text January 2015
Anisotropic Dzyaloshinskii-Moriya Interaction in ultra-thin epitaxial Au/Co/W(110) text January 2017
Theory of ferromagnetic (III,Mn)V semiconductors text January 2006

Cited By (1)

Programmable bias field observed in graded ferromagnetic semiconductor films with broken symmetry journal July 2019