Computational quantum magnetism: Role of noncollinear magnetism

Arthur J Freeman, Kohji Nakamura

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We are witnessing today a golden age of innovation with novel magnetic materials and with discoveries important for both basic science and device applications. Computation and simulation have played a key role in the dramatic advances of the past and those we are witnessing today. A goal-driving computational science-simulations of every-increasing complexity of more and more realistic models has been brought into greater focus with greater computing power to run sophisticated and powerful software codes like our highly precise full-potential linearized augmented plane wave (FLAPW) method. Indeed, significant progress has been achieved from advanced first-principles FLAPW calculations for the predictions of surface/interface magnetism. One recently resolved challenging issue is the role of noncollinear magnetism (NCM) that arises not only through the SOC, but also from the breaking of symmetry at surfaces and interfaces. For this, we will further review some specific advances we are witnessing today, including complex magnetic phenomena from noncollinear magnetism with no shape approximation for the magnetization (perpendicular MCA in transition-metal overlayers and superlattices; unidirectional anisotropy and exchange bias in FM and AFM bilayers; constricted domain walls important in quantum spin interfaces; and curling magnetic nano-scale dots as new candidates for non-volatile memory applications) and most recently providing new predictions and understanding of magnetism in novel materials such as magnetic semiconductors and multi-ferroic systems.

Original languageEnglish
Pages (from-to)894-898
Number of pages5
JournalJournal of Magnetism and Magnetic Materials
Volume321
Issue number7
DOIs
Publication statusPublished - Apr 2009

Fingerprint

Magnetism
plane waves
predictions
magnetic materials
Magnetic semiconductors
frequency modulation
domain wall
superlattices
Magnetic materials
Domain walls
Superlattices
simulation
transition metals
atomic force microscopy
Transition metals
computer programs
Magnetization
magnetization
anisotropy
Anisotropy

Keywords

  • Domain wall
  • Magnetic vortex
  • Noncolliner magnetism

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Computational quantum magnetism : Role of noncollinear magnetism. / Freeman, Arthur J; Nakamura, Kohji.

In: Journal of Magnetism and Magnetic Materials, Vol. 321, No. 7, 04.2009, p. 894-898.

Research output: Contribution to journalArticle

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