ELECTRONIC AND MAGNETIC STATES OF ULTRA-THIN Fe FILMS

From historical obscurity, antiferromagnets are recently enjoying revived interest, as antiferromagnetic (AFM) materials may allow the continued reduction in size of spintronic devices. They have the benefit of being insensitive to parasitic external magnetic fields, while displaying high read/write speeds, and thus poised to become an integral part of the next generation of logical devices and memory. They are currently employed to preserve the magnetoresistive qualities of some ferromagnetic based giant or tunnel magnetoresistance systems. However, the question remains how the magnetic states of an antiferromagnet can be efficiently manipulated and detected. Here, we reflect on AFM materials for their use in spintronics, in particular, newly recognized antiferromagnet Mn2Au with its in-plane anisotropy and tetragonal structure and high Néel temperature. These attributes make it one of the most promising candidates for AFM spintronics thus far with the possibility of architectures freed from the need for ferromagnetic (FM) elements. Here, we discuss its potential for use in ferromagnet-free spintronic devices.

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Quantum materials with strong spin-orbit coupling: challenges and opportunities for materials chemists

Journal of Materials Chemistry C ◽

10.1039/d1tc02070f ◽

2021 ◽

Author(s):

Alexander J. Browne ◽

Aleksandra Krajewska ◽

Alexandra Gibbs

Keyword(s):

Transition Metals ◽

Quantum Effect ◽

Orbit Coupling ◽

Spin Orbit Coupling ◽

Spin Orbit ◽

Challenges And Opportunities ◽

Quantum Materials ◽

Magnetic States ◽

Strong Spin

Spin-orbit coupling is a quantum effect that can give rise to exotic electronic and magnetic states in the compounds of the 4d and 5d transition metals. Exploratory synthesis, chemical tuning...

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Emerging 2D magnetic states in a graphene-based monolayer of EuC6

Nano Research ◽

10.1007/s12274-021-3494-9 ◽

2021 ◽

Author(s):

Ivan S. Sokolov ◽

Dmitry V. Averyanov ◽

Fabrice Wilhelm ◽

Andrei Rogalev ◽

Oleg E. Parfenov ◽

...

Keyword(s):

Magnetic States

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Effect of electron correlations on the formation of spiral magnetic states in the two-dimensional t-t′ Hubbard model

JETP Letters ◽

10.1134/s0021364013160054 ◽

2013 ◽

Vol 98 (3) ◽

pp. 150-155 ◽

Cited By ~ 15

Author(s):

P. A. Igoshev ◽

M. A. Timirgazin ◽

A. K. Arzhnikov ◽

V. Yu. Irkhin

Keyword(s):

Hubbard Model ◽

Two Dimensional ◽

Electron Correlations ◽

Magnetic States

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Theory of Localized Magnetic States in Metals

Journal of Applied Physics ◽

10.1063/1.1708389 ◽

1966 ◽

Vol 37 (3) ◽

pp. 1194-1194 ◽

Cited By ~ 9

Author(s):

P. W. Anderson

Keyword(s):

Magnetic States

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EFFECTS OF HOLE-DOPING AND DISORDER ON THE MAGNETIC STATES OF DELAFOSSITE CuCrO2 HAVING A SPIN-3/2 ANTIFERROMAGNETIC TRIANGULAR SUBLATTICE

International Journal of Modern Physics B ◽

10.1142/s0217979213300028 ◽

2013 ◽

Vol 27 (05) ◽

pp. 1330002 ◽

Cited By ~ 10

Author(s):

TETSUJI OKUDA ◽

RYOICHI KAJIMOTO ◽

MARIO OKAWA ◽

TOMOHIKO SAITOH

Keyword(s):

Physical Properties ◽

Hole Doping ◽

Spin Liquid ◽

Effects Of Disorder ◽

Magnetic States

In this review, we will discuss the effects of itinerant hole and disorder produced by substitutions on the magnetic states of polycrystalline delafossite oxide CuCrO 2 having a spin-3/2 antiferromagnetic triangular sublattice. First, we will show the effects of hole-doping by the substitution of nonmagnetic Mg 2+ for magnetic Cr 3+ on the physical properties of CuCrO 2, and will discuss the origin of nontrivial promotion of the 120° Néel state due to the coupling between the itinerant hole and localized spin. Next, we will show the effects of disorder introduced by the isovalent substitutions such as the nonmagnetic Ag + substitution for nonmagnetic Cu + and the nonmagnetic Al 3+ one for magnetic Cr 3+, and will discuss the possibility of appearance of unusual magnetic states such as spin liquid or spin nematic states.

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