Spin glass instead of superconductivity in Ba(Fe1−xCrx/2Nix/2)2As2

This article reviews the 40+ year old spin-glass field and one of its earliest model interpretations as a spin density wave. Our description is from an experimental phenomenological point of view with emphasis on new spin glass materials and their relation to topical problems and strongly correlated materials in condensed matter physics. We first simply define a spin glass (SG), give its basic ingredients and explain how the spin glasses enter into the statistical mechanics of classical phase transitions. We then consider the four basic experimental properties to solidly characterize canonical spin glass behavior and introduce the early theories and models. Here the spin density wave (SDW) concept is used to explain the difference between a short-range SDW, i.e. a SG and, in contrast, a long-range SDW, i.e. a conventional magnetic phase transition. We continue with the present state of SG, its massive computer simulations and recent proposals of chiral glasses and quantum SG. We then collect and mention the various SG 'spin-off's'. A major section uncovers the fashionable unconventional materials that display SG-like freezing and glassy ground states, such as (high temperature) superconductors, heavy fermions, intermetallics and Heuslers, pyrochlor and spinels, oxides and chalogenides and exotics, e.g. quasicrystals. Some conclusions and future directions complete the review.

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Spin glasses: redux: an updated experimental/materials survey

Mydosh

2015

Rep. Prog. Phys.

253

203

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Suppression of ferromagnetism governed by a critical lattice parameter in CeTiGe3 with hydrostatic pressure or V substitution

et al. 2022

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Spin glass instead of superconductivity in Ba(Fe_1−xCr_x/2Ni_x/2)₂As₂

Cited by 2 publications

References 11 publications

Spin glasses: redux: an updated experimental/materials survey

Spin glasses: redux: an updated experimental/materials survey

Suppression of ferromagnetism governed by a critical lattice parameter in CeTiGe3 with hydrostatic pressure or V substitution

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