“…Our model consists of two interacting spin glasses, and we conduct an extensive theoretical analysis of the complexity of the model’s critical points using techniques from Random Matrix Theory. …”
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“…Spin glasses are disordered magnets with random interactions that are, generally, in conflict with each other. …”
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“…We report on the experimental and theoretical studies of cooling field (H(FC)) and temperature (T) dependent exchange bias (EB) in Fe(x)Au(1 − x)/Fe(19)Ni(81) spin glass (SG)/ferromagnet (FM) bilayers. When x varies from 8% to 14% in the Fe(x)Au(1 − x) SG alloys, with increasing T, a sign-changeable exchange bias field (H(E)) together with a unimodal distribution of coercivity (H(C)) are observed. …”
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“…The samples are paramagnetic at room temperature, but they undergo a spin-glass transition when the temperature drops below 75 K. …”
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“…Here we demonstrate that in a trapped ion setup, with present day technology, it is possible to realize a spin model of the Mattis-type that exhibits spin glass phases. Our method produces the glassy behaviour without the need for any disorder potential, just by controlling the detuning of the spin-phonon coupling. …”
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“…Randomness and frustration are believed to be two crucial criteria for the formation of spin glass state. However, the spin freezing occurs in some well-ordered crystals below the related temperature T(f) due to the instability of each spin state, which induces the variation of either magnetic moment value or exchange energy. …”
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“…A photonic connection between turbulence and spin glasses has been recently established both theoretically and experimentally using a random fiber laser as a photonic platform. …”
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“…Spin glass is the simplest disordered system that preserves the full range of complex collective behavior of interacting frustrating elements. …”
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“…Re-entrant spin glass (RSG) transitions in Ni-Mn and Au-Fe have been reassessed by acoustic measurements of the magneto-mechanical damping by domain walls. …”
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“…They are observed in the so-called “reentrant” spin-glass (RSG) phase, up to the critical concentration [Formula: see text] which separates the RSG and “true” spin glass (SG) within the low temperature part of the magnetic phase diagram of a-Fe(1−x)Mn(x). …”
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“…Here, it is demonstrated that Cr(2)Ge(2)Te(6) preserves the spin‐polarized nature in the amorphous phase, but undergoes a magnetic transition to a spin glass state below 20 K. Quantum‐mechanical computations reveal the microscopic origin of this transition in spin configuration: it is due to strong distortions of the Cr—Te—Cr bonds, connecting chromium‐centered octahedra, and to the overall increase in disorder upon amorphization. …”
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“…Recent work has shown that disorder-induced spin frustration might play a key role in exchange bias, suggesting new materials design approaches for spin-based electronic devices that harness this effect. Here, we design a spin glass with strong spin frustration induced by magnetic disorder by exploiting the distinctive structure of Fe intercalated ZrSe(2), where Fe(II) centers are shown to occupy both octahedral and tetrahedral interstitial sites and to distribute between ZrSe(2) layers without long-range structural order. …”
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“…Glassy magnetic behavior has been observed in a wide range of crystalline magnetic materials called spin glass. Here, we report spin glass behavior in a structural glass of a magnetic ionic liquid, C4mimFeCl(4). …”
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“…Together with the geometric frustration of the triangularly distributed Ce moments, this leads to a spin-glass phase below the spin freezing temperature T(f) ≈ 0.28 K.…”
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“…More importantly, we find that the magnetic moments at deeper energy levels exhibit a spin-glass-like characteristics such as slow dynamics and magnetic moment freezing whereas those at E(F) do not. …”
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