Results 21 to 30 of about 166,055 (125)
Mn-induced multiple magnetic ground states in Sr_{3}(Ru_{1−x}Mn_{x})_{2}O_{7}
Physical Review Research, 2021 Transition-metal oxides provide an excellent platform to generate ground states by tuning the various degrees of freedom via stimuli such as chemical doping.
Roshan Nepal +3 more
doaj +1 more source
Quantum mechanically driven structural-spin glass in two dimensions at finite temperature [PDF]
arXiv, 2022 In magnetic materials, spins sometimes freeze into spatially disordered glassy states. Glass forming liquids or structural glasses are found very often in three dimensions. However, in two dimensions(2D) it is believed that both spin glass and structural glass can never exist at a finite temperature because they are destroyed by thermal fluctuations ...
arxiv
Searching for spin glass ground states through deep reinforcement learning
Nature Communications, 2023 Spin glasses are disordered magnets with random interactions that are, generally, in conflict with each other. Finding the ground states of spin glasses is not only essential for understanding the nature of disordered magnets and many other physical ...
Changjun Fan +5 more
doaj +1 more source
Parallel Computing of Edwards—Anderson Model
Algorithms, 2021 A scheme for parallel computation of the two-dimensional Edwards—Anderson model based on the transfer matrix approach is proposed. Free boundary conditions are considered.
Mikhail Alexandrovich Padalko +3 more
doaj +1 more source
Spin pumping into a spin glass material [PDF]
Phys. Rev. B 101, 184412 (2020), 2019 Spin pumping is a recently established means for generating a pure spin current, whereby spins are pumped from a magnet into the adjacent target material under the ferromagnetic resonance condition. We theoretically investigate the spin pumping from an insulating ferromagnet into spin glass materials. Combining a dynamic theory of spin glasses with the
arxiv +1 more source
Chiral-glass transition and replica symmetry breaking of a three-dimensional Heisenberg spin glass [PDF]
, 2000 Extensive equilibrium Monte Carlo simulations are performed for a three-dimensional Heisenberg spin glass with the nearest-neighbor Gaussian coupling to investigate its spin-glass and chiral-glass orderings. The occurrence of a finite-temperature chiral-glass transition without the conventional spin-glass order is established.
arxiv +1 more source
Ordering of the Heisenberg Spin Glass in High Dimensions [PDF]
Phys. Rev. B 67 224412 (2003), 2002 Ordering of the Heisenberg spin glass with the nearest-neighbor Gaussian coupling is investigated by equilibrium Monte Carlo simulations in four and five dimensions. Ordering of the mean-field Heisenberg spin-glass is also studied for comparison. Particular attention is paid to the nature of the spin-glass and the chiral-glass orderings.
arxiv +1 more source
Toward understanding the dimensional crossover of canonical spin-glass thin films
Frontiers in PhysicsSpin-glass thin films exhibit many features different from the bulk. The freezing temperatures of spin-glass films are suppressed for reduced thickness and follow the Kenning relation. The dynamics are altered near the vacuum interface.
Qiang Zhai, Raymond L. Orbach
doaj +1 more source
Magnetic properties of nickel carbide nanoparticles with enhanced coercivity
AIP Advances, 2018 Rhombohedral nickel carbide (Ni3Cx, x=0.7, 1.2 and 1.5) nanoparticles (∼ 110 nm) with enhanced magnetic coercivity (HC up to 1.3 kOe) at temperature below the spin-glass freezing (Tf) have been demonstrated.
Meiying Xing +3 more
doaj +1 more source
Numerical evidence of the spin-chirality decoupling in the three-dimensional Heisenberg spin glass [PDF]
Phys. Rev. Letters 102, 027202 (2009), 2008 Ordering of the three-dimensional Heisenberg spin glass with Gaussian coupling is studied by extensive Monte Carlo simulations. The model undergoes successive chiral-glass and spin-glass transitions at nonzero temperatures T_{CG} > T_{SG} > 0, exhibiting the spin-chirality decoupling.
arxiv +1 more source