Spin Glass
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High Quality Content by WIKIPEDIA articles! A spin glass is a magnet with frustrated interactions, augmented by stochastic disorder, where usually ferromagnetic and antiferromagnetic bonds are randomly distributed. Its magnetic ordering resembles the positional ordering of a conventional, chemical glass. Spin glasses display many metastable structures leading to a plenitude of time scales which are difficult to explore experimentally or in simulations. It is the time dependence which distinguishes spin glasses from other magnetic systems. Beginning above the spin glass transition temperature,…mehr

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High Quality Content by WIKIPEDIA articles! A spin glass is a magnet with frustrated interactions, augmented by stochastic disorder, where usually ferromagnetic and antiferromagnetic bonds are randomly distributed. Its magnetic ordering resembles the positional ordering of a conventional, chemical glass. Spin glasses display many metastable structures leading to a plenitude of time scales which are difficult to explore experimentally or in simulations. It is the time dependence which distinguishes spin glasses from other magnetic systems. Beginning above the spin glass transition temperature, Tc, where the spin glass exhibits more typical magnetic behavior (such as paramagnetism as discussed here but other kinds of magnetism are possible), if an external magnetic field is applied and the magnetization is plotted versus temperature, it follows the typical Curie law (in which magnetization is inversely proportional to temperature) until Tc is reached, at which point the magnetization becomes virtually constant (this value is called the field cooled magnetization). This is the onset of the spin glass phase.