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arXiv 0912.4531cond-mat.stat-mech
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阻挫系统中的“库仑相”

The "Coulomb phase" in frustrated systems

Christopher L. Henley

摘要:

“库仑相”是晶格模型(特别是高度受抑的反铁磁体)的一种涌现状态,它具有可以映射到无发散“通量”的局部约束。这种通量或极化的粗粒度版本的行为类似于电场或磁场;特别是,违反局部约束的缺陷表现为库仑相互作用的有效电荷。我调查的特点幂律关联函数和夹点的推导倒易空间图的漫散射,以及应用磁弛豫,量子力学的概括,相变到远程有序状态,和无序的影响。

英文摘要:

The "Coulomb phase" is an emergent state for lattice models (particularly highly frustrated antiferromagnets) which have local constraints that can be mapped to a divergence-free "flux". The coarse-grained version of this flux or polarization behave analogously to electric or magnetic fields; in particular, defects at which the local constraint is violated behave as effective charges with Coulomb interactions. I survey the derivation of the characteristic power-law correlation functions and the pinch-points in reciprocal space plots of diffuse scattering, as well as applications to magnetic relaxation, quantum-mechanical generalizations, phase transitions to long-range-ordered states, and the effects of disorder.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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