超攀位错的Luttinger液体行为
Emergence of Luttinger Liquid behavior of a superclimbing dislocation
摘要：
根据初等标度维数分析，在固态He-4中，一个分布在Peierls势的几个谷上的超攀位错是一种非Luttinger液体，因为它的激发谱是抛物线型的。然而，蒙特卡罗模拟揭示了这种位错发展为Luttinger液体行为，其也可以经历到绝缘状态的转变。外加偏压可以恢复抛物线谱。提出了实验验证的效果。
英文摘要：
A superclimbing dislocation spread over several valleys of Peierls potential in solid Helium-4 represents a non-Luttinger Liquid according to the elementary scaling dimensional analysis because its excitation spectrum is parabolic. Monte Carlo simulations, however, reveal that such a dislocation develops Luttinger Liquid behavior, which can also undergo a transition into insulating state. External bias can restore the parabolic spectrum. An experimental verification of the effect is proposed.
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