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arXiv 0909.1729cond-mat.str-el
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$ν_t = 1$上双层量子霍尔系统:赝自旋模型和面内磁场

Bilayer quantum Hall system at $ν_t = 1$: pseudospin models and in-plane magnetic field

O. Tieleman, A. Lazarides, D. Makogon, C. Morais Smith

摘要:

本文研究了两种基于赝磁的双层量子霍尔系统(BQHS)的理论模型,其填充因子为$ν_t = 1$。我们找到一个统一的框架,阐明了不同的近似。我们还考虑了在$ν_t = 1$的BQHS中的面内磁场的影响,通过从基本的微观物理推导出基态能量的方程。虽然这个方程是小的面内场,其预测同意最近的实验结果在较强的面内场,低电子密度。我们还考虑到有限温度的影响,通过重整化群分析,并发现它们是小的实验研究的温度。

英文摘要:

We investigate two theoretical pseudomagnon-based models for a bilayer quantum Hall system (BQHS) at total filling factor $ν_t = 1$. We find a unifying framework which elucidates the different approximations that are made. We also consider the effect of an in-plane magnetic field in BQHSs at $ν_t = 1$, by deriving an equation for the ground state energy from the underlying microscopic physics. Although this equation is derived for small in-plane fields, its predictions agree with recent experimental findings at stronger in-plane fields, for low electron densities. We also take into account finite-temperature effects by means of a renormalisation group analysis, and find that they are small at the temperatures that were investigated experimentally.

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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