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arXiv 0908.0074cond-mat.mes-hall
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石墨烯中量子霍尔态的非平衡击穿

Non-equilibrium breakdown of quantum Hall state in graphene

Vibhor Singh, Mandar M. Deshmukh

摘要:

在这份报告中,我们通过注入高电流密度($\sim$ 1 A/m),实验探测单层石墨烯中量子霍尔态的非平衡击穿。在整数填充因子附近测得的无耗散输运的临界电流显示填充因子的依赖性。的击穿可以理解的朗道能级(LL)之间的散射,从不同的LL的波函数的混合。为了进一步研究横向电场的影响,我们测量了不同偏置电流下$ν=2$到$ν=6$平台跃迁之间的横向电阻,并观察到一个不变点。

英文摘要:

In this report we experimentally probe the non-equilibrium breakdown of the quantum Hall state in monolayer graphene by injecting a high current density ($\sim$1A/m). The measured critical currents for dissipationless transport in the vicinity of integer filling factors show a dependence on filling factor. The breakdown can be understood in terms of inter Landau level (LL) scattering resulting from mixing of wavefunctions of different LLs. To further study the effect of transverse electric field, we measured the transverse resistance between the $ν=2$ to $ν=6$ plateau transition for different bias currents and observed an invariant point.

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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