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首页> 外文期刊>Journal de Physique, IV: Proceedings of International Conference >Possible quantum hall effect in the two-dimensional organic conductor, τ-(EDO-S, S-DMEDT-TTF)_2(AuBr_2)_(1+y) in the two-Fermi surface system
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Possible quantum hall effect in the two-dimensional organic conductor, τ-(EDO-S, S-DMEDT-TTF)_2(AuBr_2)_(1+y) in the two-Fermi surface system

机译:二维费米表面系统中二维有机导体τ-(EDO-S,S-DMEDT-TTF)_2(AuBr_2)_(1 + y)的可能量子霍尔效应

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In the two-dimensional organic conductor, τ-(EDO-S,S-DMEDT-TTF)_2(AuBr_2)_(1+y), we have observed Shubnikov de Hass oscillations with Landau level down to n = 1 (quantum limit), and found Hall resistance plateau above 35 Tesla.(n = 1). This plateau might be interpreted as a new quantum Hall effect (QHE), realized by two 2D Fermi surfaces (FS). Since the areas and effective masses are, 0.66%(1.6 rau) and 6.1% (3.5-5.2 m_0) of the first Brillouin zone, the large FS can play the role of electron reservoir for the small FS. This explains the plateau structure in Hall effect. To confirm that two series of oscillations are associated with really thermodynamic phenomena, we performed torque and Shubnikov de Haas studies.
机译:在二维有机导体τ-(EDO-S,S-DMEDT-TTF)_2(AuBr_2)_(1 + y)中,我们观察到Shubnikov de Hass振荡的Landau能级降至n = 1(量子极限) ),发现霍尔电阻稳定在35特斯拉以上(n = 1)。这个平台可能被解释为通过两个2D费米曲面(FS)实现的新量子霍尔效应(QHE)。由于面积和有效质量分别是第一个布里渊区的0.66%(1.6 rau)和6.1%(3.5-5.2 m_0),因此大FS可以为小FS起到电子蓄积的作用。这解释了霍尔效应中的平台结构。为了确认两个系列的振荡与真正的热力学现象有关,我们进行了扭矩和Shubnikov de Haas研究。

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