Planar Nernst and Hall effect in patterned ultrathin film of La0.7Sr0.3MnO3

Planar Nernst and Hall effect in patterned ultrathin film of La0.7Sr0.3MnO3
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La0.7Sr0.3MnO3 图案化超薄膜中的平面能斯特效应和霍尔效应

DOI:
10.1016/j.matchemphys.2016.06.022
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发表时间:
2016
影响因子:
4.6
通讯作者:
C. Tomy
C. Tomy
中科院分区:
材料科学3区
文献类型:
--
作者:
H. Sharma;H. Bana;A. Tulapurkar;C. Tomy

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我们在La0.7Sr0.3MnO_3(∼)图案化超薄膜(LSMO)中观察到了横向热电势、平面能斯特效应和平面霍尔效应。对于PNE,在薄膜的平面内施加热电流(通过产生温度梯度∇T),而在平面内施加100%μA的电流来测量PHE。即使在温差为ΔT=0.5K的情况下,LCMO超薄膜(∼8 nm)的平面能斯特效应也表现出∼_3Oe的矫顽力,证实了薄膜的铁磁性。在250K时,PNE中横向电压的角度依赖关系表现为四重正弦θcosθ依赖对称性,这与平面霍尔效应测量结果一致。
We present the observation oftransverse thermopower, orplanar Nernst Effect(PNE), andplanarHall Effect(PHE) in patterned ultrathin film (∼8 nm) of La0.7Sr0.3MnO3(LSMO). For PNE, a heat current was applied in-plane of the film (by creating a temperature gradient ∇T) whereas an in-plane current of 100 μA was applied for measuring PHE. Even for a temperature difference of ΔT = 5 K the planar Nernst effect in LCMO ultrathin film (∼8 nm) shows a coercivity of ∼3 Oe and confirms the ferromagnetic nature of the thin film. The angular dependence of transverse voltage in PNE shows a four-fold sinθ cosθ dependence symmetry at 250 K, which is consistent with the planar Hall effect measurement.
DOI: 10.1103/physrevb.88.184425
发表时间: 2013-11-25
期刊: PHYSICAL REVIEW B
影响因子: 3.7
作者:
Meier, D.;Reinhardt, D.;Reiss, G.
通讯作者: Reiss, G.
DOI: 10.1103/physrevlett.111.187201
发表时间: 2013-10-28
影响因子: 8.6
作者:
Schmid, M.;Srichandan, S.;Back, C. H.
通讯作者: Back, C. H.