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Volumn 81, Issue 13, 2010, Pages

Anisotropy of the in-plane angular magnetoresistance of electron-doped Sr1-x Lax CuO2 thin films

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EID: 77955189539     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.81.134520     Document Type: Article
Times cited : (30)

References (29)
  • 19
    • 77952485898 scopus 로고    scopus 로고
    • 10.1088/1742-6596/150/5/052086It is possible that the in-plane MR contains a small positive contribution larger at temperatures close to the SC transition due to an out-of-plane component, coming from a small misalignment of the field and the sample.
    • V. Jovanović, Z. Z. Li, F. Bouquet, L. Fruchter and H. Raffy, J. Phys.: Conf. Ser. 150, 052086 (2009). 10.1088/1742-6596/150/5/052086
    • (2009) J. Phys.: Conf. Ser. , vol.150 , pp. 052086
    • Jovanović, V.1    Li, Z.Z.2    Bouquet, F.3    Fruchter, L.4    Raffy, H.5
  • 20
    • 77955205671 scopus 로고    scopus 로고
    • We estimated the misalignment to be smaller than a few degrees by measuring the AMR at 14 and 22 K of sample 2 inclined by 4° with respect to the usual measurement plane. The twofold amplitude A2 /C increased by 80% at 14 K, close to SC transition, where the MR in perpendicular field increases rapidly when the field increases. The twofold amplitude A2 /C was unchanged at 22 K. From Δρ (H) in a perpendicular field one can conclude that, already at temperatures 2-3 K above Tp the influence of a perpendicular field component on A2 /C becomes insignificant.
    • We estimated the misalignment to be smaller than a few degrees by measuring the AMR at 14 and 22 K of sample 2 inclined by 4°with respect to the usual measurement plane. The twofold amplitude A 2 / C increased by 80% at 14 K, close to SC transition, where the MR in perpendicular field increases rapidly when the field increases. The twofold amplitude A 2 / C was unchanged at 22 K. From Δ ρ (H) in a perpendicular field one can conclude that, already at temperatures 2-3 K above T p the influence of a perpendicular field component on A 2 / C becomes insignificant.
  • 21
    • 77955190849 scopus 로고    scopus 로고
    • Notice that starting from 25 K, sufficiently far from the SC transition, the amplitude A2 /C of sample 4 is smaller than the one of sample 3 at the same temperature.
    • Notice that starting from 25 K, sufficiently far from the SC transition, the amplitude A 2 / C of sample 4 is smaller than the one of sample 3 at the same temperature.
  • 28
    • 77955202366 scopus 로고    scopus 로고
    • note
    • There probably exists a small perpendicular (c -axis) component of the magnetic field (not being strictly parallel to the conducting planes at all angles) which could induce twofold oscillations of small amplitude, significant only very close (within a few kelvins) to the SC transition. However, this is not the cause of twofold oscillations since the MR (and so its influence on A 2 / C) due to a perpendicular component of the field (0.3 T in general) gets negligible as one increases temperature 2-3 K away from T p, i.e., the SC transition (Ref.).
  • 29
    • 77955190575 scopus 로고    scopus 로고
    • note
    • The observed effect of the current direction does not necessarily mean that the Lorentz force is really related to the cause of oscillations of AMR. The Lorentz force is strongest when H ⊥ I but in our case this is also the configuration where the current is parallel to one crystallographic axis (I ∥ a) and the magnetic field to the other (H ∥ b). In such a configuration one might imagine, for instance, a maximum (minimum) of the MR if the spins are parallel to crystallographic a axis (H ∥ b) and the current flows along the same axis. Equally, a minimum (maximum) of the MR could be expected if the spins are parallel to crystallographic b axis (H ∥ a) and the current flows along the a axis.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.