Colossal anisotropic resistivity and oriented magnetic
domains in strained La0.325Pr0.3Ca0.375MnO3 films
Tao Jiang1, Shengwei Yang1, Haibiao Zhou1,2, Yukuai Liu1, Wenbo Zhao1, Lei Feng1,
Yubin Hou2, Qingyou Lu1,2 and Xiaoguang Li1，1
1
Hefei National Laboratory for Physical Sciences at Microscale, Department of
Physics, University of Science and Technology of China, Hefei 230026, P. R. China
2
High Magnetic Field Laboratory, Chinese Academy of Sciences and University of
Science and Technology of China, Hefei, 230031, P. R. China
Supplementary information
Anisotropic magnetoresistance (AMR):
Figure.S-1. AMR (R) of S1 at 3 T with the current parallel to [011] (a) and [100] (b)
axes under various temperatures. (c) Temperature dependences of R with the current
parallel to [011] and [100] directions, respectively, in different magnetic fields. The
inset shows a schematic arrangement of the measurements.
1
Corresponding author. E-mail address: lixg@ustc.edu.cn
Besides the AR effect, the phase separation may response sensitively to the
orientation of H with respect to the magnetic easy-axis, producing AMR due to strong
spin-orbital-lattice coupling in manganites.1,2 The inset of Fig. S-1(c) illustrates the
orientation of H relative to crystal axis and the electrical current, with the angle
between H and [100]/ [011] axes in the (100)/( 011 ) plane defined as . The AMRs for
current along [100] and [011] axes are conducted with H rotating in the (100)/( 011 )
plane, that is, the currents are always perpendicular to the fields so that the
contribution of the Lorentz magnetoresistances can be excluded. Figs. S-1(a) and (b)
present the angular dependences of the AMRs for the current along [011] and [100]
in S1 respectively. The AMR amplitude is defined as R  (    // ) /  // )  100%
where the  //   (  0o ) and    (  90o ) are the resistivities for a given field
parallel and perpendicular to the corresponding axes of the film, respectively. Fig.
S-1(c) is the summary of temperature dependencies of the maximum AMR in
different magnetic fields. It is noted that the large AMR emerges only around TMI,
consistent with previous reports.1,3 The maximum values of R are about 550% and
160% with the current measured along [011] and [100] axis respectively near TMI.
The similar T-dependence of both AR and AMR strongly suggests that the anisotropic
strain may not only lead to an orientation-preferred PS pattern around TMI, but also
make the FMM/AFI phase competition depend sensitively on the magnitude and
orientation of magnetic fields.
1
R. W. Li, H. Wang, X. Wang, X. Z. Yu, Y. Matsui, Z. H. Cheng, B. G. Shen, E. W.
Plummer, and J. Zhang, Proc. Natl. Acad. Sci. U.S.A 106, 14224 (2009).
2
J. Song, J. H. Park, J. Y. Kim, B. G. Park, Y. Jeong, H. J. Noh, S. J. Oh, H. J. Lin, and
C. Chen, Phys. Rev. B 72 (2005).
3
M. Egilmez, R. Patterson, K. H. Chow, and J. Jung, Appl. Phys. Lett. 90, 232506
(2007).