TY - JOUR
T1 - Anomalous Hall effect of Nd0.7Sr0.3MnO3 films with large magnetoresistance ratio
T2 - Evidence of Berry phase effect
AU - Yang, H. C.
AU - Wang, L. M.
AU - Horng, H. E.
PY - 2001/11/1
Y1 - 2001/11/1
N2 - The transverse Hall resistivity, ρxy, and magnetization, M, of [110] and [100] oriented epitaxial Nd0.7Sr0.3MnO3 films with large magnetoresistance were measured as a function of temperature and applied magnetic field to study the ordinary and spontaneous Hall coefficients. In the ferromagnetic regime, 100 K s/Ro)×T was found to be proportional to exp(-Ec/kBT), where Rs is the spontaneous Hall coefficient, Ro is the ordinary Hall coefficient, and Ec is the core energy of the magnetic dipole. In addition, Rs was found to be proportional to ρxx2 in the low-temperature regime (T<160 K) where the ordinary Hall coefficient, Ro, is independent of temperature. A scaling behavior, Rs∝ρxx was observed at high temperatures (T>160 K). Hall effects of [110] and [100] oriented films are compared to each other. The results are discussed in terms of the exiting theories.
AB - The transverse Hall resistivity, ρxy, and magnetization, M, of [110] and [100] oriented epitaxial Nd0.7Sr0.3MnO3 films with large magnetoresistance were measured as a function of temperature and applied magnetic field to study the ordinary and spontaneous Hall coefficients. In the ferromagnetic regime, 100 K s/Ro)×T was found to be proportional to exp(-Ec/kBT), where Rs is the spontaneous Hall coefficient, Ro is the ordinary Hall coefficient, and Ec is the core energy of the magnetic dipole. In addition, Rs was found to be proportional to ρxx2 in the low-temperature regime (T<160 K) where the ordinary Hall coefficient, Ro, is independent of temperature. A scaling behavior, Rs∝ρxx was observed at high temperatures (T>160 K). Hall effects of [110] and [100] oriented films are compared to each other. The results are discussed in terms of the exiting theories.
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M3 - Article
AN - SCOPUS:0035499780
SN - 0163-1829
VL - 64
SP - 1744151
EP - 1744156
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 17
M1 - 174415
ER -