Orbital degree of freedom and phase separation in ferromagnetic manganites at finite temperatures
作者： S. Okamoto , S. Ishihara , S. Maekawa
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摘要: The spin and orbital phase diagram for perovskite manganites is investigated as a function of temperature hole concentration. superexchange double exchange interactions dominate the ferromagnetic phases in lightly moderately doped regions holes, respectively. two favor different states. Between phases, compete with each other separation appears wide range anisotropy space causes discontinuous changes state promotes separation.
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Ken’ichi Chahara, Toshiyuki Ohno, Masahiro Kasai, Yoko Kanke, Yuzoo Kozono, Magnetoresistance effect of La0.72Ca0.25MnOz/YBa2Cu3Oy/La0.72Ca0.25 MnOz trilayered films Applied Physics Letters. ,vol. 62, pp. 780- 782 ,(1993) , 10.1063/1.108577
R. von Helmolt, J. Wecker, B. Holzapfel, L. Schultz, K. Samwer, Giant negative magnetoresistance in perovskitelike La2/3Ba1/3MnOx ferromagnetic films. Physical Review Letters. ,vol. 71, pp. 2331- 2333 ,(1993) , 10.1103/PHYSREVLETT.71.2331
Yoshinori Tokura, Akira Urushibara, Yutaka Moritomo, Takahisa Arima, Atsushi Asamitsu, Giyu Kido, Nobuo Furukawa, Giant Magnetotransport Phenomena in Filling-Controlled Kondo Lattice System: La1-xSrxMnO3 Journal of the Physical Society of Japan. ,vol. 63, pp. 3931- 3935 ,(1994) , 10.1143/JPSJ.63.3931
S. Jin, T. H. Tiefel, M. McCormack, R. A. Fastnacht, R. Ramesh, L. H. Chen, Thousandfold Change in Resistivity in Magnetoresistive La-Ca-Mn-O Films Science. ,vol. 264, pp. 413- 415 ,(1994) , 10.1126/SCIENCE.264.5157.413
Clarence Zener, Interaction between the d -Shells in the Transition Metals. II. Ferromagnetic Compounds of Manganese with Perovskite Structure Physical Review. ,vol. 82, pp. 403- 405 ,(1951) , 10.1103/PHYSREV.82.403
P. W. Anderson, H. Hasegawa, Considerations on Double Exchange Physical Review. ,vol. 100, pp. 675- 681 ,(1955) , 10.1103/PHYSREV.100.675
Kenn Kubo, Nagao Ohata, A Quantum Theory of Double Exchange. I Journal of the Physical Society of Japan. ,vol. 33, pp. 21- 32 ,(1972) , 10.1143/JPSJ.33.21
Nobuo Furukawa, Transport Properties of the Kondo Lattice Model in the LimitS=∞ andD=∞ Journal of the Physical Society of Japan. ,vol. 63, pp. 3214- 3217 ,(1994) , 10.1143/JPSJ.63.3214
Nobuo Furukawa, Temperature dependence of conductivity in (La, Sr)MnO3 Journal of the Physical Society of Japan. ,vol. 64, pp. 3164- 3167 ,(1995) , 10.1143/JPSJ.64.3164
A. J. Millis, P. B. Littlewood, B. I. Shraiman, Double exchange alone does not explain the resistivity of La1-xSrxMnO3. Physical Review Letters. ,vol. 74, pp. 5144- 5147 ,(1995) , 10.1103/PHYSREVLETT.74.5144