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Reduced Magneto-Resistivity of a Rare-Earth Crystalline and the Degeneracy Removals of Its Crystal-Field Levels |
| LIU Zhao-Sen |
| Faculty of Mathematics and Physics, Nanjing University of Information Science and Technology, Nanjing 210044 |
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| Cite this article: |
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LIU Zhao-Sen 2007 Chin. Phys. Lett. 24 2052-2055 |
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Abstract A theoretical approach is generalized and employed to calculate the magneto-resistivity of a rare-earth crystalline (CeAl2) with degenerate ground crystal-field (CF) level in the presence of external fields. The calculated results show that when a magnetic field is applied in the c-direction, the magneto-resistivity may be reduced by more than 90% in certain cases in comparison with the pure CF contribution at the same temperature, demonstrating the strong effects of the degeneracy removals of the CF levels on the magnetic resistivity.
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| Keywords:
72.10.-d
75.47.-m
75.10.Dg
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Received: 02 April 2007
Published: 25 June 2007
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| PACS: |
72.10.-d
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(Theory of electronic transport; scattering mechanisms)
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75.47.-m
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(Magnetotransport phenomena; materials for magnetotransport)
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75.10.Dg
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(Crystal-field theory and spin Hamiltonians)
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[1] Kasuya T 1956 Proc. Theor. Phys. 16 58
[2] Dekker A J 1965 J. Appl. Phys. 36 909
[3] Rao V U S and Wallace W E 1970 Phys. Rev. B 2 4613
[4] Barthem V M T S, Gignox D, Nait-Saada Aand Schmitt D 1988 Phys. Rev. B 37 1733
[5] Bakanowski S, Crow J E, Berk N F and Mihalisin T 1975 Solid State Commun. 17 1111
[6] Frauenheim Th, Matz W and Feller G 1979 Solid StateCommun. 29 805
[7] Christen M 1980 Solid State Commun. 36 571
[8] Liu Z S and Eschrig H 2006 Physica B 381 294
[9] Liu Z S and Guo S L 2003 Phys. Lett. A 314 244
[10] Liu Z S and Guo S L 2003 Phys. Lett. A 314 491
[11] Liu Z S 2004 Solid State Commun. 131 135
[12] Lea K R, Leask M J and Wolf W P 1962 J. Phys. Chem.Solids 23 1381 |
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