Negative Magnetoresistivity of ErBi and Its Crystal-Field Levels
LIU Zhao-Sen1, Divis Martin2, Sechovsky Vladimir2
1Faculty of Mathematics and Physics, Nanjing University of Information Science and Technology, Nanjing 2100442Department of Condensed Matter Physics, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 121 16 Prague 2, Czech Republic
Negative Magnetoresistivity of ErBi and Its Crystal-Field Levels
LIU Zhao-Sen1, Divis Martin2, Sechovsky Vladimir2
1Faculty of Mathematics and Physics, Nanjing University of Information Science and Technology, Nanjing 2100442Department of Condensed Matter Physics, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 121 16 Prague 2, Czech Republic
摘要A theoretical approach is generalized and employed in this work to evaluate the magnetoresistivity of ErBi in external magnetic fields. The calculated results and theoretical analyses show that when an external magnetic field is applied in the z-direction, the magnetoresistivity can be reduced considerably due to the degeneracy lifting of the crystal-field levels. However, when the magnetic field is exerted along the x-axis, the magnetoresistivity will be increased because of the formations of new magnetic states of the Er ion and its transitions within and between these new states.
Abstract：A theoretical approach is generalized and employed in this work to evaluate the magnetoresistivity of ErBi in external magnetic fields. The calculated results and theoretical analyses show that when an external magnetic field is applied in the z-direction, the magnetoresistivity can be reduced considerably due to the degeneracy lifting of the crystal-field levels. However, when the magnetic field is exerted along the x-axis, the magnetoresistivity will be increased because of the formations of new magnetic states of the Er ion and its transitions within and between these new states.
LIU Zhao-Sen;Divis Martin;Sechovsky Vladimir. Negative Magnetoresistivity of ErBi and Its Crystal-Field Levels[J]. 中国物理快报, 2009, 26(1): 17201-017201.
LIU Zhao-Sen, Divis Martin, Sechovsky Vladimir. Negative Magnetoresistivity of ErBi and Its Crystal-Field Levels. Chin. Phys. Lett., 2009, 26(1): 17201-017201.
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2009, Vol. 26 
