Experimental Evidence: Exchanged Polarons Introducing Ferromagnetic Ordering in Strongly Correlated Electronic Materials of Doped Manganites
XIONG Guang-Cheng, MA Yu-Bin, WANG Shi-Qi, SONG Xian-Feng, ZHOU Xin, LIAN Gui-Jun
School of Physics, Peking University, Beijing 100871
Experimental Evidence: Exchanged Polarons Introducing Ferromagnetic Ordering in Strongly Correlated Electronic Materials of Doped Manganites
XIONG Guang-Cheng;MA Yu-Bin;WANG Shi-Qi;SONG Xian-Feng;ZHOU Xin;LIAN Gui-Jun
School of Physics, Peking University, Beijing 100871
关键词 ：
71.27.+a ,
75.47.Lx ,
71.38.Ht
Abstract ： We present direct experimental evidence that ferromagnetic (FM) transition in doped manganites is introduced by exchanged polarons rather than `bare' eg electrons and the FM transition depends on hopping energy of polarons regardless of variation of experimental methods. The observed universal relationships between polaron hopping energy and FM transition suggest a simply polaron exchange picture for understanding the origin of FM ordering in the complex strongly correlated electronic materials of manganites.
Key words ：
71.27.+a
75.47.Lx
71.38.Ht
出版日期: 2006-05-01
:
71.27.+a
(Strongly correlated electron systems; heavy fermions)
75.47.Lx
(Magnetic oxides)
71.38.Ht
(Self-trapped or small polarons)
引用本文:
XIONG Guang-Cheng;MA Yu-Bin;WANG Shi-Qi;SONG Xian-Feng;ZHOU Xin;LIAN Gui-Jun. Experimental Evidence: Exchanged Polarons Introducing Ferromagnetic Ordering in Strongly Correlated Electronic Materials of Doped Manganites[J]. 中国物理快报, 2006, 23(5): 1273-1275.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2006/V23/I5/1273
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2006, Vol. 23 
