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Spin correlations and colossal magnetoresistance in HgCr2Se4
Lin, Chaojing1; Yi, Changjiang1; Shi, Youguo1; Zhang, Lei2; Zhang, Guangming3; Mueller, Jens4; Li, Yongqing1,5,6
刊名PHYSICAL REVIEW B
2016-12-05
卷号94期号:22页码:1-11
DOI10.1103/PhysRevB.94.224404
文献子类Article
英文摘要This study aims to unravel the mechanism of colossal magnetoresistance (CMR) observed in n-type HgCr2Se4, in which low-density conduction electrons are exchange-coupled to a three-dimensional Heisenberg ferromagnet with a Curie temperature T-C approximate to 105 K. Near room temperature the electron transport exhibits an ordinary semiconducting behavior. As temperature drops below T * similar or equal to 2.1T(C), the magnetic susceptibility deviates from the Curie-Weiss law, and concomitantly the transport enters an intermediate regime exhibiting a pronounced CMR effect before a transition to metallic conduction occurs at T < T-C. Our results suggest an important role of spin correlations not only near the critical point but also for a wide range of temperatures (T-C < T < T*) in the paramagnetic phase. In this intermediate temperature regime the transport undergoes a percolation type of transition from isolated magnetic polarons to a continuous network when temperature is lowered or magnetic field becomes stronger.
WOS关键词FERROMAGNETIC SEMICONDUCTOR HGCR2SE4 ; MIXED-VALENCE MANGANITES ; MN-O FILMS ; TRANSPORT-PROPERTIES ; PHASE-SEPARATION ; MAGNETIC SEMICONDUCTORS ; CRITICAL-POINTS ; TEMPERATURE ; RESISTIVITY ; STATE
WOS研究方向Physics
语种英语
WOS记录号WOS:000389502200003
资助机构National Basic Research Program of China(2012CB921703 ; National Basic Research Program of China(2012CB921703 ; National Basic Research Program of China(2012CB921703 ; National Basic Research Program of China(2012CB921703 ; National Basic Research Program of China(2012CB921703 ; National Basic Research Program of China(2012CB921703 ; National Basic Research Program of China(2012CB921703 ; National Basic Research Program of China(2012CB921703 ; National Science Foundation of China(11374337 ; National Science Foundation of China(11374337 ; National Science Foundation of China(11374337 ; National Science Foundation of China(11374337 ; National Science Foundation of China(11374337 ; National Science Foundation of China(11374337 ; National Science Foundation of China(11374337 ; National Science Foundation of China(11374337 ; National Key Research and Development Program of China(2016YFA0300600) ; National Key Research and Development Program of China(2016YFA0300600) ; National Key Research and Development Program of China(2016YFA0300600) ; National Key Research and Development Program of China(2016YFA0300600) ; National Key Research and Development Program of China(2016YFA0300600) ; National Key Research and Development Program of China(2016YFA0300600) ; National Key Research and Development Program of China(2016YFA0300600) ; National Key Research and Development Program of China(2016YFA0300600) ; Strategic Initiative Program of Chinese Academy of Sciences(XDB070200) ; Strategic Initiative Program of Chinese Academy of Sciences(XDB070200) ; Strategic Initiative Program of Chinese Academy of Sciences(XDB070200) ; Strategic Initiative Program of Chinese Academy of Sciences(XDB070200) ; Strategic Initiative Program of Chinese Academy of Sciences(XDB070200) ; Strategic Initiative Program of Chinese Academy of Sciences(XDB070200) ; Strategic Initiative Program of Chinese Academy of Sciences(XDB070200) ; Strategic Initiative Program of Chinese Academy of Sciences(XDB070200) ; 2015CB921102) ; 2015CB921102) ; 2015CB921102) ; 2015CB921102) ; 2015CB921102) ; 2015CB921102) ; 2015CB921102) ; 2015CB921102) ; 11474330 ; 11474330 ; 11474330 ; 11474330 ; 11474330 ; 11474330 ; 11474330 ; 11474330 ; 61425015) ; 61425015) ; 61425015) ; 61425015) ; 61425015) ; 61425015) ; 61425015) ; 61425015) ; National Basic Research Program of China(2012CB921703 ; National Basic Research Program of China(2012CB921703 ; National Basic Research Program of China(2012CB921703 ; National Basic Research Program of China(2012CB921703 ; National Basic Research Program of China(2012CB921703 ; National Basic Research Program of China(2012CB921703 ; National Basic Research Program of China(2012CB921703 ; National Basic Research Program of China(2012CB921703 ; National Science Foundation of China(11374337 ; National Science Foundation of China(11374337 ; National Science Foundation of China(11374337 ; National Science Foundation of China(11374337 ; National Science Foundation of China(11374337 ; National Science Foundation of China(11374337 ; National Science Foundation of China(11374337 ; National Science Foundation of China(11374337 ; National Key Research and Development Program of China(2016YFA0300600) ; National Key Research and Development Program of China(2016YFA0300600) ; National Key Research and Development Program of China(2016YFA0300600) ; National Key Research and Development Program of China(2016YFA0300600) ; National Key Research and Development Program of China(2016YFA0300600) ; National Key Research and Development Program of China(2016YFA0300600) ; National Key Research and Development Program of China(2016YFA0300600) ; National Key Research and Development Program of China(2016YFA0300600) ; Strategic Initiative Program of Chinese Academy of Sciences(XDB070200) ; Strategic Initiative Program of Chinese Academy of Sciences(XDB070200) ; Strategic Initiative Program of Chinese Academy of Sciences(XDB070200) ; Strategic Initiative Program of Chinese Academy of Sciences(XDB070200) ; Strategic Initiative Program of Chinese Academy of Sciences(XDB070200) ; Strategic Initiative Program of Chinese Academy of Sciences(XDB070200) ; Strategic Initiative Program of Chinese Academy of Sciences(XDB070200) ; Strategic Initiative Program of Chinese Academy of Sciences(XDB070200) ; 2015CB921102) ; 2015CB921102) ; 2015CB921102) ; 2015CB921102) ; 2015CB921102) ; 2015CB921102) ; 2015CB921102) ; 2015CB921102) ; 11474330 ; 11474330 ; 11474330 ; 11474330 ; 11474330 ; 11474330 ; 11474330 ; 11474330 ; 61425015) ; 61425015) ; 61425015) ; 61425015) ; 61425015) ; 61425015) ; 61425015) ; 61425015)
内容类型期刊论文
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/30251]  
专题合肥物质科学研究院_中科院强磁场科学中心
作者单位1.Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China
2.Chinese Acad Sci, High Field Magnet Lab, Hefei 230031, Peoples R China
3.Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China
4.Goethe Univ Frankfurt, Inst Phys, D-60438 Frankfurt, Germany
5.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100190, Peoples R China
6.Beijing Key Lab Nanomat & Nanodevices, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714		 Lin, Chaojing,Yi, Changjiang,Shi, Youguo,et al. Spin correlations and colossal magnetoresistance in HgCr2Se4[J]. PHYSICAL REVIEW B,2016,94(22):1-11.
APA Lin, Chaojing.,Yi, Changjiang.,Shi, Youguo.,Zhang, Lei.,Zhang, Guangming.,...&Li, Yongqing.(2016).Spin correlations and colossal magnetoresistance in HgCr2Se4.PHYSICAL REVIEW B,94(22),1-11.
MLA Lin, Chaojing,et al."Spin correlations and colossal magnetoresistance in HgCr2Se4".PHYSICAL REVIEW B 94.22(2016):1-11.
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