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Chin. Phys. B, 2020, Vol. 29(7): 077402    DOI: 10.1088/1674-1056/ab90e4

Anomalous magnetoresistance in detwinned EuFe2As2

Zhuang Xu(徐状), Junxiang Pan(潘俊香), Zhen Tao(陶镇), Ruixian Liu(刘瑞鲜), Guotai Tan(谈国太)
Center for Advanced Quantum Studies and Department of Physics, Beijing Normal University, Beijing 100875, China
Abstract  The in-plane magnetotransport of detwinned EuFe2As2 single crystal has been investigated. In the antiferromagnetic phase of Eu2+ spins, very different magnetoresistance results are observed upon the change of the external magnetic field direction and the current direction. This could be attributed to the tunable orientation of the Eu2+ spins under magnetic field. Electron scattering by spin fluctuation, superzone boundary effect, and cyclotron motion of charge carriers are used to interpret the observed anomalous magnetoresistance which is measured by using a current along a direction. The remarkable features of magnetoresistance suggest that itinerant electrons strongly couple with the spin configuration of Eu2+, which has a huge influence on the transport properties of EuFe2As2.
Keywords:  magnetoresistance      spin      reorientation      iron pnictides  
Received:  24 April 2020      Revised:  01 May 2020      Accepted manuscript online: 
PACS:  75.47.-m (Magnetotransport phenomena; materials for magnetotransport)  
  74.25.-q (Properties of superconductors)  
  73.43.Qt (Magnetoresistance)  
Fund: Project supported by the Fundamental Research Funds for the Central Universities, China (Grant No. 2014JJCB27).
Corresponding Authors:  Guotai Tan     E-mail:

Cite this article: 

Zhuang Xu(徐状), Junxiang Pan(潘俊香), Zhen Tao(陶镇), Ruixian Liu(刘瑞鲜), Guotai Tan(谈国太) Anomalous magnetoresistance in detwinned EuFe2As2 2020 Chin. Phys. B 29 077402

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