Pauli-limited effect in the magnetic phase diagram of FeSexTe1−x thin films

Authors

Jincheng Zhuang, University of WollongongFollow
Zhen Li, University of WollongongFollow
Xun Xu, University of WollongongFollow
Li Wang, University of WollongongFollow
Wai Kong Yeoh, University of WollongongFollow
X Z. Xing, Southeast University
Zhixiang Shi, Southeast University
Xiaolin Wang, University of WollongongFollow
Yi Du, University of WollongongFollow
S X. Dou, University of WollongongFollow

RIS ID

104247

Publication Details

Zhuang, J. C., Li, Z., Xu, X., Wang, L., Yeoh, W. K., Xing, X. Z., Shi, Z. X., Wang, X. L., Du, Y. & Dou, S. X. (2015). Pauli-limited effect in the magnetic phase diagram of FeSexTe1−x thin films. Applied Physics Letters, 107 (22), 222601-1-222601-5.

Abstract

We present a detailed investigation on the doping dependence of the upper critical fieldHc2(T) of FeSexTe1−xthin films (0.18 ≤ x ≤ 0.90) by measuring the electrical resistivity as a function of magnetic field. The Hc2(T) curves exhibit a downturn behavior with decreasing temperature in all the samples, owing to the Pauli-limited effect (spin paramagnetic effect). The Pauli-limited effect on the upper critical field can be monotonically modulated by variation of the Se/Te composition. Our results show that Te-doping induced disorder and excess Fe atoms give rise to enhancement of the Pauli-limited effect.

Grant Number

ARC/DP120100095

Grant Number

ARC/DP140102581