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Competition of 3d/4f orbitals due to competing conductivity and ferromagnetism in Fe/CoAs layers in Eu(Fe0.89Co0.11)2As2
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10.1063/1.4772760
/content/aip/journal/jap/113/1/10.1063/1.4772760
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/1/10.1063/1.4772760
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Temperature and magnetic field dependent experimental spin moments per formula unit (μ B) obtained from MCP; the inset shows the field dependence of the resistivity at 10 K.

Image of FIG. 2.
FIG. 2.

Temperature difference MCP under an applied field of 0.1 T, (a) 6.5 K-10 K; (b) 10 K-15 K; (c) 15 K-17 K; (d) 17 K-20 K; and (e) 20 K-25 K. The insets in (b), (c), (d), and (e) show the individual fits to the temperature components of 10 K, 15 K, 17 K, and 20 K, respectively. The experimental data are shown as circles and the KKR-CPA fits are shown as solid lines. The label B show the sharp vertex, due to the observed change in shape (highlighted by the dashed line); while label A in (c) shows the dip at pz = 0 a.u.

Image of FIG. 3.
FIG. 3.

Temperature difference MCP under an applied field of 0.2 T, (a) 6.5 K-10 K; (b) 10 K-12 K; (c) 12 K-15 K; (d) 15 K-17 K; and (e) 17 K-20 K. The insets in (b), (c), (d), and (e) show the individual fits to the temperature components of 12 K, 15 K, 17 K, and 20 K, respectively. Legend same as Fig. 2 , the label C here show the sharp vertex, representing the change in shape (the dash line is the eyes guide to show the shape change).

Image of FIG. 4.
FIG. 4.

Temperature difference MCP under an applied field of 2.5 T, (a) 6.5 K-15 K; (b) 15 K-17 K; and (c) 17 K-20 K. The insets in (a), (b), and (c) show the individual fits to the temperature components of 6.5 K, 15 K, and 17 K, respectively; legend same as Fig. 2 .

Image of FIG. 5.
FIG. 5.

Field and temperature dependent orbital-wise partial spin moment contributions. (a) Eu-4f; (b) average (Fe + Co)-3d; (c) As-4p orbital contributions. The upper panel (red) represents for 0.1 T; the middle panel (blue) represents for 0.2 T; the lower panel (pink) represents for 2.5 T. For X, Y, and M, see text. The points at T = 0 K (top panel) are marked with circles, representing the values of the individual orbital contribution from KKR-CPA calculations.

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/content/aip/journal/jap/113/1/10.1063/1.4772760
2013-01-03
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Competition of 3d/4f orbitals due to competing conductivity and ferromagnetism in Fe/CoAs layers in Eu(Fe0.89Co0.11)2As2
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/1/10.1063/1.4772760
10.1063/1.4772760
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