Physics – Condensed Matter – Materials Science
Scientific paper
2010-01-27
Phys. Rev. B 81, 195203 (2010)
Physics
Condensed Matter
Materials Science
Scientific paper
10.1103/PhysRevB.81.195203
The development of ferromagnetism in Mn-doped Bi2Te3 is characterized through measurements on a series of single crystals with different Mn content. Scanning tunneling microscopy analysis shows that the Mn substitutes on the Bi sites, forming compounds of the type Bi2-xMnxTe3, and that the Mn substitutions are randomly distributed, not clustered. Mn doping first gives rise to local magnetic moments with Curie-like behavior, but by the compositions Bi1.96Mn0.04Te3 and Bi1.91Mn0.09Te3 a second order ferromagnetic transition is observed, with Tc ~ 9-12 K. The easy axis of magnetization in the ferromagnetic phase is perpendicular to the Bi2Te3 basal plane. Thermoelectric power and Hall effect measurements show that the Mn-doped Bi2Te3 crystals are p-type. Angle resolved photoemission spectroscopy measurements show that the topological surface states that are present in pristine Bi2Te3 are also present in ferromagnetic Mn-doped Bi2-xMnxTe3, and that the dispersion relations of the surface states are changed in a subtle fashion.
Beidenkopf Haim
Cava Robert. J.
Checkelsky Joseph G.
Hasan Zahid Md.
Hor Yew San
No associations
LandOfFree
The development of ferromagnetism in the doped topological insulator Bi2-xMnxTe3 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The development of ferromagnetism in the doped topological insulator Bi2-xMnxTe3, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The development of ferromagnetism in the doped topological insulator Bi2-xMnxTe3 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-238369