Regensburg 2019 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
O: Fachverband Oberflächenphysik
O 62: Poster Wednesday: Topology and Symmetry-Protected Materials
O 62.2: Poster
Mittwoch, 3. April 2019, 17:45–20:00, Poster B1
Study of ARPES, Magnetic and magneto-transport properties of Dy doped Bi2Te3 Topological Insulator — •Vinod Kumar Gangwar1, Shiv Kumar2, Yufeng Zhang3, Prashant Shahi4, Swapnil Patil1, Eike Fabian Schwier2, Kenya Shimada2, Yoshiya Uwatoko3, and Sandip Chatterjee1 — 1Department of Physics, Indian Institute of Technology (BHU) Varanasi 221005 — 2Hiroshima Synchrotron Radiation Center, Hiroshima University, Higashi-Hiroshima City, 739-0046 Japan — 3Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan — 4Department of Physics, D.D.U. Gorakhpur University, Gorakhpur 273009
Topological insulators are characterized by a gapped bulk state and gapless surface or edge states that is protected by time-reversal symmetry (TRS). TRS can be broken by magnetic impurities. To investigate the correlation between topological state and magnetism it is important to introduce magnetic elements into Topological insulators. In this study, we have synthesized the single crystals of Bi2-xDyxTe3 (x =0.06, 0.10, 0.16) and reported the effects of Dysprosium substitution on the topological properties in Bi2-xDyxTe3. XRD data indicate very good single crystallinity of Bi2-xDyxTe3 without any sign of secondary phase. We have measured the magnetization M(H) at different temperature and found that at low temperature it shows weak ferromagnetic ordering. From the ARPES and thermoelectric studies we found n-type nature of Dy doped Bi2Te3.