Hauptseite > Publikationsdatenbank > Towards the Quantum-Anomalous-Hall-Effect in MagneticTopological Insulator Structures > print

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037 _ _ |a FZJ-2024-01248
041 _ _ |a English
100 1 _ |a Teller, Justus
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|e Corresponding author
111 2 _ |a DPG Frühjahrstagung
|c Dresden
|d 2023-03-27 - 2023-03-31
|w Germany
245 _ _ |a Towards the Quantum-Anomalous-Hall-Effect in MagneticTopological Insulator Structures
260 _ _ |c 2023
336 7 _ |a Conference Paper
|0 33
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336 7 _ |a INPROCEEDINGS
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500 _ _ |a DFG Germany’s Excellence Strategy—Cluster of Excellence Matter and Light for Quantum Computing (ML4Q) EXC 2004/1—390534769
520 _ _ |a Three-dimensional topological insulators (TIs) are a material class which may enable robust topological quantum computing by using so-called Majorana zero modes. Published theoretical work predicts the Majorana state to exist in magnetic topological insulators which exhibit the quantum anomalous Hall effect (QAHE). We present magnetotransport measurements of Cr-doped magnetic (Bi0.27Sb0.73)2Te3 which partially show the QAHE. At 1.2 K, the uniformly Cr-doped samples show a magnetic signature whose behaviour is probed under gate influence. Based on these measurements, an existing QAHE is ruled out. The results are compared to a magnetic TI-heterostructure which shows the QAHE. The temperature dependence of the effect is measured. In addition, the magnetic energy gap is probed by a gate dependent measurement. The QAHE is improved by current adjustment.
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650 2 7 |a Condensed Matter Physics
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700 1 _ |a Zimmermann, Erik
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700 1 _ |a Schleenvoigt, Michael
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700 1 _ |a Behner, Gerrit
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700 1 _ |a Moors, Marco
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700 1 _ |a Schüffelgen, Peter
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700 1 _ |a Mussler, Gregor
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700 1 _ |a Grützmacher, Detlev
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700 1 _ |a Schäpers, Thomas
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