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Topological superconductivity

By inducing superconductivity into topological materials novel Majorana quasiparticles can be created. It is the aim to create, detect and manipulate these Majorana states to test their non-abelian character.

Key publications

Selective area growth and stencil lithography for in situ fabricated quantum devices, Peter Schüffelgen, Daniel Rosenbach, Chuan Li, Tobias W. Schmitt, Michael Schleenvoigt, Abdur R. Jalil, Sarah Schmitt, Jonas Kölzer, Meng Wang, Benjamin Bennemann, Umut Parlak, Lidia Kibkalo, Stefan Trellenkamp, Thomas Grap, Doris Meertens, Martina Luysberg, Gregor Mussler, Erwin Berenschot, Niels Tas, Alexander A. Golubov, Alexander Brinkman, Thomas Schäpers, Detlev Grützmacher, Nature Nanotechnology 14,  825 (2019).

Zeeman-effect-induced 0-π transitions in ballistic Dirac semimetal Josephson junctions, Chuan Li, Bob de Ronde, Jorrit de Boer, Joost Ridderbos, Floris Zwanenburg, Yingkai Huang, Alexander Golubov, and Alexander Brinkman, Phys. Rev. Lett. 123, 026802 (2019).

4pi periodic Andreev bound states in a Dirac semimetal, Chuan Li, J. de Boer, B. de Ronde, S.V. Ramankutty, E. van Heumen, Y. Huang, A. de Visser, A.A. Golubov, M.S. Golden, A. Brinkman, Nature Materials 17, 875 (2018).

4π-periodic supercurrent from surface states in Cd3As2 nanowire-based Josephson junctions, An-Qi Wang, Cai-Zhen Li, Chuan Li, Zhi-Min Liao, Alexander Brinkman, Da-Peng Yu, Phys. Rev. Lett. 121, 237701 (2018).

Andreev reection in s-type superconductor proximized 3D topological insulator
E.S. Tikhonov, D.V. Shovkun, M. Snelder, M.P. Stehno, Y. Huang, M.S. Golden, A.A. Golubov, A. Brinkman, V.S. Khrapai
Phys. Rev. Lett. 117, 147001 (2016).

Gate-tunable transport properties of in-situ capped Bi2Te3 topological insulator thin films
P. Ngabonziza, M.P. Stehno, H. Myoren, V.A. Neumann, G. Koster, A. Brinkman
Adv. Electr. Mater. 1600157 (2016).

In-situ spectroscopy of intrinsic Bi2Te3 topological insulator thin fims and impact of extrinsic defects
P. Ngabonziza, R. Heimbuch, R.A. Klaassen, M.P. Stehno, M. Snelder, A. Solmaz, S.V. Ramankutty, E. Frantzeskakis, E. van Heumen, G. Koster, M.S. Golden, H.J.W. Zandvliet, and A. Brinkman
Phys. Rev. B 92, 035405 (2015).

Josephson supercurrent through a topological insulator surface state
M. Veldhorst, M. Snelder, M. Hoek, T. Gang, V. Guduru, X. Wang, U. Zeitler, W.G. van der Wiel, H. Hilgenkamp, A. Brinkman
Nature Materials 11, 417 (2012).