188 citations · 942 across the 17 of their papers we have counts for
17 papers
Circular photogalvanic effects in topological insulator/ferromagnet hybrid structures
T. Schumann, T. Kleinke, L. Braun +12
We study laser driven spin-current effects at ferromagnet/topological-insulator interfaces by two complementary experimental approaches. The DC photocurrent is studied in ferromagn…
Topological surface states in strained Dirac semimetal thin films
Pablo Villar Arribi, Jian-Xin Zhu, Timo Schumann +3
We computationally study the Fermi arc states in a Dirac semimetal, both in a semi-infinite slab and in the thin-film limit. We use CdA as a model system, and include pertu…
Possible signatures of mixed-parity superconductivity in doped polar SrTiO3 films
Timo Schumann, Luca Galletti, Hanbyeol Jeong +4
Superconductors that possess both broken spatial inversion symmetry and spin-orbit interactions exhibit a mix of spin singlet and triplet pairing. Here, we report on measurements o…
Determination of the crystal field splitting energy in Cd3As2 using magnetooptics
G. Krizman, T. Schumann, S. Tchoumakov +4
Symmetry considerations are of extreme importance to the topological properties of crystals. A crystal field splitting δ yields Dirac nodes near the Brillouin zone center in Cd3As2…
Probing charge pumping and relaxation of the chiral anomaly in a Dirac semimetal
Bing Cheng, Timo Schumann, Susanne Stemmer +1
The linear band crossings of 3D Dirac and Weyl semimetals are characterized by a charge chirality, the parallel or anti-parallel locking of electron spin to its momentum. Such mate…
Point group symmetry of cadmium arsenide thin films determined by convergent beam electron diffraction
Honggyu Kim, Manik Goyal, Salva Salmani-Rezaie +4
Cadmium arsenide (Cd3As2) is one of the first materials to be discovered to belong to the class of three-dimensional topological semimetals. Reported room temperature crystal struc…