Daniel Mendler's research while affiliated with Karlsruhe Institute of Technology and other places
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Publications (4)
We calculate the spatially resolved tunneling conductance of topological
superconductors (TSCs) based on ferromagnetic chains, measured by means of
spin-polarised scanning tunneling microscopy (SPSTM). Our analysis reveals
novel signatures of MFs arising from the interplay of their strongly
anisotropic spin-polarisation and the magnetisation conten...
We investigate the topological properties and the accessible Majorana fermion
(MF) phases ari\-sing in a hybrid device consisting of a chain of magnetic
adatoms placed on the surface of a conventional superconductor with Rashba
spin-orbit coupling (SOC). By identifying the favored classical magnetic ground
state of the adatom chain, we extract the...
We calculate the spatially resolved tunnelling conductance of topological superconductors (TSCs) based on ferromagnetic chains, measured by means of spin-polarised scanning tunnelling microscopy (SPSTM). Our analysis reveals novel signatures of MFs arising from the interplay of their strongly anisotropic spin-polarisation and the magnetisation cont...
We determine the nature of the magnetic order on the surface of a topological
insulator (TI) which develops due to hexagonal warping and the resulting Fermi
surface (FS) nesting in the presence of a repulsive Hubbard interaction. For
this purpose we investigate the spin susceptibility and derive a Landau theory
to compare the different accessible p...
Citations
... A helical spin structure 2,5-7, 30,31 has been shown to be equivalent to the effect of a Rashba interaction caused by the superconductors spin-orbit coupling [31][32][33] . The possibility of emergence of MBS in antiferromagnetically ordered chains has been also discussed 34,35 . ...
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... Moreover, we also examine the magnetoresistive properties of the system by exploiting ferromagnetic drains and resolving transport for wide range of the canting angle describing the spin-polarization of the Majorana edge states 58 . Interestingly, exploring the spin-selective transport characteristics have proved to be very useful in the context of Majorana polarization 53,[59][60][61][62][63] or Majorana spintronics 64 . Furthermore, ferromagnetic contacts turned out to be crucial for detecting entanglement in a similar system with normal superconductor instead of a topological one [65][66][67] . ...
... Notably, however, inhomogeneous magnetism is capable of simultaneously violating both P and T symmetries [28,29], without requiring any * kotetes@itp.ac.cn kind of SOC. This two-in-one effect appears particularly useful for engineering topological SCs in 1D [30][31][32][33][34][35][36][37][38][39] and 2D [35,[40][41][42][43][44][45][46][47]. Coupling (un)conventional SCs to periodically repeating magnetic textures forming crystals is known to lead to a rich variety of topological phases [45] and nonstandard transport effects [48][49][50]. ...
... Hybrid systems of magnetic and superconducting materials in reduced dimensions have been of great interest in recent years, owing to the exciting emergent physics such as unconventional superconductivity and topological edge modes expected in these platforms [1][2][3][4][5][6] . In particular, there has recently been a focus on antiferromagnetic materials proximity coupled to s-wave superconductors [7][8][9][10][11] . Since antiferromagnets possess no net magnetic moment in their magnetic unit cell, they do not have considerable stray fields which would destroy superconducting order. ...
