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29 papers · 2 filters
Imaging the transition from diffusive to Landauer resistivity dipoles
Serhii Kovalchuk, David Kämpfer, Jonathan K. Hofmann +6
A point-like defect in a uniform current-carrying conductor induces a dipole in the electrochemical potential, which counteracts the original transport field. If the mean free path…
Light-induced Orbital and Spin Magnetism in , , and Transition Metals
Theodoros Adamantopoulos, Dongwook Go, Peter M. Oppeneer +1
Understanding the coherent interplay of light with the magnetization in metals has been a long-standing problem in ultrafast magnetism. While it is known that when laser light acts…
Shear-resistant topology in quasi one-dimensional van der Waals material BiBr
Jonathan K. Hofmann, Hoyeon Jeon, Saban M. Hus +10
BiBr is a prototypical quasi one-dimensional (1D) material in which covalently bonded bismuth bromide chains are arranged in parallel, side-by-side and layer-by-layer, with…
Current-induced brightening of vacancy-related emitters in hexagonal boron nitride
Corinne Steiner, Rebecca Rahmel, Frank Volmer +9
We perform photoluminescence measurements on vacancy-related emitters in hexagonal boron nitride (hBN) that are notorious for their low quantum yields. The gating of these emitters…
Tunable diode effect in a superconducting tunnel junction with biharmonic drive
David Scheer, Rubén Seoane Souto, Fabian Hassler +1
A Josephson diode is a superconducting circuit element that enables non-reciprocal transport, allowing a dissipationless supercurrent to preferentially flow in a single direction.…
Industrially fabricated single-electron quantum dots in Si/Si-Ge heterostructures
Till Huckemann, Pascal Muster, Wolfram Langheinrich +12
This paper reports the compatibility of heterostructure-based spin qubit devices with industrial CMOS technology. It features Si/Si-Ge quantum dot devices fabricated using Infineon…