Spin-dependent tunneling between individual superconducting bound states

Correlation of Magnetism and Disordered Shiba Bands in Fe Monolayer Islands on Nb(110)

“…After dipping, point spectroscopy on Nb(110) was performed to check for the presence of sub-gap states within the tip's superconducting gap, which indicate that magnetic material 13 has been successfully transferred to the tip. [60][61][62] To emphasize the spin-resolved contrast, which is not easily seen in the individual dI/dV maps (dI/dV ) (dI/dV )…”

Quasiparticle focusing of bound states in two-dimensional $s$-wave superconductors

“…2 (c-f) respectively]. To obtain the former we find the critical points lying on the Fermi surface and fulfilling ∇ε k r, and subsequently we evaluate expression (15). To obtain the latter, we compute the LDOS at the YSRstate energy for the energy dispersion ( 16) numerically and we extract the decay length from fitting radial cuts to the envelop function of the LDOS, namely a r e −r/ξLDOS .…”

“…YSR states contain information about the host, for instance, the properties of its band structure [9], the pairing function [10] or coexisting emergent phases such as charge density waves [11]. But besides their potential as a probing tool [12][13][14][15][16][17], arrays of YSR states evidence spectral signatures of Majorana zero modes [18][19][20][21][22][23][24] (see [25] for a review), and hence embody a promising pathway towards the realization of topological superconductivity . Understanding the connection between the Fermi surface of the substrate and the spatial properties of YSR states is therefore a question of both fundamental and practical interest.…”

Broadened Yu-Shiba-Rusinov states in dirty superconducting films and heterostructures

“…For a long time, modification of the superconducting state by a single magnetic impurity has been remaining theoretical concept only [24,25]. Progress in scanning tunneling microscopy (STM) makes possible to resolve spatial and energy dependence of YSR states [26][27][28][29][30][31][32][33]. Recent STM experimental studies have revealed rich physics of YSR states in superconductors (see Ref.…”