82 citations · 424 across the 18 of their papers we have counts for
13 papers · 1 filter
Superconducting density of states and bandstructure at the surface of the candidate topological superconductor Au2Pb
Francisco Martín-Vega, Edwin Herrera, Beilun Wu +8
The electronic bandstructure of AuPb has a Dirac cone which gaps when undergoing a structural transition into a low temperature superconducting phase. This suggests that the su…
Band structure, superconductivity and polytypism in AuSn
Edwin Herrera, Beilun Wu, Evan O'Leary +13
The orthorhombic compound AuSn4 is compositionally similar to the Dirac node arc semimetal PtSn. AuSn is, contrary to PtSn, superconducting with a critical temperature…
Coherent coupling between vortex bound states and magnetic impurities in 2D layered superconductors
Sunghun Park, Vıctor Barrena, Samuel Mañas-Valero +9
Bound states in superconductors are expected to exhibit a spatially resolved electron-hole asymmetry which is the hallmark of their quantum nature. This asymmetry manifests as osci…
Anisotropic superconductivity and Fermi surface reconstruction in the spin-vortex antiferromagnetic superconductor CaK(FeNi)As
José Benito Llorens, Edwin Herrera, Víctor Barrena +9
High critical temperature superconductivity often occurs in systems where an antiferromagnetic order is brought near by slightly modifying pressure or doping. CaKFeAs$_4…
Thermal creep emerging from cooling a tilted vortex lattice in uniaxial superconductor
Roland Willa, Jose Augusto Galvis, Jose Benito-Llorens +3
A perturbed system relaxes towards an equilibrium given by a minimum in the potential energy landscape. This often occurs by thermally activated jumps over metastable states. The c…
Observation of a gel of quantum vortices in a superconductor at very low magnetic fields
José Benito Llorens, Lior Embon, Alexandre Correa +13
A gel consists of a network of particles or molecules formed for example using the sol-gel process, by which a solution transforms into a porous solid. Particles or molecules in a…
Attractive interaction between superconducting vortices in tilted magnetic fields
Alexandre Correa, Federico Mompean, Isabel Guillamon +8
Many practical applications of high T superconductors involve layered materials and magnetic fields applied on an arbitrary direction with respect to the layers. When the aniso…
Tilted vortex cores and superconducting gap anisotropy in 2H-NbSe2
J. A. Galvis, E. Herrera, C. Berthod +3
Superconducting vortex cores have been extensively studied for magnetic fields applied perpendicular to the surface by mapping the density of states (DOS) through Scanning Tunnelin…
Vortex creep at very low temperatures in single crystals of the extreme type-II superconductor RhInS
Edwin Herrera-Vasco, 1 José Benito-Llorens, Udhara S. Kaluarachchi +4
We image vortex creep at very low temperatures using Scanning Tunneling Microscopy (STM) in the superconductor RhInS (=2.25 K). We measure the superconducting gap…
Subsurface bending and reorientation of tilted vortex lattices in the bulk due to Coulomb-like repulsion at the surface
E. Herrera, I. Guillamon, J. A. Galvis +6
We study vortex lattices (VLs) in superconducting weak-pinning platelet-like crystals of -BiPd in tilted fields with a Scanning Tunneling Microscope. We show that vortices…
Field dependence of the vortex core size probed by STM
A. Fente, E. Herrera, I. Guillamon +5
We study the spatial distribution of the density of states (DOS) at zero bias N(r) in the mixed state of single and multigap superconductors. We provide an analytic expression for…
Single gap superconductivity in beta-Bi2Pd
J. Kačmarčík, Z. Pribulová, T. Samuely +8
beta-Bi2Pd compound has been proposed as another example of a multi-gap superconductor [Y. Imai et al., J. Phys. Soc. Jap. 81, 113708 (2012)]. Here, we report on measurements of se…
Magnetic field dependence of the density of states in the multiband superconductor -BiPd
E. Herrera, I. Guillamon, J. A. Galvis +8
We present very low temperature scanning tunneling microscopy (STM) experiments on single crystalline samples of the superconductor -BiPd. We find a single fully isotropic s…