66 citations · 253 across the 9 of their papers we have counts for
9 papers
Gapless superconductivity from extremely dilute magnetic disorder in 2H-NbSe2-xSx
Jose Antonio Moreno, Mercè Roig, Víctor Barrena +14
Most superconducting materials exhibit a vanishing density of states at the Fermi level and Anderson's theorem posits that the superconducting gap is robust against nonmagnetic dis…
Simplified feedback control system for Scanning Tunneling Microscopy
Francisco Martín-Vega, Víctor Barrena, Raquel Sánchez-Barquilla +18
A Scanning Tunneling Microscope (STM) is one of the most important scanning probe tools available to study and manipulate matter at the nanoscale. In a STM, a tip is scanned on top…
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…
Direct visualization of phase separation between superconducting and nematic domains in Co-doped CaFe2As2 close to a first order phase transition
Antón Fente, Alexandre Correa-Orellana, Anna E. Böhmer +9
We show that biaxial strain induces alternating tetragonal superconducting and orthorhombic nematic domains in Co substituted CaFe2As2. We use Atomic Force, Magnetic Force and Scan…
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…
Nodeless multiband superconductivity in stoichiometric single crystalline CaKFeAs
Kyuil Cho, A. Fente, S. Teknowijoyo +9
Measurements of the London penetration depth and tunneling conductance in single crystals of the recently discovered stoicheometric, iron - based superconductor, CaKFeAs (C…
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…
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…
Low-temperature specific heat of graphite and CeSb2: Validation of a quasi-adiabatic continuous method
T. Pérez-Castañeda, J. Azpeitia, J. Hanko +3
We present the application of a fast quasi-adiabatic continuous method to the measurement of specific heat at 4He temperatures, which can be used for the study of a wide range of m…