236 citations · 1.4k across the 34 of their papers we have counts for
27 papers · 1 filter
Superconducting density of states and vortex lattice of LaRuP observed by Scanning Tunneling Spectroscopy
Marta Fernández-Lomana, Paula Obladen Aguilera, Beilun Wu +3
We provide the superconducting density of states of the iron based superconductor LaRu2P2 (Tc= 4.1 K), measured using millikelvin Scanning Tunneling Microscopy. From the tunneling…
Superconducting density of states of PtPb4
Pablo García Talavera, Jose Antonio Moreno, Edwin Herrera +5
PtPb is a type II superconductor with a bulk critical temperature K and an upper critical field of T. PtPb is related to non-superconducting…
Misfit layer superconductors, tuneable bulk heterostructures with strong 2D effects
Tomas Samuely, Martin Gmitra, Tristan Cren +2
Atomically thin layered materials are systems with zero limit bulk-to-surface ratio. Their physical properties are determined by two-dimensionality and strongly affected by interfa…
Enhancement of vortex liquid phase and reentrant behavior in NiBi3 single crystals
V. Rollano, M. C. de Ory, A. Gomez +12
We investigated the vortex phase diagram of needle shaped high quality NiBi3 single crystals by transport measurements. The current is applied along the crystalline b-axis of this…
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…
Large magnetoresistance in the iron-free pnictide superconductor LaRuP
Marta Fernández-Lomana, Víctor Barrena, Beilun Wu +5
The magnetoresistance of iron pnictide superconductors is often dominated by electron-electron correlations and deviates from the H or saturating behaviors expected for uncorre…
Low frequency imaginary impedance at the superconducting transition of 2H-NbSe
David Perconte, Samuel Manas-Valero, Eugenio Coronado +2
The superconducting transition leads to a sharp resistance drop in a temperature interval that can be a small fraction of the critical temperature T. A superconductor exactly a…
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…
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…
Influence of the multiband sign changing superconductivity on the vortex cores and on vortex pinning in the new stoichiometric high Tc CaKFe4As4
A. Fente, W. R. Meier, T. Kong +5
We study the superconducting density of states and vortex lattice of single crystals of CaKFeAs using a scanning tunneling microscope (STM). This material has a critical te…
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…
Enhancement of long range correlations in a 2D vortex lattice by incommensurate 1D disorder potential
I. Guillamon, R. Cordoba, J. Sese +4
Long range correlations in two-dimensional (2D) systems are significantly altered by disorder potentials. Theory has predicted the existence of disorder induced phenomena such as A…
Imaging superconducting vortex core and lattice with the scanning tunneling microscope
H. Suderow, I. Guillamon, J. G. Rodrigo +1
The observation of vortices in superconductors was a major breakthrough in developing the conceptual background for superconducting applications. Each vortex carries a flux quantum…
Quasiparticle mass enhancement close to the quantum critical point in BaFe(AsP)
P. Walmsley, C. Putzke, L. Malone +11
We report a combined study of the specific heat and de Haas-van Alphen effect in the iron-pnictide superconductor BaFe(AsP). Our data when combined with results…
Magnetic and superconducting phase diagrams in ErNi2B2C
J. A. Galvis, M. Crespo, I. Guillamón +5
We present measurements of the superconducting upper critical field Hc2(T) and the magnetic phase diagram of the superconductor ErNi2B2C made with a scanning tunneling microscope (…
Scanning tunneling spectroscopy of layers of superconducting 2H-TaSe: Evidence for a zero bias anomaly in single layers
J. A. Galvis, P. Rodière, I. Guillamón +7
We report a characterization of surfaces of the dichalcogenide TaSe using scanning tunneling microscopy and spectroscopy (STM/S) at 150 mK. When the top layer has the 2H struct…
Scanning microscopies of superconductors at very low temperatures
V. Crespo, A. Maldonado, J. A. Galvis +7
We discuss basics of scanning tunneling microscopy and spectroscopy (STM/S) of the superconducting state with normal and superconducting tips. We present a new method to measure th…
Reply to Comment by Borisenko et al. on article `A de Haas-van Alphen study of the Fermi surfaces of superconducting LiFeP and LiFeAs'
C. Putzke, A. I. Coldea, I. Guillamon +10
Recently, Borisenko et al have posted a Comment (arXiv:1108.1159) where they suggest an alternative interpretation of our de Haas-van Alphen (dHvA) measurements on the superconduct…
Chiral charge order in the superconductor 2H-TaS2
I. Guillamon, H. Suderow, J. G. Rodrigo +6
We find chiral charge order in the superconductor 2H-TaS2 using Scanning Tunneling Microscopy and Spectroscopy (STM/S) at 0.1 K. Topographic images show hexagonal atomic lattice an…
A de Haas-van Alphen study of the Fermi surfaces of superconducting LiFeP and LiFeAs
C. Putzke, A. I. Coldea, I. Guillamon +10
We report a de Haas-van Alphen (dHvA) oscillation study of the 111 iron pnictide superconductors LiFeAs with T_c ~18K and LiFeP with T_c~5K. We find that for both compounds the Fer…
Superconducting density of states at the border of an amorphous thin film grown by focused-ion-beam
I. Guillamon, H. Suderow, S. Vieira +5
We present very low temperature Scanning Tunneling Microscopy and Spectroscopy (STM/S) measurements of a W based amorphous thin film grown with focused-ion-beam. In particular, we…
Nodeless spin triplet superconducting gap in Sr2RuO4
H. Suderow, V. Crespo, I. Guillamon +5
We report on tunneling spectroscopy measurements using a Scanning Tunneling Microscope (STM) on the spin triplet superconductor Sr2RuO4. We find a negligible density of states clos…