26 citations · 76 across the 15 of their papers we have counts for
15 papers
Parity-dependent coupling of molecular spin chains to a superconductor
Katerina Vaxevani, Jon Ortuzar, Stefano Trivini +6
Topological order can fractionalize the quantum numbers of the underlying particles. A paradigmatic example is the spin-1/2 states at the edges of an antiferromagnetic integer-spin…
Distinguishing Majorana zero modes from trivial defect states in an iron-based superconductor
Dongfei Wang, Jon Ortuzar, Freek Massee +5
Majorana zero modes, which obey non-Abelian exchange statistics, are promising candidates for topological quantum computation due to their robustness against environmental perturba…
Charge-tunable Cooper-pair diode
Jon Ortuzar, Stefano Trivini, Leonard Edens +2
Superconducting diodes, devices that allow Cooper-pair currents to flow more easily in one direction than the other, are set to become key building blocks for dissipationless elect…
Topological Engineering of a Frustrated Antiferromagnetic Triradical in Aza-Triangulene Architectures
Francisco Romero-Lara, Manuel Vilas-Varela, Manish Kumar +16
Open-shell nanographenes provide a versatile platform to host unconventional magnetic states within their π-conjugated networks. Particularly appealing are graphene architectures t…
Local control of parity and charge in nanoscale superconducting lead islands
Stefano Trivini, Jon Ortuzar, Katerina Vaxevani +3
Small superconducting islands can exhibit charge quantization, where Coulomb interactions compete with Cooper pairing. Using scanning tunneling spectroscopy, we probe this interpla…
Epitaxial growth of gold films on the elemental superconductors V(100), Nb(100) and Nb(110)
Dongfei Wang, Katerina Vaxevani, Danilo Longo +7
Quantum technologies require a new generation of superconducting electronic devices and circuitry. However, the superconducting materials used to construct them are restricted to a…
From local to collective superconductivity in proximitized graphene
Stefano Trivini, Tim Kokkeler, Jon Ortuzar +8
The superconducting proximity effect induces pairing correlations in metallic systems via Andreev scattering. This effect is particularly intriguing in graphene, as it enables two-…
Superconducting Spin-Singlet QuBit in a Triangulene Spin Chain
Chen-How Huang, Jon Ortuzar, M. A. Cazalilla
Chains of triangular nanographene (triangulene), recently identified as realizing the valence-bond solid phase of a spin-1 chain, offer a promising platform for quantum information…
Revealing inter-band electron pairing in a superconductor with spin-orbit coupling
Javier Zaldívar, Jon Ortuzar, Miguel Alvarado +8
Most superconducting mechanisms pair electrons within the same band, forming spin singlets. However, the discovery of multi-band superconductivity has opened new scenarios for pair…
Diluted Yu-Shiba-Rusinov arrays on the -BiPd anisotropic superconductor
Stefano Trivini, Jon Ortuzar, Javier Zaldivar +5
Magnetic adatoms on s-wave superconductors induce bound states inside the superconducting gap, called Yu-Shiba-Rusinov states (YSR). The anisotropy of the Fermi surface determines…
Theory of a Single Magnetic Impurity on a Thin Metal Film in Proximity to a Superconductor
Jon Ortuzar, Jose Ignacio Pascual, F. Sebastian Bergeret +1
We argue that the formation of Yu-Shiba-Rusinov excitations in proximitized thin films is largely mediated by a type of Andreev-bound state named after de Gennes and Saint James. T…
Robust Spin Polarization of Yu-Shiba-Rusinov States in Superconductor/Ferromagnetic Insulator Heterostructures
A. Skurativska, J. Ortuzar, D. Bercioux +2
Yu-Shiba-Rusinov (YSR) states arise as sub-gap excitations of a magnetic impurity in a superconducting host. Taking into account the quantum nature of the impurity spin in a single…
Pair excitations of a quantum spin on a proximitized superconductor
Stefano Trivini, Jon Ortuzar, Katerina Vaxevani +4
A magnetic impurity interacting with a superconductor develops a rich excitation spectrum formed by superposition of quasiparticles and spin states, which appear as Yu-Shiba-Rusino…
Extending the spin excitation lifetime of a magnetic molecule on a proximitized superconductor
Katerina Vaxevani, Jingcheng Li, Stefano Trivini +4
Magnetic molecules deposited on surfaces are a promising platform to individually address and manipulate spins. Long spin excitation lifetimes are necessary to utilize them in quan…
Yu-Shiba-Rusinov states in 2D superconductors with arbitrary Fermi contours
Jon Ortuzar, Stefano Trivini, Miguel Alvarado +5
Magnetic impurities on a superconductor induce sub-gap Yu-Shiba-Rusinov (YSR) bound states, localized at the impurity site and fading away from it for distances up to several nanom…