Stéphane Pons
YOU?
Author Swipe
View article: Nernst effect and its thickness dependence in superconducting NbN films
Nernst effect and its thickness dependence in superconducting NbN films Open
Superconducting thin films and layered crystals display a Nernst signal generated by short-lived Cooper pairs above their critical temperature. Several experimental studies have broadly verified the standard theory invoking Gaussian fluctu…
View article: Selective band engineering of Bi/Si(111) by boron segregation
Selective band engineering of Bi/Si(111) by boron segregation Open
Atomically thin layers of metals deposited on semiconductors display a variety of physical properties such as superconductivity, charge density waves, topological phases, strong spin-orbit (Rashba) splitting, among others. To access these …
View article: Three-dimensional deformations in single-layer $α$ antimonene and interaction with a Au(111) surface from first principles
Three-dimensional deformations in single-layer $α$ antimonene and interaction with a Au(111) surface from first principles Open
Using density functional theory, we investigate the electronic structure of the alpha phase of an antimony monolayer in its isolated form and in contact to the (111) surface of gold. We demonstrate that the isolated single-layer actually d…
View article: Synergetic Exterior and Interfacial Approaches by Colloidal Carbon Quantum Dots for More Stable Perovskite Solar Cells Against UV
Synergetic Exterior and Interfacial Approaches by Colloidal Carbon Quantum Dots for More Stable Perovskite Solar Cells Against UV Open
The achievement of both efficiency and stability in perovskite solar cells (PSCs) remains a challenging and actively researched topic. In particular, among different environmental factors, ultraviolet (UV) photons play a pivotal role in co…
View article: Scanning tunneling microscopy observation of the hinge states of bismuth nanocrystals
Scanning tunneling microscopy observation of the hinge states of bismuth nanocrystals Open
International audience
View article: Manipulation of the Magnetic State of a Porphyrin-Based Molecule on Gold: From Kondo to Quantum Nanomagnet via the Charge Fluctuation Regime
Manipulation of the Magnetic State of a Porphyrin-Based Molecule on Gold: From Kondo to Quantum Nanomagnet via the Charge Fluctuation Regime Open
By moving individual Fe-porphyrin-based molecules with the tip of a scanning tunneling microscope in the vicinity of the elbow of the herringbone-reconstructed Au(111) containing a Br atom, we reversibly and continuously control their magn…
View article: STM observation of the hinge-states of bismuth nanocrystals
STM observation of the hinge-states of bismuth nanocrystals Open
The recent application of topological quantum chemistry to rhombohedral bismuth established the non-trivial band structure of this material. This is a 2$^{nd}$order topological insulator characterized by the presence of topology-imposed hi…
View article: Gold Atoms Promote Macroscopic Superconductivity in an Atomic Monolayer of Pb on Si(111)
Gold Atoms Promote Macroscopic Superconductivity in an Atomic Monolayer of Pb on Si(111) Open
Atomically thin superconductivity in Pb monolayers grown on Si(111) is affected by adding a tiny amount of Au atoms. In situ macroscopic electron transport measurements reveal that superconductivity develops at higher temperatures and mani…
View article: Superconducting Long-Range Proximity Effect through the Atomically Flat Interface of a Bi<sub>2</sub>Te<sub>3</sub> Topological Insulator
Superconducting Long-Range Proximity Effect through the Atomically Flat Interface of a Bi<sub>2</sub>Te<sub>3</sub> Topological Insulator Open
We report on structural and electronic properties of superconducting nanohybrids made of Pb grown in the ultrahigh vacuum on the atomically clean surface of single crystals of topological Bi2Te3. In situ scanning tunneling microscopy and s…
View article: Disorder-Promoted Splitting in Quasiparticle Interference at Nesting Vectors
Disorder-Promoted Splitting in Quasiparticle Interference at Nesting Vectors Open
Inelastic interactions of quantum systems with the environment usually wash coherent effects out. In the case of Friedel oscillations, the presence of disorder leads to a fast decay of the oscillation amplitude. Here we show both experimen…
View article: Disorder-induced splitting in quasiparticleinterference of Bi2Te3 Dirac electrons
Disorder-induced splitting in quasiparticleinterference of Bi2Te3 Dirac electrons Open
Inelastic interactions of quantum systems with environment usually wash coherent effects out. In the case of Friedel oscillations, the presence of disorder leads to a fast decay of the oscillation amplitude. Here we show both experimentall…
View article: Quantum Well States for Graphene Spin-Texture Engineering
Quantum Well States for Graphene Spin-Texture Engineering Open
The modification of graphene band structure, in particular via induced spin-orbit coupling, is currently a great challenge for the scientific community from both a fundamental and applied point of view. Here, we investigate the modificatio…
View article: Erratum: Broken symmetry of in-gap quasiparticle excitations in superconducting FeSe(001) with high defect density [Phys. Rev. B <b>98</b>, 220502(R) (2018)]
Erratum: Broken symmetry of in-gap quasiparticle excitations in superconducting FeSe(001) with high defect density [Phys. Rev. B <b>98</b>, 220502(R) (2018)] Open
Received 3 October 2019DOI:https://doi.org/10.1103/PhysRevB.100.169902©2019 American Physical SocietyPhysics Subject Headings (PhySH)Research AreasElectronic structureImpurities in superconductorsPairing mechanismsQuantum interference effe…
View article: Polarization dependence of angle-resolved photoemission with submicron spatial resolution reveals emerging one-dimensionality of electrons in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>NbSe</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:math>
Polarization dependence of angle-resolved photoemission with submicron spatial resolution reveals emerging one-dimensionality of electrons in Open
In materials with nearly commensurate band filling the electron liquid may spontaneously separate into components with distinct properties, yielding complex intra- and interunit cell ordering patterns and a reduced dimensionality. Polariza…
View article: Broken symmetry of in-gap quasiparticle excitations in superconducting FeSe(001) with high defect density
Broken symmetry of in-gap quasiparticle excitations in superconducting FeSe(001) with high defect density Open
International audience
View article: Strong coupling and periodic potential at the Pb/Sb(111) interface
Strong coupling and periodic potential at the Pb/Sb(111) interface Open
International audience
View article: Quantum confinement effects in Pb nanocrystals grown on InAs
Quantum confinement effects in Pb nanocrystals grown on InAs Open
In the recent work of Ref.\\cite{Vlaic2017-bs}, it has been shown that Pb\nnanocrystals grown on the electron accumulation layer at the (110) surface of\nInAs are in the regime of Coulomb blockade. This enabled the first scanning\ntunnelin…
View article: Superconducting parity effect across the Anderson limit
Superconducting parity effect across the Anderson limit Open
How small can superconductors be? For isolated nanoparticles subject to quantum size effects, P.W. Anderson in 1959 conjectured that superconductivity could only exist when the electronic level spacing δ is smaller than the superconducting…
View article: Emerging one-dimensionality from self-organization of electrons in NbSe$_3$
Emerging one-dimensionality from self-organization of electrons in NbSe$_3$ Open
Materials where the electron filling is close to commensurate filling provide one of the great challenges in materials science. Several proposals of unconventional orderings, where the electronic liquid self-organizes into components with …