205 citations · 1.3k across the 43 of their papers we have counts for
43 papers
Stability and optoelectronic properties of oligothiophene molecules confined in boron-nitride nanotubes : A many-body theoretical approach
Xavier Blase, Mauricio Rodriguez-Mayorga, Ivan Duchemin
We investigate the structural and optoelectronic properties of oligothiophene (nT) molecules encapsulated in boron-nitride (BN) nanotubes using density functional theory, many-body…
Efficient analytic continuation approach to Bethe-Salpeter excitation spectra in selected energy windows
Ivan Duchemin, Xavier Blase
We explore the merits of building the Bethe-Salpeter absorption spectrum in a specific energy range using analytic continuation techniques. Specifically, we calculate iteratively a…
Optical spectra of small silver clusters with the Bethe-Salpeter formalism: a Reassessment
Xavier Blase, Ivan Duchemin
We study the optical absorption spectra of small Ag_n (n=2,4,6,8) clusters using the Bethe-Salpeter equation (BSE) formalism with a Hamiltonian built from GW quasiparticle energies…
Joint Approximate Diagonalization approach to Quasiparticle Self-Consistent calculations
Ivan Duchemin, Xavier Blase
We introduce an alternative route to quasiparticle self-consistent calculations () on the basis of a Joint Approximate Diagonalization of the one-body Gree…
Strange metal transport from coupling to fluctuating spins
Simone Fratini, Ivan Duchemin, Arnaud Ralko +1
Metals hosting strong electronic interactions, including high-temperature superconductors, behave in ways that do not conform to normal Fermi liquid theory. To pinpoint the microsc…
Polarizable Continuum Models and Green's Function Formalism: On the Dynamics of the Solvent Electrons
Ivan Duchemin, David Amblard, Xavier Blase
The many-body formalism, for the calculation of ionization potentials or electronic affinities, relies on the frequency-dependent dielectric function built from the electronic…