199 citations · 569 across the 34 of their papers we have counts for
29 papers · 1 filter
Strange metallicity in the Kagome metal NiIn: a DMFT investigation
Ruslan Mushkaev, Francesco Petocchi, Philipp Werner
Strange metallicity, characterized by a linear temperature dependence of the resistivity, is observed in a broad range of correlated materials, including heavy-fermion compounds an…
Electronic correlations and dynamical screening with ab initio quantum embedding
Chia-Nan Yeh, Francesco Petocchi, Alexander Hampel +4
First-principles descriptions of correlated quantum materials require a simultaneous treatment of strong local many-body effects and nonlocal dynamical screening. We present an eff…
Spin-stripes in the Hubbard model: a combined DMFT and Bethe-Salpeter analysis
Ruslan Mushkaev, Francesco Petocchi, Shintaro Hoshino +1
The Hubbard model is known to accommodate various electronic orders, including stripes, which are important for understanding the physics of cuprates. We study spin-stripe order in…
Next-generation EDIpack: A Lanczos-based package for quantum impurity models featuring general broken-symmetry phases, flexible bath topologies and multi-platform interoperability
Lorenzo Crippa, Igor Krivenko, Samuele Giuli +10
We present a next-generation version of EDIpack, a flexible, high-performance numerical library using Lanczos-based exact diagonalization to solve generic quantum impurity problems…
Ultrafast Electronic Structure Engineering in 1-TaS: Role of Doping and Amplitude Mode Dynamics
J. Jayabalan, Jiyu Chen, Laura Pätzold +12
In strongly correlated transition metal dichalcogenides, an intricate interplay of polaronic distortions, stacking arrangement, and electronic correlations determines the nature of…
Effect of Interlayer Stacking on the Electronic Properties of 1-TaS
Nelson Hua, Francesco Petocchi, Henry G. Bell +3
Controlled stacking of van der Waals materials is a powerful tool for exploring the physics of quantum condensed matter. Given the small binding between layers, exploitation for en…
The long-range origin of the black hole entropy
Andrea Solfanelli, Francesco Petocchi, Nicolò Defenu
The Sachdev-Ye-Kitaev (SYK) model, has emerged as a powerful tool for exploring the quantum nature of black holes, particularly their residual entropy at zero temperature. In this…
Nature of metallic and insulating domains in the CDW system 1T-TaSe2
M. Straub, F. Petocchi, C. Witteveen +12
We study the electronic structure of bulk 1T-TaSe in the charge density wave phase at low temperature. Our spatially and angle resolved photoemission (ARPES) data show insulati…
Momentum-Resolved Fingerprint of Mottness in Layer-Dimerized NbBr
Mihir Date, Francesco Petocchi, Yun Yen +20
In a well-ordered crystalline solid, insulating behaviour can arise from two mechanisms: electrons can either scatter off a periodic potential, thus forming band gaps that can lead…
Self-consistent +Extended Dynamical Mean Field Theory for semiconductors and insulators
Viktor Christiansson, Francesco Petocchi, Philipp Werner
Theoretical studies of semiconductors and band insulators are usually based on variants of the method without full self-consistency, like single-shot or quasiparticle…
Photo-induced insulator-metal transition in paramagnetic (VCr)O
Jiyu Chen, Francesco Petocchi, Viktor Christiansson +1
Pump-probe experiments with femtosecond time resolution allow to disentangle the electronic dynamics from the lattice response and thus provide valuable insights into the non-equil…
Internal consistency of multi-tier +EDMFT
Ruslan Mushkaev, Francesco Petocchi, Viktor Christiansson +1
The multi-tier +EDMFT scheme is an ab-initio method for calculating the electronic structure of correlated materials. While the approach is free from ad-hoc parameters, it requ…
Nature of the photo-induced metallic state in monoclinic VO
Jiyu Chen, Francesco Petocchi, Viktor Christiansson +1
The metal-insulator transition of VO, which in equilibrium is associated with a structural phase transition, has been intensively studied for decades. In particular, it is chal…
Fermion quartets on the square lattice
Dionys Baeriswyl, Francesco Petocchi, Philipp Werner
We study a microscopic model for four spinless fermions on the square lattice which exhibits a quartet bound state in the strong coupling regime. The four-particle quantum states a…
Correlated electronic structure of LaNiO under pressure
Viktor Christiansson, Francesco Petocchi, Philipp Werner
Recently, superconductivity with a up to 78 K has been reported in bulk samples of the bilayer nickelate LaNiO at pressures above 14 GPa. Important theoretical ta…
Light-induced insulator-metal transition in SrIrO reveals the nature of the insulating ground state
Dongsung Choi, Changming Yue, Doron Azoury +11
SrIrO has attracted a lot of attention due to its structural and electronic similarities to LaCuO which is the parent compound of high-T superconducting cuprate…
Photo-induced charge dynamics in 1-TaS
Francesco Petocchi, Jiyu Chen, Jiajun Li +2
Recent theoretical studies showed that the electronic structure of 1-TaS in the low-temperature commensurate charge density wave phase exhibits a nontrivial interplay betwee…
Time-resolved photoemission and RIXS study of a site-selective Mott insulator
Philipp Werner, Francesco Petocchi, Martin Eckstein
Inspired by the physics of rare earth nickelates, we study the photoemission (PES) and resonant inelastic X-ray scattering (RIXS) spectra of a correlated electron system with two t…
+EDMFT investigation of PrSrNiO under pressure
Viktor Christiansson, Francesco Petocchi, Philipp Werner
Motivated by the recent experimental observation of a large pressure effect on in PrSrNiO, we study the electronic properties of this compound as a function o…
Modified interlayer stacking and insulator to correlated-metal transition driven by uniaxial strain in 1-TaS
Christopher W. Nicholson, Francesco Petocchi, Björn Salzmann +6
Interlayer coupling is strongly implicated in the complex electronic properties of 1-TaS , but the interplay between this and electronic correlations remains unresolved. Her…
Mott versus hybridization gap in the low-temperature phase of -TaS
Francesco Petocchi, Christopher W. Nicholson, Bjoern Salzmann +4
We compute the correlated electronic structure of stacked -TaS bilayers using the + EDMFT method. Depending on the surface termination, the semi-infinite uncorrelated…
Causal versus local +EDMFT scheme and application to the triangular-lattice extended Hubbard model
Jiyu Chen, Francesco Petocchi, Philipp Werner
Using the triangular-lattice extended Hubbard model as a test system, we compare +EDMFT results for the recently proposed self-consistency scheme with causal auxiliary fields t…
Fully {\it ab-initio} electronic structure of CaRuO
Francesco Petocchi, Viktor Christiansson, Philipp Werner
The reliable {\it ab-initio} description of strongly correlated materials is a long-sought capability in condensed matter physics. The +EDMFT method is a promising scheme, whic…
Normal state of NdSrNiO from self-consistent +EDMFT
Francesco Petocchi, Viktor Christiansson, Fredrik Nilsson +2
The recent discovery of superconductivity in hole-doped NdNiO thin films has captivated the condensed matter physics community. Such compounds with a formal Ni valence have…