461 citations · 1.8k across the 25 of their papers we have counts for
26 papers
Data-Driven Prediction of NaCl-Type Entropy-Stabilized Oxide Compositions from First-Principles and Supervised Learning
Sebastien Junier, Celine Barreteau, David Berardan +2
Entropy-stabilized oxides (ESOs) open access to vast multicomponent compositional spaces, but identifying promising candidates remains challenging because of the large number of po…
Doping Tunable CDW Phase Transition in Bulk 1T-ZrSe
Andreas Ørsted, Alessandro Scarfato, Céline Barreteau +2
Tuneable electronic properties in transition metal dichalcogenides (TMDs) are essential to further their use in device applications. Here, we present a comprehensive scanning tunne…
Large saturation moment and high ferromagnetic transition temperature in a structurally disordered inverse Heusler alloy Fe2RuGe
Sudip Chakraborty, Shuvankar Gupta, Vidha Bhasin +10
We report the successful synthesis of a new 4 based polycrystalline inverse Heusler alloy FeRuGe by an arc melting process and have studied in detail its structural, magneti…
4d-element induced improvement of structural disorder and development of weakly re-entrant spin-glass behaviour in NiRuMnSn
Shuvankar Gupta, Sudip Chakraborty, Vidha Bhasin +12
The pursuit of efficient spin-polarization in quaternary Heusler alloys with the general formula (where X, , and Y are transition metals and Z is a p-block element), ha…
High spin-polarization in a disordered novel quaternary Heusler alloy FeMnVGa
Shuvankar Gupta, Sudip Chakraborty, Vidha Bhasin +10
In this work, we report the successful synthesis of a Fe-based novel half-metallic quaternary Heusler alloy FeMnVGa and its structural, magnetic and transport properties probed thr…
Coexisting structural disorder and robust spin-polarization in half-metallic FeMnVAl
Shuvankar Gupta, Sudip Chakraborty, Santanu Pakhira +6
Half-metallic ferromagnets (HMF) are on one of the most promising materials in the field of spintronics due to their unique band structure consisting of one spin sub-band having me…
Multiband charge density wave exposed in a transition metal dichalcogenide
Árpád Pásztor, Alessandro Scarfato, Marcello Spera +5
In the presence of multiple bands, well-known electronic instabilities may acquire new complexity. While multiband superconductivity is the subject of extensive studies, the possib…
Flipping exciton angular momentum with chiral phonons in MoSe/WSe heterobilayers
A. Delhomme, D. Vaclavkova, A. Slobodeniuk +11
Identifying quantum numbers to label elementary excitations is essential for the correct description of light-matter interaction in solids. In monolayer semiconducting transition m…
Synthetic Semimetals with van der Waals Interfaces
Bojja Aditya Reddy, Evgeniy Ponomarev, Ignacio Gutiérrez-Lezama +4
The assembly of suitably designed van der Waals (vdW) heterostructures represents a new approach to produce artificial systems with engineered electronic properties. Here, we apply…
Optimization of criteria for an efficient screening of new thermoelectric compounds: the TiNiSi structure type as a case-study
Celine Barreteau, Jean-Claude Crivello, Jean-Marc Joubert +1
High-throughput calculations are a very promising tool for screening a large number of compounds in order to discover new useful materials. Ternary intermetallic are thus investiga…
Semimetal-to-semiconductor transition and charge-density-wave melting in -TiSeS single crystals
M. -L. Mottas, T. Jaouen, B. Hildebrand +9
The transition metal dichalcogenide -TiSe is a quasi-two-dimensional layered material with a phase transition towards a commensurate charge density wave (CDW) at a critical…
Phase Separation in the Vicinity of Fermi Surface Hot Spots
T. Jaouen, B. Hildebrand, M. -L. Mottas +12
Spatially inhomogeneous electronic states are expected to be key ingredients for the emergence of superconducting phases in quantum materials hosting charge-density-waves (CDWs). P…
Microfocus laser-ARPES on encapsulated mono-, bi-, and few-layer 1T'-WTe
Irène Cucchi, Ignacio Gutiérrez-Lezama, Edoardo Cappelli +11
Two-dimensional crystals of semimetallic van der Waals materials hold much potential for the realization of novel phases, as exemplified by the recent discoveries of a polar metal…
Looking for new thermoelectric materials among the TMX intermetallics using high-throughput calculations
Celine Barreteau, Jean-Claude Crivello, Jean-Marc Joubert +1
Within 4 different crystal structures, 2280 ternary intermetallic configurations have been investigated via high-throughput density functional theory calculations in order to disco…
Holographic imaging of the complex charge density wave order parameter
Árpád Pásztor, Alessandro Scarfato, Marcello Spera +3
The charge density wave (CDW) in solids is a collective ground state combining lattice distortions and charge ordering. It is defined by a complex order parameter with an amplitude…
Local Real-Space View of the Achiral 1-TiSe 2 2 2 Charge Density Wave
B. Hildebrand, T. Jaouen, M. -L. Mottas +5
The transition metal dichalcogenide 1-TiSe is a quasi-two-dimensional layered material undergoing a commensurate 2 2 2 charge density wave (CDW) transition…
Dimensional cross-over of the charge density wave order parameter in thin exfoliated 1T-VSe
Árpád Pásztor, Alessandro Scarfato, Céline Barreteau +2
The capability to isolate one to few unit-cell thin layers from the bulk matrix of layered compounds opens fascinating prospects to engineer novel electronic phases. However, a com…
Isotope effect in superconducting n-doped SrTiO
A. Stucky, G. Scheerer, Z. Ren +5
We report the influence on the superconducting critical temperature in doped SrTiO of the substitution of the natural O atoms by the heavier isotope O. We o…
Local resilience of the -TiSe charge density wave to Ti self-doping
B. Hildebrand, T. Jaouen, C. Didiot +10
In Ti-intercalated self-doped -TiSe crystals, the charge density wave (CDW) superstructure induces two nonequivalent sites for Ti dopants. Recently, it has been shown that…
Direct Observation of Long-range field-effect from gate tuning of non-local conductivity
Lin Wang, Ignacio Gutiérrez-Lezama, Céline Barreteau +3
We report the observation of an unexpected, long-range field-effect in WTe devices, leading to large gate-induced changes of the transport properties of crystals much thicker t…
Fermi arcs and their topological character in the candidate type-II Weyl semimetal MoTe2
A. Tamai, Q. S. Wu, I. Cucchi +9
We report a combined experimental and theoretical study of the candidate type-II Weyl semimetal MoTe2. Using laser-based angle-resolved photoemission we resolve multiple distinct F…
Observation of Large Topologically Trivial Fermi-Arcs in the Candidate Type-II Weyl Semimetal WTe2
F. Y. Bruno, A. Tamai, Q. S. Wu +13
We report angle-resolved photoemission experiments resolving the distinct electronic structure of the inequivalent top and bottom (001) surfaces of WTe2. On both surfaces, we ident…
High-pressure melt growth and transport properties of SiP, SiAs, GeP, and GeAs 2D layered semiconductors
Céline Barreteau, Baptiste Michon, Céline Besnard +1
Silicon and Germanium monopnictides SiP, SiAs, GeP and GeAs form a family of 2D layered semiconductors. We have succeeded in growing bulk single crystals of these compounds by melt…
Short-range phase coherence and origin of the 1T-TiSe2 charge density wave
B. Hildebrand, T. Jaouen, C. Didiot +9
The impact of variable Ti self-doping on the 1T-TiSe2 charge density wave (CDW) is studied by scanning tunneling microscopy. Supported by density functional theory we show that agg…