- 2025
PublicationMachine Learning-Driven First-Principles Modeling of Far-Infrared Materials
Ritwik Das. PhD thesis, Université Paris-Saclay, C2N (CNRS). NNT 2025UPAST100
PhysicsAI/MLBayesian optimizationGaussian processesMachine learningDFT+UHybrid functionalsGWInSbInAsSb alloysHeterointerfacesBand alignmentVirtual crystal approximationAlloysInfrared materialsSemiconductors
- PhD, completed 2025
ProjectMachine-learning-driven modeling of far-infrared semiconductors
InSb, InAs, InAsSb alloys and CdTe/InSb heterointerfaces from first principles.
PhysicsElectronicsSemiconductorsInfrared materialsInSbInAsSb alloysHeterointerfacesAlloysDFTDFT+UHybrid functionalsGWDFPTBand alignmentBayesian optimizationMachine learning
- 2025
PublicationHigh-fidelity electronic structure and properties of InSb: G0W0 and Bayesian-optimized hybrid functionals and DFT + U approaches
Ritwik Das, Anne-Sophie Grimault-Jacquin, Frédéric Aniel. Physical Review B 112, 075136
PhysicsAI/MLInSbSemiconductorsInfrared materialsGWHybrid functionalsDFT+UBayesian optimizationMachine learning
- 2024
Publication - 2023
TalkBayesian Machine: Optimizing the Hubbard U Parameter in DFT+U With Machine Learning
Conference contribution, European Materials Research Society (E-MRS) Conference
- 2023–2024
ProjectBMach, Bayesian optimization of Hubbard U
A Bayesian framework that calibrates Hubbard U and hybrid-functional parameters at a small fraction of the cost of direct high-level methods.
AI/MLPhysicsBayesian optimizationGaussian processesMachine learningDFT+UHybrid functionals