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PhD Studentship – New methods for simulations of complex actinide materials based on relativistic linear-scaling quantum mechanics

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  • Full or part time
    Prof C K Skylaris
  • Application Deadline
    No more applications being accepted

Project Description

Applications will be considered in the order that they are received, and the position will be considered filled when a suitable candidate has been identified.

The project: This is a 4-year PhD project, funded in collaboration with industry. It includes a one-year placement in Oxford, during which in-depth training will be provided in fundamental theory, software development, and computational chemistry simulations. This training will be delivered by academics from the Universities of Southampton and Oxford via the Centre for Doctoral Training in Theory and Modelling in the Chemical Sciences. Successful completion of year one will lead to the award of an Oxford MSc, and progression to a 3-year PhD research project, which will be based in Southampton, and will include close collaboration with the industrial sponsors.

This project will offer unique exposure to both academic and industrial research environments and is ideally suited to applicants who wish to make an impact in problems of real practical relevance.

New methods for simulations of complex actinide materials based on relativistic linear-scaling quantum mechanics

The computational simulation of chemical reactions in materials requires an accurate and explicit description of their electrons. This can be achieved by quantum mechanical calculations from first principles, with methods such as Density Functional Theory (DFT). DFT calculations have typically been limited to tens of atoms due to the steep increase of the computational effort, which scales with the third power in the number of atoms. Recent developments in the theory and methods have led to “linear-scaling” reformulations of DFT, which allow calculations with thousands of atoms. While quantum mechanics from first principles does not depend on empirical parameters and as a result, it can be used on any material, it is no longer chemically accurate when applied to materials containing heavy f-block elements such as actinides. The reason for this failure is the lack of essential relativistic corrections needed to provide an accurate description of the electronic structure as relativistic effects heavily influence the geometries and chemistry of these compounds and cannot be ignored. Various levels of such relativistic corrections have been implemented in conventional DFT programs but much less is available within linear-scaling DFT formulations and as a result, simulations on complex actinide-containing materials are very challenging.

The goal of this PhD project is to address this grand challenge by developing and validating within the ONETEP linear-scaling DFT program the capabilities that are required for accurate large-scale DFT calculations on actinide compounds. This will involve the implementation of a hierarchy of relativistic methods of increasing sophistication, which will need to be reformulated and expressed within the localised non-orthogonal orbital framework on which the ONETEP method is based. The developed methodologies will be validated against experimental and computational data – provided by the industry partners. Many of these developments will be novel in the area of DFT codes for large-scale calculations and therefore this project represents a great opportunity to make an impact in the field of electronic structure theory method development.

This project will be carried out in the group of Professor Chris-Kriton Skylaris at the University of Southampton and will be co-supervised by Professor Skylaris and by industrial collaborators. If you wish to discuss any details of the project informally, please contact Professor Chris-Kriton Skylaris, Email: [Email Address Removed] , Tel: +44 (0) 2380 59 9381.

Candidate requirements:


UK citizen fully funded
Successful applicants to TMCS typically hold a first class honours degree (or equivalent) in Chemistry or a closely related discipline.

Contacts:


Project queries: Professor Chris-Kriton Skylaris, [Email Address Removed]
TMCS queries: [Email Address Removed]

Funding Notes

Full funding of fees and stipend for 4 years. Applications are accepted from self-funded international applicants, but funding restricted to UK applicants only.

How good is research at University of Southampton in Chemistry?

FTE Category A staff submitted: 44.80

Research output data provided by the Research Excellence Framework (REF)

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