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PhD Studentship: Detecting Fractionalization in Strongly Correlated Magnets

Loughborough University

Qualification Type: PhD
Location: Loughborough
Funding for: UK Students, EU Students, International Students
Funding amount: The studentship is for 3 years and provides a tax-free stipend of £15,609 per annum for the duration of the studentship plus tuition fees at the UK rate.
Hours: Full Time
Placed On: 11th January 2022
Closes: 16th March 2022
Reference: IR/PH/2022
 

Application details:

Reference number: IR/PH/2022

Start date of studentship: 1st October 2022

Closing date of advert: 16th March 2022

Interview date: February-March 2022

Supervisors:

Primary supervisor: Dr Ioannis Rousochatzakis

Secondary supervisor: Prof. Joseph Betouras

Short Introductory Paragraph:

The project goal is to investigate realistic models of frustrated magnets of current interest and explore signatures of spin liquidity. Understanding the phenomenology of these materials and their proximity to spin liquid phases is indispensable for their future exploitation in quantum technologies and computing applications. The project will provide opportunities to endeavour into a very vibrant field of condensed matter research, acquire expertise in numerical methods (such as Monte Carlo, multiboson expansions, exact diagonalizations and typicality), and work on experimentally driven problems of growing interest.

Loughborough University is a top-ten rated university in England for research intensity (REF2014). In choosing Loughborough for your research, you’ll work alongside academics who are leaders in their field. You will benefit from comprehensive support and guidance from our Graduate School, including tailored careers advice, to help you succeed in your research and future career.

Find out more:

http://www.lboro.ac.uk/study/postgraduate/supporting-you/research/

https://www.lboro.ac.uk/services/hr/jobs/equality-diversity/flexible/

https://www.lboro.ac.uk/news-events/news/2019/october/school-of-science-receives-athena-swan-award/ 

Full Project Detail:

According to Boltzmann statistics, matter tends to maximise its entropy at high temperatures and minimize its energy at low temperatures. A ferromagnet offers the simplest scenario for this battle between energy and entropy [1]: Below a characteristic temperature TC, the underlying array of spins minimize their energy by aligning along a common direction, whereas above TC spins fluctuate in random directions. Strongly correlated magnets offer a much richer scenario, as their energy can be minimised in an infinite number of ways. At low temperatures, such systems fluctuate over a macroscopic number of competing states and can thus evade long range ordering, opening the door for more exotic phases with long-range entanglement and fractionalized excitations [2,3]. This project will explore the experimental signatures of such systems using realistic microscopic models of materials of current interest, using a mix of analytical and numerical techniques [4].

References:

  1. L. Onsager, Phys. Rev.65, 117 (1944)
  2. L. Balents, Nature 464, 199 (2010)
  3. I. Rousochatzakis, Y. Sizyuk, N. B. Perkins, Nat. Commun. 9, 1575 (2018)
  4. I. Rousochatzakis, S. Kourtis, J. Knolle, R. Moessner, N. B. Perkins, PRB 100, 045117 (2019)

Find out more:

https://www.lboro.ac.uk/departments/physics/staff/academic/ioannis-rousochatzakis/

http://www.lboro.ac.uk/science/study/postgraduate-research/studentships/

Entry requirements:

Applicants should have, or expect to achieve, at least a 2:1 Honours degree (or equivalent) in Physics or a related subject. A relevant Master’s degree and/or experience in one or more of the following will be an advantage: Physics.

Funding information:

Please note that studentships will be awarded on a competitive basis to applicants who have applied to this project and other advertised projects within the School. Funding decisions will not be confirmed until early 2022. The studentship is for 3 years and provides a tax-free stipend of £15,609 per annum for the duration of the studentship plus tuition fees at the UK rate.  International (including EU) students may apply however the total value of the studentship will cover the International Tuition Fee Only.

Contact details:

Name: Ioannis Rousochatzakis

Email address: I.Rousochatzakis@lboro.ac.uk

Telephone number: +44-15-09-223303

How to apply:

All applications should be made online at http://www.lboro.ac.uk/study/apply/research/. Under programme name, select Physics.

Please quote reference number: IR/PH/2022

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