Dr Peter Baker

Instrument Scientist

Location R 3, UG. 04
Rutherford Appleton Laboratory
E-mail peter.baker@stfc.ac.uk
Telephone (office) +44 (0) 1235 445350
Mobile (short code) 1166 (only works when dialed on site)

Introduction and profile

I'm a member of the Muon Group at ISIS and one of the instrument scientists responsible for the MuSR spectrometer. Before starting at ISIS I was a graduate student and then post-doctoral researcher at Oxford University.

Research and development interests

My research focuses on magnetism and superconductivity, but I have also been involved with experiments on polymer dynamics and muon fluorine bound states. In addition to working with muons, I carry out magnetic susceptibility, resistivity, and heat capacity experiments.

In magnetism I have investigated ferromagnets and antiferromagnets of varying dimensionality, spin-Peierls compounds, spin liquids, and spin glasses. My work on superconductors has focussed on a series of intercalated cuprate superconductors where organic molecules can be placed between the copper oxide planes to change the layer spacing, and more recently on a variety of iron-based materials such as SmFeAsO and LiFeAs. 

Recent publications:

Muon-spin relaxation and heat capacity measurements on the magnetoelectric and multiferroic pyroxenes LiFeSi2O6 and NaFeSi2O6

PJ Baker et al., Phys. Rev. B 81, 214403 (2010)

Tuning the Interlayer Spacing of High-Tc Bi-Based Superconductors by Intercalation: Measuring the Penetration Depth and the Two-Dimensional Superfluid Density

PJ Baker et al., Phys. Rev. Lett. 102, 087002 (2009)

Two-dimensional magnetism in the pnictide superconductor parent material SrFeAsF probed by muon-spin relaxation

PJ Baker et al., Phys. Rev. B 79, 060402(R) (2009)

Heat capacity measurements on FeAs-based compounds: a thermodynamic probe of electronic and magnetic states

P. J. Baker et al., New. J. Phys. 11, 025010 (2009)

Polymorphism control of superconductivity and magnetism in Cs3C60 close to the Mott transition

AY Ganin, Y Takabayashi, et al., Nature 466, 221 (2010)

See also: Frustrated magnetism in superconducting fullerides.

Coexistence of static magnetism and superconductivity in SmFeAsO1-xFx as revealed by muon spin rotation

AJ Drew, Ch. Niedermayer, PJ Baker et al., Nature Materials 8, 310 (2009)

Structure, antiferromagnetism, and superconductivity of the layered iron arsenide NaFeAs

DR Parker, MJ Pitcher, PJ Baker et al., Chem. Comm. 2189 (2009)

Full list of my publications.

Skills, expertise and qualifications

DPhil in Condensed Matter Physics, Oxford 2008. "Tuning the dimensionality and interactions in transition metal oxides: a muSR study"

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