Publications by authors named "P A Brydon"
Article Synopsis
- Uranium ditelluride (UTe) is considered a top candidate for a -wave superconductor in bulk form, prompting detailed spectroscopic research.
- Conductance measurements were taken through point-contact junctions at low temperatures (down to 250 mK) and high magnetic fields (up to 18 T), utilizing the Blonder-Tinkham-Klapwijk model for analysis.
- The findings indicate a dominant -wave gap function with an amplitude of 0.26 ± 0.06 meV, supporting the idea of spin-triplet pairing in UTe's superconducting state.
Materials with multiple superconducting phases are rare. Here, we report the discovery of two-phase unconventional superconductivity in CeRhAs Using thermodynamic probes, we establish that the superconducting critical field of its high-field phase is as high as 14 tesla, even though the transition temperature is only 0.26 kelvin.
View Article and Find Full Text PDFTime-reversal symmetry-breaking in noncentrosymmetric superconductors.
J Phys Condens Matter
October 2018
In this paper we examine the appearance of time-reversal symmetry-breaking (TRSB) states in the bulk and at the surface of a noncentrosymmetric superconductor. We utilize a Ginzburg-Landau theory, with coefficients derived from a microscopic model of the superconductor. We show that suppression of the triplet order parameter at the surface stabilizes a TRSB state by locally tuning the system into the bulk TRSB phase.
View Article and Find Full Text PDFIn all known fermionic superfluids, Cooper pairs are composed of spin-1/2 quasi-particles that pair to form either spin-singlet or spin-triplet bound states. The "spin" of a Bloch electron, however, is fixed by the symmetries of the crystal and the atomic orbitals from which it is derived and, in some cases, can behave as if it were a spin-3/2 particle. The superconducting state of such a system allows pairing beyond spin-triplet, with higher spin quasi-particles combining to form quintet or septet pairs.
View Article and Find Full Text PDFDoes rectal diclofenac reduce post-ERCP pancreatitis? A district general hospital experience.
Frontline Gastroenterol
January 2018
Introduction: There is controversy in the literature recently regarding the efficacy of rectal non-steroidal anti-inflammatory drugs (NSAID) to prevent post-ERCP pancreatitis (PEP). The aim of this study was to compare the incidence of PEP in three distinct groups of patients at the Royal United Hospital, Bath: no use of rectal diclofenac, selective use and blanket use without contraindication.
Method: Readmission data, blood results, radiology reports and discharge summaries were used to identify patients with PEP from August 2010 to December 2015.