Projects per year
Abstract
The magnetism in the ferromagnetic superconductor UCoGe has been studied using a combination of magnetic Compton scattering, bulk magnetization, x-ray magnetic circular dichroism, and electronic structure calculations, in order to determine the spin and orbital moments. The experimentally observed total spin moment Ms was found to be −0.24±0.05μB at 5 T. By comparison with the total moment of 0.16±0.01μB, the orbital moment Ml was determined to be 0.40±0.05μB. The U and Co spin moments were determined to be antiparallel. We find that the U 5ƒ electrons carry a spin moment of Us≈−0.30μB and that there is a Co spin moment of Cos≈0.06μB induced via hybridization. The ratio Ul/Us, of −1.3±0.3, shows the U moment to be itinerant. In order to ensure an accurate description of the properties of 5ƒ systems, and to provide a critical test of the theoretical approaches, it is clearly necessary to obtain experimental data for both the spin and orbital moments, rather than just the total magnetic moment. This can be achieved simply by measuring the spin moment with magnetic Compton scattering and comparing this to the total moment from bulk magnetization.
Original language | English |
---|---|
Article number | 121107(R) |
Number of pages | 5 |
Journal | Physical Review B: Condensed Matter and Materials Physics |
Volume | 92 |
Issue number | 12 |
DOIs | |
Publication status | Published - 14 Sept 2015 |
Bibliographical note
Date of Acceptance: 26/01/2015Fingerprint
Dive into the research topics of 'Determination of spin and orbital magnetization in the ferromagnetic superconductor UCoGe'. Together they form a unique fingerprint.Projects
- 1 Finished
-
Fermiology and spin densities from high energy X-Ray scattering
Dugdale, S. B. (Principal Investigator)
3/10/11 → 3/12/15
Project: Research
Datasets
-
UCoGe
Ernsting, D. (Creator), Millichamp, T. (Creator), Billington, D. (Creator) & Dugdale, S. (Creator), University of Bristol, 1 Sept 2015
DOI: 10.5523/bris.x2ektpz38mnn15pljhml1kkqc, http://data.bris.ac.uk/data/dataset/x2ektpz38mnn15pljhml1kkqc
Dataset