Zobrazeno 1 - 10
of 25
pro vyhledávání: '"W. F. Holmes-Hewett"'
Autor:
W. F. Holmes-Hewett, K. Van Koughnet, J. D. Miller, E. X. M. Trewick, B. J. Ruck, H. J. Trodahl, R. G. Buckley
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-10 (2023)
Abstract We investigate the previously observed superconductivity in ferromagnetic SmN in the context of the breakdown of order between two magnetic phases. Nitrogen vacancy doped SmN $$_{1-\delta }$$ 1 - δ is a semiconductor which lies in the inter
Externí odkaz:
https://doaj.org/article/33b45284da8149e581a76f02ab613d9a
Autor:
W. F. Holmes-Hewett, R. G. Buckley, T. J. Butler, C. Pot, K. Van Koughnet, B. J. Ruck, H. J. Trodahl
Publikováno v:
AIP Advances, Vol 12, Iss 7, Pp 075120-075120-4 (2022)
Far infrared measurements of the absorption into the IR-active TO(Γ) mode are reported for a selection of the rare-earth mononitrides. The frequencies harden as anticipated by ≈15% as the lattice constant shrinks by ≈6% from SmN to LuN, though t
Externí odkaz:
https://doaj.org/article/c71cf52769f445f2b7da21fbcd3b5531
Autor:
S. Devese, K. Van Koughnet, R. G. Buckley, F. Natali, P. P. Murmu, E.-M. Anton, B. J. Ruck, W. F. Holmes-Hewett
Publikováno v:
AIP Advances, Vol 12, Iss 3, Pp 035108-035108-6 (2022)
We report electrical transport and optical spectroscopy measurements on LuN thin films variously doped with nitrogen vacancies along with the computed band structures of stoichiometric and nitrogen vacancy doped LuN. LuN has been the subject of sever
Externí odkaz:
https://doaj.org/article/5d282d1ddbea4b31bbac2627db861a0b
Publikováno v:
AIP Advances, Vol 11, Iss 1, Pp 015125-015125-4 (2021)
We report on the effect of the nitrogen to rare earth (N2/RE) flux ratio on the structural, transport, and magnetic properties of samarium nitride (SmN) and dysprosium nitride (DyN) thin films. Both materials display a reduced lattice constant when t
Externí odkaz:
https://doaj.org/article/d6f035bd9e834f76a397b1493e1e5bb3
Autor:
E.-M. Anton, W. F. Holmes-Hewett, J. F. McNulty, F. Natali, F. Bramley, Y. Choi, D. Haskel, B. J. Ruck, H. J. Trodahl
Publikováno v:
AIP Advances, Vol 11, Iss 1, Pp 015348-015348-5 (2021)
GdN and SmN are two of the lanthanide nitrides, most of which are intrinsic ferromagnetic semiconductors. Superlattices comprising the pair offer a unique opportunity to investigate heterojunctions that feature simultaneous conductivity and magnetic
Externí odkaz:
https://doaj.org/article/d3e6f0f0fb38477aac210d82def21c12
Autor:
W. F. Holmes-Hewett
Publikováno v:
Physical Review B. 104
SmN is an intrinsic ferromagnetic semiconductor with electrical transport properties that have been of recent experimental interest. Its conductivity is largely dictated by the concentration of nitrogen vacancies that dope the crystal with electrons.
Publikováno v:
Applied Physics Letters. 119:172406
The remarkable series of intrinsic ferromagnetic semiconductors within the rare-earth nitrides presents both fundamental challenges and technological opportunities with even more offered by alloys among them. Here, we report an initial exploration of
We report the growth of films of the intrinsic ferromagnetic semiconductor NdN, and an investigation of their optical and transport properties. There is clear evidence of a strong anomalous Hall effect as expected from a 4f conduction channel, suppor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::39b18ad7737fd56d5d9252995c77d18d
http://arxiv.org/abs/1910.02163
http://arxiv.org/abs/1910.02163
Publikováno v:
Physical Review B. 99
The rare-earth nitride ferromagnetic semiconductors owe their varying magnetic properties to the progressive filling of the $4f$ shell across the series. Recent electrical transport measurements on samarium nitride, including the observation of super
Publikováno v:
Physical Review B. 98