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1.
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Microscopic insight by nuclear hyperfine methods on ferroic Perovskites
/ Lopes, A M L ; Schell, J H ; Carbonari, A W ; Amaral, V S ; Araujo, J P ; Lupascu, D C ; Dang, T T ; Yap, I C J ; Burimova, A ; Correia, J G et al.
CERN-INTC-2023-045 ; INTC-CLL-054.
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2023.
Fulltext - Original Document (INTC-P-663)
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2.
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Direct evidence of Be as an amphoteric dopant in GaN
/ Wahl, U. (IST, Lisbon) ; Correia, J. G. (IST, Lisbon) ; Costa, A. R. G. (KU Leuven) ; Lima, T. A. L. (KU Leuven) ; Moens, J. (KU Leuven) ; Kappers, M. J. (Cambridge U.) ; da Silva, M. R. (Aveiro U., CICECO) ; Pereira, L. M. C. (KU Leuven) ; Vantomme, A. (KU Leuven)
/IS634 Collaboration
The interest in Be as an impurity in GaN stems from the challenge to understand why GaN can be doped p type with Mg, while this does not work for Be. While theory has actually predicted an acceptor level for Be that is shallower than Mg, it was also argued that Be is not a suitable acceptor because its am-photeric nature, i.e. [...]
2022
- Published in : Phys. Rev. B 105 (2022) 184112
Postprint from Phys. Rev. B 105 (2022) 184112: PDF; Supplemental Material from Phys. Rev. B 105 (2022) 184114: PDF;
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3.
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A Next-Generation Liquid Xenon Observatory for Dark Matter and Neutrino Physics
/ Aalbers, J. (SLAC ; KIPAC, Menlo Park) ; AbdusSalam, S.S. (Shahid Beheshti U.) ; Abe, K. (Kamioka Observ. ; Tokyo U., IPMU) ; Aerne, V. (Zurich U.) ; Agostini, F. (U. Bologna, DIFA ; INFN, Bologna) ; Maouloud, S. Ahmed (Paris U., VI-VII) ; Akerib, D.S. (SLAC ; KIPAC, Menlo Park) ; Akimov, D.Yu. (Moscow Phys. Eng. Inst.) ; Akshat, J. (Purdue U.) ; Musalhi, A.K. Al (Oxford U.) et al.
The nature of dark matter and properties of neutrinos are among the most pressing issues in contemporary particle physics. The dual-phase xenon time-projection chamber is the leading technology to cover the available parameter space for Weakly Interacting Massive Particles (WIMPs), while featuring extensive sensitivity to many alternative dark matter candidates. [...]
arXiv:2203.02309; INT-PUB-22-003; FERMILAB-PUB-22-112-PPD-QIS-T.-
2022-12-15 - 77 p.
- Published in : J. Phys. G 50 (2023) 013001
Fulltext: 2203.02309 - PDF; jt - PDF; Fulltext from Publisher: PDF; External link: Fermilab Library Server
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4.
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5.
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6.
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Lattice sites of implanted Na in GaN and AlN in comparison to other light alkalis and alkaline earths
/ Wahl, Ulrich (Universidade de Lisboa (PT)) ; David Bosne, Eric (Universidade de Lisboa (PT)) ; Amorim, Lígia (KU Leuven) ; Granadeiro Costa, Angelo Rafael (Universidade de Lisboa (PT)) ; De Vries, Bart (KU Leuven) ; Martins Correia, Joao (Universidade de Lisboa (PT)) ; da Silva, Manuel Ribeiro (CICECO Aveiro) ; Da Costa Pereira, Lino Miguel (KU Leuven (BE)) ; Vantomme, André (KU Leuven)
/IS634 Collaboration
The lattice location of ion implanted radioactive 24Na (t1/2=14.96 h) in GaN and AlN was determined using the emission channeling technique at the ISOLDE/CERN facility. In the room temperature as-implanted state in both GaN and AlN, the majority of the sodium atoms are found on interstitial sites near the octahedral position, with a minority on cation Ga or Al substitutional sites. [...]
CERN-ISOLDE-2021-003.-
2020 - 12 p.
- Published in : J. Appl. Phys. 128 (2020) 045703
Postprint: PDF; Supplemental Material: PDF;
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7.
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Lattice location study of low-fluence ion-implanted 124In in 3C-SiC
/ Costa, A. R. G. ; Wahl, U. ; Correia, J. G. ; David-Bosne, E. ; Augustyns, V. ; Lima, T. A. L. ; Silva, D. J. ; da Silva, M. R. ; Bharuth-Ram, K. ; Pereira, L. M. C.
We report on the lattice location of low-fluence ion implanted 124In in single-crystalline 3C-SiC by means of the emission channeling technique using radioactive isotopes produced at the ISOLDE/CERN facility. In the sample implanted at room temperature to a fluence of 4 × 1012 cm−2, 60(9)% of the In atoms were found slightly displaced (0.12–0.20 Å) from substitutional Si sites, with the remainder occupying sites of low crystallographic symmetry, the so-called random sites. [...]
2019
- Published in : Journal of Applied Physics 125 (2019) 215706
Fulltext: PDF;
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8.
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Lattice sites of ion-implanted Mn, Fe and Ni in 6H-SiC
/ Costa, A R G (IST, Lisbon (main)) ; Wahl, U (IST, Lisbon (main)) ; Correia, J G (IST, Lisbon (main)) ; David-Bosne, E (IST, Lisbon (main)) ; Amorim, L M (Leuven U.) ; Augustyns, V (Leuven U.) ; Silva, D J (Porto U., Astron. Dept.) ; da Silva, M R (Lisbon U., CFNUL) ; Pereira, L M C (Leuven U.)
/ISOLDE
Using radioactive isotopes produced at the CERN-ISOLDE facility, the lattice location of the implanted transition metal (TM) ions $^56$Mn, $^59$Fe and $^65$Ni in n-type single-crystalline hexagonal 6H-SiC was studied by means of the emission channeling technique. TM probes on carbon coordinated tetrahedral interstitial sites ($T_C$) and on substitutional silicon sites ($S_{Si,h+k}$) were identified. [...]
2017 - 10 p.
- Published in : Semicond. Sci. Technol. 33 (2017) 015021
Fulltext: PDF;
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9.
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Lattice location of implanted transition metals in 3C–SiC
/ Granadeiro Costa, Angelo Rafael (Universidade de Lisboa (PT)) ; Wahl, Ulrich (Universidade de Lisboa (PT)) ; Martins Correia, Joao (Universidade de Lisboa (PT)) ; David Bosne, Eric (Universidade de Lisboa (PT)) ; Amorim, Lígia (KU Leuven (BE)) ; Silva, Daniel (Universidade do Porto (PT)) ; Castro Ribeiro Da Silva, Manuel (Universidade de Lisboa (PT)) ; Bharuth-Ram, Krishanlal (University of Kwazulu - Natal (ZA)) ; Da Costa Pereira, Lino Miguel (KU Leuven (BE))
/EC-SLI Collaboration
We have investigated the lattice location of implanted transition metal (TM) 56Mn, 59Fe and 65Ni ions in undoped single-crystalline cubic 3C–SiC by means of the emission channeling technique using radioactive isotopes produced at the CERN-ISOLDE facility. We find that in the room temperature as-implanted state, most Mn, Fe and Ni atoms occupy carbon-coordinated tetrahedral interstitial sites (TC). [...]
CERN-OPEN-2017-022.-
Lisboa : Instituto Superior Técnico, 2017 - 11 p.
- Published in : J. Phys. D 50 (2017) 215101
Preprint: PDF;
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10.
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Versatile Ion-polarized Techniques On-line (VITO) experiment at ISOLDE-CERN
/ Stachura, M (CERN) ; Gottberg, A (CERN) ; Johnston, K (CERN ; Saarland U.) ; Bissell, M L (Leuven U.) ; Garcia Ruiz, R F (Leuven U.) ; Martins Correia, J (IST/ITN, Lisbon) ; Granadeiro Costa, A R (IST/ITN, Lisbon) ; Dehn, M (Munich, Tech. U.) ; Deicher, M (Saarland U.) ; Fenta, A (U. Aveiro (main)) et al.
The VITO (Versatile Ion-polarized Techniques Online) project is a new experimental setup at the ISOLDE facility at CERN. VITO is a dedicated beam line for producing laser-induced spin-polarized beams of both, atoms and ions, and it has been commissioned in response to the continuously growing demand for the use of spin-polarized beams. [...]
2016 - 5 p.
- Published in : Nucl. Instrum. Methods Phys. Res., B 376 (2016) 369-373
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