Zobrazeno 1 - 10
of 75
pro vyhledávání: '"Karner, Victoria"'
Autor:
Thoeng, Edward, Asaduzzaman, Md., Kolb, Philipp, McFadden, Ryan M. L., Morris, Gerald D., Ticknor, John O., Dunsiger, Sarah R., Karner, Victoria L., Fujimoto, Derek, Junginger, Tobias, Kiefl, Robert F., MacFarlane, W. Andrew, Li, Ruohong, Saminathan, Suresh, Laxdal, Robert E.
Publikováno v:
Sci. Rep. 14, 21487 (2024)
We report direct measurements of the magnetic field screening at the limits of the Meissner phase for two superconducting Nb samples. The samples are processed with two different surface treatments that have been developed for superconducting radio-f
Externí odkaz:
http://arxiv.org/abs/2405.05451
Autor:
Ticknor, John O., Adelman, Jonah R., Chatzichristos, Aris, Dehn, Martin H., Egoriti, Luca, Fujimoto, Derek, Karner, Victoria L., Kiefl, Robert F., Levy, C. D. Philip, Li, Ruohong, McFadden, Ryan M. L., Morris, Gerald D., Oudah, Mohamed, Stachura, Monika, Thoeng, Edward, MacFarlane, W. Andrew
Publikováno v:
Phys. Rev. B 108, 195437 (2023)
We report $\beta$-detected nuclear magnetic resonance of ultra-dilute $^{8}$Li$^{+}$ implanted in highly oriented pyrolytic graphite (HOPG). The absence of motional narrowing and diffusional spin-lattice relaxation implies Li$^+$ is not appreciably m
Externí odkaz:
http://arxiv.org/abs/2301.07821
Autor:
Thoeng, Edward, McFadden, Ryan M. L., Saminathan, Suresh, Morris, Gerald D., Kolb, Philipp, Matheson, Ben, Asaduzzaman, Md, Baartman, Richard, Dunsiger, Sarah R., Fujimoto, Derek, Junginger, Tobias, Karner, Victoria L., Kiy, Spencer, Li, Ruohong, Stachura, Monika, Ticknor, John O., Kiefl, Robert F., MacFarlane, W. Andrew, Laxdal, Robert E.
Publikováno v:
Rev. Sci. Instrum. 94, 023305 (2023)
A new high field spectrometer has been built to extend the capabilities of the $\beta$-detected nuclear magnetic resonance ($\beta$-NMR) facility at TRIUMF. This new beamline extension allows $\beta$-NMR spectroscopy to be performed with fields up to
Externí odkaz:
http://arxiv.org/abs/2211.15619
Autor:
Adelman, Jonah R., Fujimoto, Derek, Dehn, Martin H., Dunsiger, Sarah R., Karner, Victoria L., Levy, C. D. Philip, Li, Ruohong, McKenzie, Iain, McFadden, Ryan M. L., Morris, Gerald D., Pearson, Matthew R., Stachura, Monika, Thoeng, Edward, Ticknor, John O., Ohashi, Naoki, Kojima, Kenji M., MacFarlane, W. Andrew
Publikováno v:
Phys Rev. B 106, 035205 (2022)
We report on the stability and magnetic state of ion implanted $^8$Li in single crystals of the semiconductor ZnO using $\beta$-detected nuclear magnetic resonance. At ultradilute concentrations, the spectra reveal distinct Li sites from 7.6 to 400 K
Externí odkaz:
http://arxiv.org/abs/2109.08637
Autor:
McFadden, Ryan M. L., Chatzichristos, Aris, Cortie, David L., Fujimoto, Derek, Hor, Yew San, Ji, Huiwen, Karner, Victoria L., Kiefl, Robert F., Levy, C. D. Philip, Li, Ruohong, McKenzie, Iain, Morris, Gerald D., Pearson, Matthew R., Stachura, Monika, Cava, Robert J., MacFarlane, W. Andrew
Publikováno v:
Phys. Rev. B 102, 235206 (2020)
We report $\beta$-detected nuclear magnetic resonance ($\beta$-NMR) measurements in Bi$_{2}$Se$_{3}$:Ca (BSC) and Bi$_{2}$Te$_{3}$:Mn (BTM) single crystals using $^{8}$Li$^{+}$ implanted to depths on the order of 100 nm. Above $\sim 200$ K, spin-latt
Externí odkaz:
http://arxiv.org/abs/1911.12212
Autor:
Li, Ruohong, Lassen, Jens, Levy, C.D. Philip, Roman, Mathias, Teigelhöfer, Andrea, Karner, Victoria, Morris, Gerald D., Stachura, Monika, Gottberg, Alexander
Publikováno v:
In Nuclear Inst. and Methods in Physics Research, B August 2023 541:228-231
Autor:
Ticknor, John O., Umegaki, Izumi, McFadden, Ryan M. L., Chatzichristos, Aris, Fujimoto, Derek, Karner, Victoria L., Kiefl, Robert F., Kobayashi, Shintaro, Levy, C. D. Phillip, Li, Ruohong, Morris, Gerald D., Pearson, Matthew R., Yoshimura, Kazuyoshi, Sugiyama, Jun, MacFarlane, W. Andrew
Publikováno v:
RSC Adv. 10, 8190 (2020)
We have studied a mosaic of 1T-CrSe$_2$ single crystals using $\beta$-detected nuclear magnetic resonance of $^{8}$Li from 4 to 300 K. We identify two broad resonances that show no evidence of quadrupolar splitting, indicating two magnetically distin
Externí odkaz:
http://arxiv.org/abs/1908.05421
Autor:
Fujimoto, Derek, McFadden, Ryan M. L., Dehn, Martin H., Petel, Yael, Chatzichristos, Aris, Hemmingsen, Lars, Karner, Victoria L., Kiefl, Robert F., Levy, C. D. Philip, McKenzie, Iain, Michal, Carl A., Morris, Gerald D., Pearson, Matthew R., Szunyogh, Daniel, Ticknor, John O., Stachura, Monika, MacFarlane, W. Andrew
Publikováno v:
Chem. Mater. 31, 9346 (2019)
We demonstrate the application of implanted-ion $\beta$-detected NMR as a probe of ionic liquid molecular dynamics through the measurement of $^8$Li spin-lattice relaxation (SLR) and resonance in 1-ethyl-3-methylimidazolium acetate. The motional narr
Externí odkaz:
http://arxiv.org/abs/1907.03684
Autor:
Karner, Victoria L., Chatzichristos, Aris, Cortie, David L., Dehn, Martin H., Foyevtsov, Oleksandr, Foyevtsova, Kateryna, Fujimoto, Derek, Kiefl, Robert F., Levy, C. D. Philip, Li, Ruohong, McFadden, Ryan M. L., Morris, Gerald D., Pearson, Matthew R., Stachura, Monika, Ticknor, John O., Cristiani, Georg, Logvenov, Gennady, Wrobel, Friedrike, Keimer, Bernhard, Zhang, Junjie, Mitchell, John F., MacFarlane, W. Andrew
Publikováno v:
Phys. Rev. B 100, 165109 (2019)
We report $\beta$-detected NMR of ion-implanted $^{8}$Li in a single crystal and thin film of the strongly correlated metal LaNiO$_{3}$. In both samples, spin-lattice relaxation measurements reveal two distinct local metallic environments, as is evid
Externí odkaz:
http://arxiv.org/abs/1906.07878
Autor:
McFadden, Ryan M. L., Chatzichristos, Aris, Chow, Kim H., Cortie, David L., Dehn, Martin H., Fujimoto, Derek, Hossain, Masrur D., Ji, Huiwen, Karner, Victoria L., Kiefl, Robert F., Levy, C. D. Philip, Li, Ruohong, McKenzie, Iain, Morris, Gerald D., Ofer, Oren, Pearson, Matthew R., Stachura, Monika, Cava, Robert J., MacFarlane, W. Andrew
Publikováno v:
Phys. Rev. B 99, 125201 (2019)
We report measurements on the high temperature ionic and low temperature electronic properties of the 3D topological insulator Bi$_2$Te$_2$Se using ion-implanted $^8$Li $\beta$-detected nuclear magnetic relaxation and resonance. With implantation ene
Externí odkaz:
http://arxiv.org/abs/1810.07879