Zobrazeno 1 - 10
of 20
pro vyhledávání: '"N N, Kuzma"'
Publikováno v:
Solid State Communications. 119:217-227
In the quest to understand (and to make use of) spin effects in mesoscopic systems, the development of new experimental techniques will play a key role. In this review, we will describe some recent work using Optically Pumped Nuclear Magnetic Resonan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a4ed23c9ce0d841dbc4901e506d3f73
https://doi.org/10.1016/s0038-1098(01)00235-6
https://doi.org/10.1016/s0038-1098(01)00235-6
Publikováno v:
Physical Review Letters. 86:5353-5356
Optically pumped nuclear magnetic resonance measurements of 71Ga spectra were carried out in an n-doped GaAs/Al(0.1)Ga0.9As multiple quantum well sample near the integer quantum Hall ground state nu = 1. As the temperature is lowered (down to T appro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::14849492d9c3ce56c973a81faa399b4d
https://doi.org/10.1103/physrevlett.86.5353
https://doi.org/10.1103/physrevlett.86.5353
Publikováno v:
Physical Review Letters. 83:5074-5077
The Knight shift and the nuclear spin-lattice relaxation rate 1/T1 of Ga-71 nuclei are measured in GaAs quantum wells at Landau level filling factor nu = 1/2 using optically pumped NMR. The temperature dependences of these data are compared with pred
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d7ceec15d205cd7213b8b09f2f11a1ec
https://doi.org/10.1103/physrevlett.83.5074
https://doi.org/10.1103/physrevlett.83.5074
Publikováno v:
Physica B: Condensed Matter. :113-120
We review our recent measurements of the 71Ga Knight shift and linewidth in two different electron-doped multiple quantum well samples using optically pumped NMR. These data are the first direct measurements of the electron spin polarization, P (ν,T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::02d711c30b6df6a71b22246bf6c134e7
https://doi.org/10.1016/s0921-4526(98)00576-6
https://doi.org/10.1016/s0921-4526(98)00576-6
Publikováno v:
Physical Review Letters. 81:673-676
The Knight shift of Ga-71 nuclei is measured in two different electron-doped multiple quantum well samples using optically pumped NMR. These data are the first direct measurements of the electron spin polarization, P(nu,T)= /max , near nu=1/3. The P(
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5d877dfaa5eaf8d8fac7ca06ff55fa00
https://doi.org/10.1103/physrevlett.81.673
https://doi.org/10.1103/physrevlett.81.673
Autor:
R K, Ghosh, S J, Kadlecek, J H, Ardenkjaer-Larsen, B M, Pullinger, G, Pileio, M H, Levitt, N N, Kuzma, R R, Rizi
Publikováno v:
Magnetic resonance in medicine. 66(4)
The development of hyperpolarized tracers has been limited by short nuclear polarization lifetimes. The dominant relaxation mechanism for many hyperpolarized agents in solution arises from intramolecular nuclear dipole-dipole coupling modulated by mo
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https://explore.openaire.eu/search/publication?articleId=pmid________::24ce4778ccc5a534bc73e523a861e06d
https://pubmed.ncbi.nlm.nih.gov/21928358
https://pubmed.ncbi.nlm.nih.gov/21928358
Publikováno v:
Physical Review A. 72
Coherent population trapping (CPT) signals can be optimized with amplitude-modulated pumping light. As shown theoretically and experimentally in this paper, the optimum wave forms produce strong CPT signals at both low buffer-gas pressures, where the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d07274c99b740b68fee80016f397f707
https://doi.org/10.1103/physreva.72.033417
https://doi.org/10.1103/physreva.72.033417
Publikováno v:
Physical Review Letters. 93
A new optical pumping method, "push-pull pumping," can produce very nearly pure, coherent superposition states between the initial and the final sublevels of the important field-independent 0-0 clock resonance of alkali-metal atoms. The key requireme
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::572952bc05681a5463b7c1e018722c3e
https://doi.org/10.1103/physrevlett.93.160802
https://doi.org/10.1103/physrevlett.93.160802
Publikováno v:
IEEE International Frequency Control Sympposium and PDA Exhibition Jointly with the 17th European Frequency and Time Forum, 2003. Proceedings of the 2003.
We consider advantages of the "end" resonances for the miniaturized alkali vapor-cell atomic clock, namely a higher signal-to-noise ratio (SNR) and a narrower linewidth at high vapor densities. We report our preliminary observations of the unusual ph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a8dea5973b777e70c40e018a06d4f36b
https://doi.org/10.1109/freq.2003.1274982
https://doi.org/10.1109/freq.2003.1274982
Publikováno v:
Physical Review A. 69
We report the first measurement of the spin-exchange rate coefficient for binary collisions between Cs and $^{129}\mathrm{Xe}$ atoms in the temperature range $110lTl150\phantom{\rule{0.2em}{0ex}}\ifmmode^\circ\else\textdegree\fi{}\mathrm{C}$ at a $9.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb319665981a5095c09d057e7c8e39f7
https://doi.org/10.1103/physreva.69.061401
https://doi.org/10.1103/physreva.69.061401