Two inequivalent sublattices and orbital ordering in MnV2O4 studied by 51V NMR (2009)
Curro, N. J., Reyes, A. P., Kuhns, P. L., Zhou, H. D., ...
We report detailed 51V NMR spectra in a single crystal of MnV2O4. The vanadium spectrum reveals two peaks in the orbitally ordered state, which arise from different internal hyperfine fields at two...
Critical properties of the S=1 spin dimer compound Ba3Mn2O8 (2009)
Suh, S., Al-Hassanieh, K. A., Samulon, E. C., Brooks, J. S., Clark, W. G., Kuhns, P. L., ...
Ba3Mn2O8 is a hexagonally coordinated Mn5+ S=1 spin dimer system with small uniaxial single-ion anisotropy. 135,137Ba NMR spectroscopy is used to establish the lower critical field Hc1 of distinct...
Magnetic Impurities in the Pnictide Superconductor Ba$_{1-x}$K$_{x}$Fe$_{2}$As$_{2}$ (2009)
Mukhopadhyay, Sutirtha, Oh, Sangwon, Mounce, A M, Lee, Moohee, Halperin, W P, Ni, N, ...
NMR measurements have been performed on single crystals of Ba$_{1-x}$K$_{x}$Fe$_2$As$_2$ (x = 0, 0.45) and CaFe$_2$As$_2$ grown from Sn flux. The Ba-based pnictide crystals contain significant...
Dynamical Behavior of Spins in the Rare-Earth Kagom\'{e} Pr$_3$Ga$_5$SiO$_{14}$ (2008)
Lumata, L. L., Besara, T., Hoch, M. J. R., Zhou, H. D., Brooks, J. S., ...
We report on the use of $^{69,71}$Ga nuclear magnetic resonance to probe spin dynamics in the rare-earth kagom\'{e} system Pr$_3$Ga$_5$SiO$_{14}$. We find that the spin-lattice relaxation rate...
Lumata, L. L., Brooks, J. S., Kuhns, P. L., Reyes, A. P., Brown, S. E., Cui, H. B., ...
Complementary $^{77}$Se nuclear magnetic resonance (NMR) and electrical transport have been used to correlate the spin density dynamics with the subphases of the field-induced spin density wave...
Kuehne, H., Grossjohann, S., Brenig, W., Litterst, F. J., Reyes, A. P., ...
We present a 13C-NMR study of the magnetic field driven transition to complete polarization of the S=1/2 antiferromagnetic Heisenberg chain system copper pyrazine dinitrate Cu(C4H4N2)(NO3)2 (CuPzN)....
AC susceptibility and $^{51}$V NMR study of MnV$_2$O$_4$ (2007)
Reyes, A. P., Kuhns, P. L., Curro, N. J., Ramanchandran, V., ...
We report $^{51}$V zero-field NMR of manganese vanadate spinel of MnV$_2$O$_4$, together with both ac and dc magnetization measurements. The field and temperature dependence of ac susceptibilities...
Two-dimensional Vortices in Superconductors (2007)
Chen, Bo, Halperin, W. P., Guptasarma, Prasenjit, Hinks, D. G., Mitrovic, V. F., Reyes, A. P., ...
Superconductors have two key characteristics. They expel magnetic field and they conduct electrical current with zero resistance. However, both properties are compromised in high magnetic fields...
Spin Freezing and Melting in Na$_{0.5}$CoO$_{2}$ (2006)
Imai, T., Ning, F. L., Van Dyken, M., Chou, F. C., Reyes, A. P., Kuhns, P. L.
This paper has been withdrawn. The sample was a mixed phase.
Hidden order and disorder effects in URu2Si2 (2006)
Bernal, O. O., Moroz, M. E., Ishida, K., Murakawa, H., Reyes, A. P., Kuhns, P. L., ...
Zheng, Guo-qing, Kuhns, P. L., Reyes, A. P., Liang, B., Lin, C. T.
We apply strong magnetic fields of H=28.5 \sim 43 T to suppress superconductivity (SC) in the cuprates Bi_{2}Sr_{2-x}La_xCuO_{6+\delta} (x=0.65, 0.40, 0.25, 0.15 and 0), and investigate the low...
Evidence for Skyrmion crystallization from NMR relaxation experiments (2004)
Gervais, G., Stormer, H. L., Tsui, D. C., Kuhns, P. L., Moulton, W. G., Reyes, A. P., ...
A resistively detected NMR technique was used to probe the two-dimensional electron gas in a GaAs/AlGaAs quantum well. The spin-lattice relaxation rate $(1/T_{1})$ was extracted at near complete...
Interplay between the magnetic fluctuations and superconductivity in the lanthanum cuprates (2003)
Teitel'baum, G. B., Kataev, V. E., Vavilova, E. L., Kuhns, P. L., Reyes, A. P., Moulton, W. G.
We report the analysis of the magnetic fluctuations in the superconducing La_{2-x}Sr_xCuO_4 and the related lanthanum cuprates having the different symmetry of the low temperature structure. The NMR...
Magnetic phase separation in La1-xSrxCoO3 by 59Co NMR (2003)
Kuhns, P. L., Hoch, M. J. R., Moulton, W. G., Leighton, C.
59Co NMR measurements on La1-xSrxCoO3 reported here establish unequivocally, for the first time, the coexistence of ferromagnetic regions, spin glass regions, and hole poor low spin regions at all x...
Magnetic field independence of the spin gap in YBa_2Cu_3O_{7-delta} (1998)
Gorny, K., Vyaselev, O. M., Martindale, J. A., Nandor, V. A., Pennington, C. H., Hammel, P. C., ...
We report, for magnetic fields of 0, 8.8, and 14.8 Tesla, measurements of the temperature dependent ^{63}Cu NMR spin lattice relaxation rate for near optimally doped YBa_2Cu_3O_{7-delta}, near and...