Search Results - "Ott, H R"

High-T c superconductivity in undoped ThFeAsN by Shiroka, T, Shang, T, Wang, C, Cao, G-H, Eremin, I, Ott, H-R, Mesot, J

“…Unlike the widely studied ReFeAsO series, the newly discovered iron-based superconductor ThFeAsN exhibits a remarkably high critical temperature of 30 K,…”
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High-Tc superconductivity in undoped ThFeAsN by Shiroka, T., Shang, T., Wang, C., Cao, G.-H., Eremin, I., Ott, H.-R., Mesot, J.

“…Unlike the widely studied Re FeAsO series, the newly discovered iron-based superconductor ThFeAsN exhibits a remarkably high critical temperature of 30 K,…”
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Distribution of NMR relaxations in a random Heisenberg chain by Shiroka, T, Casola, F, Glazkov, V, Zheludev, A, Prša, K, Ott, H-R, Mesot, J

“…NMR measurements of the (29)Si spin-lattice relaxation time T(1) were used to probe the spin-1/2 random Heisenberg chain compound BaCu(2)(Si(1-x)Ge(x))(2)O(7)…”
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Field-induced quantum soliton lattice in a frustrated two-leg spin-1/2 ladder by Casola, F, Shiroka, T, Feiguin, A, Wang, S, Grbić, M S, Horvatić, M, Krämer, S, Mukhopadhyay, S, Conder, K, Berthier, C, Ott, H-R, Rønnow, H M, Rüegg, Ch, Mesot, J

“…Based on high-field (31)P nuclear magnetic resonance experiments and accompanying numerical calculations, it is argued that in the frustrated S=1/2 ladder…”
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Dimensional crossover of spin chains in a transverse staggered field: An NMR study by Casola, F., Shiroka, T., Glazkov, V., Feiguin, A., Dhalenne, G., Revcolevschi, A., Zheludev, A., Ott, H.-R., Mesot, J.

“…Heisenberg spin-1/2 chain materials are known to substantially alter their static and dynamic properties when experiencing an effective transverse staggered…”
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Thermal Conductivity via Magnetic Excitations in Spin-Chain Materials by Sologubenko, A. V., Lorenz, T., Ott, H. R., Freimuth, A.

“…We discuss the recent progress and the current status of experimental investigations of spin-mediated energy transport in spin-chain and spin-ladder materials…”
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High-temperature weak ferromagnetism in a low-density free-electron gas by Fisk, Z, Young, D. P, Hall, D, Torelli, M. E, Sarrao, J. L, Thompson, J. D, Ott, H.-R, Oseroff, S. B, Goodrich, R. G, Zysler, R

“…The magnetic properties of the ground state of a low-density free-electron gas in three dimensions have been the subject of theoretical speculation and…”
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Superconductivity above 130 K in the Hg-Ba-Ca-Cu-O system by Schilling, A, Cantoni, M, Guo, J. D, Ott, H. R

“…Superconductivity above 130 degrees K in a material containing HgBa2Ca2Cu3O1 plus x, HgBa2CaCu2O6 plus x and an ordered superstructure comprising a defined…”
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Phase diagram of low-dimensional antiferromagnets with competing order parameters: A Landau-theory approach by Glazkov, V. N., Casola, F., Ott, H.-R., Shiroka, T.

“…We present a detailed analysis of the phase diagram of antiferromagnets with competing exchange-driven and field-induced order parameters. By using the…”
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Superconducting materials: What the record tells us by Fisk, Z., Ott, H.-R., Thompson, J.D.

“…We argue that the materials which appear to maximize the superconducting transition temperature can be regarded as living at the interface between chemistry…”
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Percolation and the colossal magnetoresistance of Eu-based hexaboride by WIGGER, G. A, BEELI, C, FELDER, E, OTT, H. R, BIANCHI, A. D, FISK, Z

“…Upon substituting Ca for Eu in the local-moment ferromagnet EuB6, the Curie temperature T(C) decreases substantially with increasing dilution of the magnetic…”
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Universal behavior of spin-mediated energy transport in S = 1/2 chain cuprates: BaCu2Si2O7 as an example by Sologubenko, A. V, Ott, H. R, Dhalenne, G, Revcolevschi, A

“…The thermal conductivity *k of the spin-(1/2) chain cuprate BaCu2Si2O7 was measured along different crystallographic directions in the temperature region…”
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Phonon scattering in quasicrystalline i-Al72Pd19.5Mn8.5 : A study of the low-temperature thermal conductivity by BILUSIC, A, SMONTARA, A, DOLINSEK, J, MCGUINESS, P, OTT, H. R

“…We measured the thermal conductivity of an icosahedral quasicrystal i-Al72Pd19.5Mn8.5 in the temperature range between 0.4K and 300K. The analysis of the…”
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Heavy electrons and non-Fermi liquids, the early times by Ott, H.R.

“…In retrospect, the observation of the unusual electronic properties of CeAl 3 at very low temperatures was a major step in a new direction, away from the…”
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1D to 2D Na+ ion diffusion inherently linked to structural transitions in Na0.7CoO2 by Medarde, M, Mena, M, Gavilano, J L, Pomjakushina, E, Sugiyama, J, Kamazawa, K, Pomjakushin, V Yu, Sheptyakov, D, Batlogg, B, Ott, H R, Månsson, M, Juranyi, F

“…We report the observation of a stepwise "melting" of the low-temperature Na-vacancy order in the layered transition-metal oxide Na0.7CoO2. High-resolution…”
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Irreversibility line of monocrystalline Bi2Sr2CaCu2O8 : experimental evidence for a dimensional crossover of the vortex ensemble by SCHILLING, A, JIN, R, GUO, J. D, OTT, H. R

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Low temperature NMR study of CeAl3 under hydrostatic pressure by WELLER, M, GAVILANO, J. L, SACCHETTI, A, OTT, H. R

“…Results of 27Al-NMR measurements on the heavy-electron compound CeAl3, recorded in low magnetic fields (of the order of 1kG), very low temperatures , and at…”
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Magnetic properties (Communication arising) Parasitic ferromagnetism in a hexaboride? by Young, D. P, Fisk, Z, Thompson, J. D, Ott, H. R, Oseroff, S. B, Goodrich, R. G

“…The results of Matsubayashi et al. on nominally stoichiometric, CaB6 sintered powders arrive at a conclusion concerning our study on ferromagnetism in this and…”
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Low-dimensional spin S = 1/2 system at the quantum critical limit: Na2V3O7 by Gavilano, J L, Rau, D, Mushkolaj, S, Ott, H R, Millet, P, Mila, F

“…We report the results of measurements of the dc susceptibility and the 23Na-NMR response of Na2V3O7, a recently synthesized, nonmetallic low dimensional spin…”
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Magneto-optical evidence of double exchange in a percolating lattice by Caimi, G, Perucchi, A, Degiorgi, L, Ott, H R, Pereira, V M, Neto, A H Castro, Bianchi, A D, Fisk, Z

“…Substituting Eu by Ca in ferromagnetic EuB6 leads to a percolation limited magnetic ordering. We present and discuss magneto-optical data of the Eu(1-x)Ca(x)B6…”
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