Search Results - "Ott, HR"

Thermal conductivity of the hole-doped spin ladder system Sr14-xCaxCu24O41 by Sologubenko, AV, Gianno, K, Ott, HR, Ammerahl, U, Revcolevschi, A

“…The thermal conductivity of the spin-1/2 ladder system Sr14-xCaxCu24O41 ( x = 0, 2, and 12) has been measured both along ( kappa(c)) and perpendicular to (…”
Get full text

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…”
Get full text

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…”
Get full text

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…”
Get full text

Spectroscopic evidence for unconventional superconductivity in UBe13 by Walti, C, Ott, HR, Fisk, Z, Smith, JL

“…We report on measurements of the differential conductivity G of UBe13-Au contacts, which reveal the existence of low-energy Andreev surface bound states. These…”
Get full text

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

Get full text

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…”
Get full text

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…”
Get full text

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…”
Get full text

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…”
Get full text

Equilibrium magnetization in the vicinity of the first-order phase transition in the mixed state of high- T c superconductors by Landau, I. L., Ott, H. R.

Get full text

Elastic Moduli of a Single Quasicrystal of Decagonal Al-Ni-Co: Evidence for Transverse Elastic Isotropy by Chernikov, M. A., Ott, H. R., Bianchi, A., Migliori, A., Darling, T. W.

Get full text

Optical evidence for a spin-filter effect in the charge transport of Eu0.6Ca0.4B6 by Perucchi, A, Caimi, G, Ott, H R, Degiorgi, L, Bianchi, A D, Fisk, Z

“…We have measured the optical reflectivity R(omega) of Eu0.6Ca0.4B6 as a function of temperature (T) between 1.5 and 300 K and in external magnetic fields (H)…”
Get full text

Unusual magnetism of hexaborides by Ott, H.R, Gavilano, J.L, Ambrosini, B, Vonlanthen, P, Felder, E, Degiorgi, L, Young, D.P, Fisk, Z, Zysler, R

“…Various recent experimental investigations have revealed unusual magnetic properties of hexaborides with divalent cations M 2+. EuB 6 is ferromagnetic below 16…”
Get full text

LiVGe2O6, an anomalous quasi-1D, S = 1 system, as revealed by NMR by Gavilano, JL, Mushkolaj, S, Ott, HR, Millet, P, Mila, F

“…We report the results of 7Li nuclear magnetic resonance (NMR) studies of LiVGe2O6, a quasi-one-dimensional spin S = 1 model system, at low temperatures. Our…”
Get full text

Polar Kerr rotation of the ferromagnet EuB6 by BRODERICK, S, DEGIORGI, L, OTT, H. R, SARRAO, J. L, FISK, Z

Get full text

The emerging picture of ferromagnetism in the divalent hexaborides by Fisk, Z., Ott, H.R., Barzykin, V., Gor’kov, L.P.

“…Experiment suggests that the divalent hexaborides are semiconductors and their ferromagnetism is due to a small concentration of intrinsic defects. The physics…”
Get full text

Anisotropic field dependence of the magnetic transition in Cu2Te2O5Br2 by SOLOGUBENKO, A. V, DELL'AMORE, R, OTT, H. R, MILLET, P

Get full text

Inhomogeneous Mn-magnetism in Al–Pd–Mn quasicrystals by Rau, D, Gavilano, J.L, Mushkolaj, Sh, Beeli, C, Ott, H.R

“…We report the results of a comparative study of the Mn magnetism in decagonal and icosahedral quasicrystalline Al69.8Pd12.1Mn18.2. We made measurements of 27Al…”
Get full text

Scaling of the Equilibrium Magnetization in the Mixed State of Type-II Superconductors by Landau, I. L., Ott, H. R.

“…We discuss the analysis of mixed-state magnetization data of type-II superconductors using a recently developed scaling procedure. It is based on the fact…”
Get full text