K. E. O’Hara
University of Illinois at Urbana–Champaign
10 Papers
54 Citations
K. E. O’Hara is an academic researcher from University of Illinois at Urbana–Champaign. The author has contributed to research in topics: Thermal conductivity measurement & Auger effect. The author has an hindex of 10, co-authored 10 publications.
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Papers
Thermal conductivity of amorphous carbon thin films
TL;DR: In this paper, the authors measured the thermal conductivities of amorphous carbon thin films in the temperatures range 80-400 K using the 3ω method using the effective medium theory, which provides a phenomenological description of the variation of conductivity with mass density.
194
Magnetic-field dependence of planar copper and oxygen spin-lattice relaxation rates in the superconducting state of YBa2Cu3O7.
J. A. Martindale,S. E. Barrett,K. E. O’Hara,Charles P. Slichter,Wei-Cheng Lee,D. M. Ginsberg +5 more
TL;DR: The authors report nuclear spin-lattice relaxation rates, [ital W][sub 1], for planar copper and oxygen sites in the superconducting state of YBa[sub 2]Cu[sub 3]O[sub 7], which give the zero-field limit necessary for comparison with theory.
110
Two-body decay of thermalized excitons in Cu 2 O
TL;DR: In this paper, the authors examined the decay of thermalized excitons in cuprous oxide and determined their lifetime against two-body decay (i.e., Auger recombination).
41
Nuclear-spin-lattice relaxation-rate measurements in YBa2Cu3O7.
J. A. Martindale,S. E. Barrett,D. J. Durand,K. E. O’Hara,Charles P. Slichter,Wei-Cheng Lee,D. M. Ginsberg +6 more
TL;DR: The relaxation rate data are shown to be inconsistent with a spin-singlet, orbital [ital s]-wave pairing state with an isotropic energy gap.
29
Auger decay of excitons in Cu 2 O
TL;DR: In this paper, the authors determined the density of excitons by measuring their absolute brightness in a calibrated optical system and measuring the expanding volume occupied by the exciton, which is the dominant loss mechanism for the exciton at high densities in photoexcited materials.