Zobrazeno 1 - 10
of 39
pro vyhledávání: '"A.L. Wachs"'
Autor:
Hiizu Nakanishi, Richard H. Howell, Pei-Herng Hor, Michael J. Fluss, P.K. Tseng, Z. J. Huang, A.L. Wachs, A. Bharathi, J. Kyle, R. L. Meng, Patrice E. A. Turchi, Z. Z. Wang, Ching-Wu Chu, Yan Ching Jean, C. S. Sundar
Publikováno v:
Physical Review Letters. 64:1593-1596
The temperature dependence between 10 and 300 K of the positron lifetime was measured in the high-temperature superconductors YBA{sub 2}(Cu{sub 1{minus}{ital x}}{ital M}{sub {ital x}}){sub 3}O{sub 6+{delta}}, where {ital M}=Zn and Ga with {ital x}=0.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::198f00d5f173c313a81aede14737dac9
https://doi.org/10.1103/physrevlett.64.1593
https://doi.org/10.1103/physrevlett.64.1593
Autor:
M. J. Fluss, Simon Rayner, Z.Z. Wang, A.L. Wachs, J.H. Kaiser, H. Haghighi, Richard H. Howell, Yan Ching Jean, Patrice E. A. Turchi, R.N. West
Publikováno v:
Journal of Physics: Condensed Matter. 2:1911-1922
The authors have measured the two-dimensional electron-positron momentum density (resolved momentum components along (100) and (010)) for single crystals of YBa2Cu3O7- delta at a significantly higher level of statistical precision for this orientatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a3bd4eb630fa60dc02e3f88c39cadce2
https://doi.org/10.1088/0953-8984/2/7/021
https://doi.org/10.1088/0953-8984/2/7/021
Autor:
R.N. West, Yan Ching Jean, A.L. Wachs, Richard H. Howell, K. H. Wetzler, M. J. Fluss, Patrice E. A. Turchi, J.H. Kaiser
Publikováno v:
Journal of Physics: Condensed Matter. 2:1635-1658
The authors discuss positron behaviour and in particular the ground state positron probability in high-Tc materials. Special attention is paid to La2CuO4, for which they report detailed high-resolution two-dimensional angular correlation of positron
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::94f2ab2d83f82476ca7129ac33a6dbb0
https://doi.org/10.1088/0953-8984/2/6/021
https://doi.org/10.1088/0953-8984/2/6/021
Autor:
M. J. Fluss, Hiizu Nakanishi, Z.Z. Wang, Pei-Herng Hor, Patrice E. A. Turchi, A.L. Wachs, R. L. Meng, Ching-Wu Chu, Yan Ching Jean, Z. J. Huang, Richard H. Howell
Publikováno v:
Journal of Physics: Condensed Matter. 1:2989-2996
The temperature dependence between 2 and 300 K of the positron-electron annihilation lifetime and the electron momentum distribution from the Doppler-broadened annihilation gamma -ray energy spectrum were measured in the high-temperature superconduct
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8020d5e5d515dfe586d99ce7fddacc23
https://doi.org/10.1088/0953-8984/1/18/004
https://doi.org/10.1088/0953-8984/1/18/004
Autor:
Richard H. Howell, M. J. Fluss, Ching-Wu Chu, Hiizu Nakanishi, J. Z. Huang, Yan Ching Jean, A.L. Wachs, Patrice E. A. Turchi, H. P. Hor, J. Kyle, R. L. Meng
Publikováno v:
Physical Review Letters. 60:1069-1072
The paper reports the positron-annihilation lifetime and Doppler-broadening energy spectra in La(1.85)Sr(0.15)CuO4 superconductors for T = 10-297 K. A strong temperature dependence in positron lifetime and momentum distribution parameters is observed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5e538c7389291aacc8c4ad23b168de08
https://doi.org/10.1103/physrevlett.60.1069
https://doi.org/10.1103/physrevlett.60.1069
Autor:
Joseph V. Waszczak, Lynn Schneemeyer, M. J. Fluss, Y.C. Jean, A.L. Wachs, Richard H. Howell, D. R. Harshman
Publikováno v:
Physical Review B. 38:848-851
We report our measurements of the temperature dependence of the positron lifetime spectrum in single-crystal Y${\mathrm{Ba}}_{2}$${\mathrm{Cu}}_{3}$${\mathrm{O}}_{7}$. Contrary to earlier measurements in sintered powders, we observe only a single lif
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c8b1ff20dc5f007305503fb0c3c32e66
https://doi.org/10.1103/physrevb.38.848
https://doi.org/10.1103/physrevb.38.848
Autor:
M. J. Fluss, K. L. Merkle, Y.C. Jean, A. Revcolevschi, J.H. Kaiser, Patrice E. A. Turchi, Richard H. Howell, R.N. West, A.L. Wachs
Publikováno v:
Physical Review B. 40:1-9
We report the first two-dimensional angular correlation of positron-annihilation radiation (ACPAR) studies of the positron-electron momentum distribution for NiO. The data contain two components: a large, isotropic, corelike electron contribution and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f49245f9ef7bd6a0993ab96a98e38ed0
https://doi.org/10.1103/physrevb.40.1
https://doi.org/10.1103/physrevb.40.1
Autor:
Don M. Nicholson, R.H. Howell, F. J. Pinski, Duane D. Johnson, G. M. Stocks, M. J. Fluss, W. Schweika, Patrice E. A. Turchi, A.L. Wachs
Publikováno v:
MRS Proceedings. 166
Recently, short range order (SRO) parameters have been extracted from the neutron diffuse scattering intensities on Ni-Cr alloys with 11 to 25 at. pct. chromium. These data were analyzed using inverse-Monte Carlo simulations to extract atomic interac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9b54c3e3e88152df047fc4a407bcc75f
https://doi.org/10.1557/proc-166-231
https://doi.org/10.1557/proc-166-231
Autor:
J. P. Remeika, K. H. Wetzler, A. S. Cooper, R. M. Fleming, Richard H. Howell, M. J. Fluss, Patrice E. A. Turchi, D. R. Harshman, Y.C. Jean, A.L. Wachs
Publikováno v:
Physical review. B, Condensed matter. 38(1)
We report results of positron-electron momentum-distribution measurements of single-crystal ${\mathrm{La}}_{2}$Cu${\mathrm{O}}_{4}$ using two-dimensional angular correlation of positron-annihilation-radiation techniques. The data contain two componen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0866e58bb71562908ac2650811dd1ecb
https://pubmed.ncbi.nlm.nih.gov/9945292
https://pubmed.ncbi.nlm.nih.gov/9945292
Publikováno v:
Physical review letters. 61(17)
A reply to the comment on Evidence for a common high-temperature superconducting effect in LaSrCuO and YBaCuO is presented.It is conteted that a short diffusion length for thermalized positrons enables to probe the bulk properties of polycrystaline s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f273b77480c508783d8be3f3915acc71
https://pubmed.ncbi.nlm.nih.gov/10038957
https://pubmed.ncbi.nlm.nih.gov/10038957