Abstract
We report on specific heat measurements in high quality (K,Ba)BiO{sub 3} single crystals (T{sub c}{approx}31.5 K). A well defined specific heat jump is clearly visible at T{sub C{sub p(H)}} in the entire investigated field range (up to 13 T). However, the corresponding T{sub C{sub p(H)}} exhibits an anomalous positive curvature and the amplitude of the jump rapidly decreases with field suggesting a non-linear increase of the Sommerfeld coefficient ({gamma}(H)). This anomalous behaviour is confirmed by low temperature measurements which show that {gamma}(H){proportional_to}H{sup {alpha}} with {alpha}{approx}0.65.
Citation Formats
Klein, T, Marcenat, C, Bouquet, F, Junod, A, Blanchard, S, and Marcus, J.
Anomalous field dependence of the Sommerfeld coefficient in the isotropic (K,Ba)BiO{sub 3} superconductor.
Netherlands: N. p.,
2004.
Web.
doi:10.1016/j.physc.2004.03.057.
Klein, T, Marcenat, C, Bouquet, F, Junod, A, Blanchard, S, & Marcus, J.
Anomalous field dependence of the Sommerfeld coefficient in the isotropic (K,Ba)BiO{sub 3} superconductor.
Netherlands.
https://doi.org/10.1016/j.physc.2004.03.057
Klein, T, Marcenat, C, Bouquet, F, Junod, A, Blanchard, S, and Marcus, J.
2004.
"Anomalous field dependence of the Sommerfeld coefficient in the isotropic (K,Ba)BiO{sub 3} superconductor."
Netherlands.
https://doi.org/10.1016/j.physc.2004.03.057.
@misc{etde_20618344,
title = {Anomalous field dependence of the Sommerfeld coefficient in the isotropic (K,Ba)BiO{sub 3} superconductor}
author = {Klein, T, Marcenat, C, Bouquet, F, Junod, A, Blanchard, S, and Marcus, J}
abstractNote = {We report on specific heat measurements in high quality (K,Ba)BiO{sub 3} single crystals (T{sub c}{approx}31.5 K). A well defined specific heat jump is clearly visible at T{sub C{sub p(H)}} in the entire investigated field range (up to 13 T). However, the corresponding T{sub C{sub p(H)}} exhibits an anomalous positive curvature and the amplitude of the jump rapidly decreases with field suggesting a non-linear increase of the Sommerfeld coefficient ({gamma}(H)). This anomalous behaviour is confirmed by low temperature measurements which show that {gamma}(H){proportional_to}H{sup {alpha}} with {alpha}{approx}0.65.}
doi = {10.1016/j.physc.2004.03.057}
journal = []
issue = {3-4}
volume = {408-410}
journal type = {AC}
place = {Netherlands}
year = {2004}
month = {Aug}
}
title = {Anomalous field dependence of the Sommerfeld coefficient in the isotropic (K,Ba)BiO{sub 3} superconductor}
author = {Klein, T, Marcenat, C, Bouquet, F, Junod, A, Blanchard, S, and Marcus, J}
abstractNote = {We report on specific heat measurements in high quality (K,Ba)BiO{sub 3} single crystals (T{sub c}{approx}31.5 K). A well defined specific heat jump is clearly visible at T{sub C{sub p(H)}} in the entire investigated field range (up to 13 T). However, the corresponding T{sub C{sub p(H)}} exhibits an anomalous positive curvature and the amplitude of the jump rapidly decreases with field suggesting a non-linear increase of the Sommerfeld coefficient ({gamma}(H)). This anomalous behaviour is confirmed by low temperature measurements which show that {gamma}(H){proportional_to}H{sup {alpha}} with {alpha}{approx}0.65.}
doi = {10.1016/j.physc.2004.03.057}
journal = []
issue = {3-4}
volume = {408-410}
journal type = {AC}
place = {Netherlands}
year = {2004}
month = {Aug}
}