Gerhard Gritzner, Andrzej Kolodziejczyk, A. Kozlowski, Wolfgang T. König, Markus Mair, R. Zalecki,
"Specific heat and electron photoemission of Pb- and Bi- doped Tl-(Ba,Sr)-Ca-Cu-O (1223) high- temperature superconductors"
, in Physica C, Seite(n) 1423 - 1424, 1-1997, ISBN: ISSN S0921-4534(97)00816-2, A. Kolodziejczyk, R. Zalecki, A. Kozlowski, G. Gritzner, W. König, M. Mair: Specific heat and electron photoemission of Pb- and Bi- doped Tl-(Ba,Sr)-Ca-Cu-O (1223) high- temperature superconductors, Physica C, 282 - 287 (1997) 1423 - 1424, ISSN S0921-4534(97)00816-2
Original Titel:
Specific heat and electron photoemission of Pb- and Bi- doped Tl-(Ba,Sr)-Ca-Cu-O (1223) high- temperature superconductors
Sprache des Titels:
Englisch
Original Kurzfassung:
Specific heat of Tl0.58Pb0.4Sr1.6Ba0.4Ca2Cu3Oy, Tl0.79Bi0.25 Sr1.6Ba0.4Ca2Cu3Oy and Tl0.74Bi0.3Sr1.8Ba0.2Ca2Cu3Oy has been measured and the electronic specific heat coefficient g and the specific heat jumps DC at TC have been calculated. The DC ' s are about three times smaller than for the YBa2Cu3Ox samples. The core level and valence band spectra for Tl0.58Pb0.4Sr1.6Ba0.4Ca2Cu3Oy have been detected at room, at liquid nitrogen and at 125 K temperatures. The Fermi edge has not been observed though pronounced changes of the valence band shapes have been registered. This is most likely due to the larger anisotropy of electronic band structure of thallium samples in comparison to the yttrium superconductors.
Sprache der Kurzfassung:
Englisch
Englischer Titel:
Specific heat and electron photoemission of Pb- and Bi- doped Tl-(Ba,Sr)-Ca-Cu-O (1223) high- temperature superconductors
Englische Kurzfassung:
Specific heat of Tl0.58Pb0.4Sr1.6Ba0.4Ca2Cu3Oy, Tl0.79Bi0.25 Sr1.6Ba0.4Ca2Cu3Oy and Tl0.74Bi0.3Sr1.8Ba0.2Ca2Cu3Oy has been measured and the electronic specific heat coefficient g and the specific heat jumps DC at TC have been calculated. The DC ' s are about three times smaller than for the YBa2Cu3Ox samples. The core level and valence band spectra for Tl0.58Pb0.4Sr1.6Ba0.4Ca2Cu3Oy have been detected at room, at liquid nitrogen and at 125 K temperatures. The Fermi edge has not been observed though pronounced changes of the valence band shapes have been registered. This is most likely due to the larger anisotropy of electronic band structure of thallium samples in comparison to the yttrium superconductors.
Journal:
Physica C
Seitenreferenz:
1423 - 1424
Erscheinungsmonat:
1
Erscheinungsjahr:
1997
Notiz zum Zitat:
A. Kolodziejczyk, R. Zalecki, A. Kozlowski, G. Gritzner, W. König, M. Mair: Specific heat and electron photoemission of Pb- and Bi- doped Tl-(Ba,Sr)-Ca-Cu-O (1223) high- temperature superconductors, Physica C, 282 - 287 (1997) 1423 - 1424, ISSN S0921-4534(97)00816-2
Forschungs-