In:
International Journal of Modern Physics B, World Scientific Pub Co Pte Ltd, Vol. 21, No. 18n19 ( 2007-07-30), p. 3208-3210
Kurzfassung:
We have performed measurements of the out-of-plane resistivity ρ c in magnetic fields up to 40 T and the scanning tunneling microscopy (STM) in the Pb -Substituted Bi 2201. Two kinds of pseudogaps PG1 and PG2 are found at T* 1 and T* 2 below which the nonmetallic ρ c starts to develop and to be suppressed in magnetic fields with decreasing temperature, respectively. The obtained phase diagram indicates that the pseudogap related to the superconductivity is not PG1 but PG2. STM images of the Bi(Pb) - O plane in the optimally doped sample show bright atom-strings at V ≤ 10 mV . The observed structure may indicate the one-dimensional correlation which is different from the 4a × 4a structure reported in other systems.
Materialart:
Online-Ressource
ISSN:
0217-9792
,
1793-6578
DOI:
10.1142/S0217979207044202
Sprache:
Englisch
Verlag:
World Scientific Pub Co Pte Ltd
Publikationsdatum:
2007
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