On the possible key experiments to show thesinglet-to-tripletconversion of the Cooper pairs by the use of a SFCO-method
Year: 2012
Type: conference-paper
Abstract: The problem of electron pairing above Meissner expel arose when high- T c superconductive ( HTS ) materials were discovered. And scientists are admitting know that there is need to consider 2 processes for HTS : electron pairing and long-range phase coherence among Cooper pairs ( pair condensation ) – separately and independently each other. Otherwise, it is admitted, that in HTS electrons become paired above Meissner expel (above T 0 , starting from T c ) & start forming SC -condensate only at T 0 , while in low- T c SC materials ( LTS ) the pairing and pair condensation start simultaneously ( T 0 = T c ). But, since discovery of HTS new data appeared and importance of some earlier data was recognized, indicating analogy among the HTS and LTS in connection with these 2 processes. Here we show that there are no differences among these materials regarding the said processes: electron pairing and pair condensation are separate & independent even in LTS . Difference is in a temperature scale. For LTS these processes run in a narrow range (∼ 30mK ), while in HTS the scale is longer (for YBaCuO , more than 3K ). This is the reason why separation of T c from T 0 in LTS is so hard so far. The problem is still open also due to lack of methods for "nonperturbative" study of the beginnings of SC transition in clean ( tiny ) objects with small signal. Analysis of data permits to conclude that becomes urgent sensitive study of the Fulde-Ferrell-Larkin-Ovchinnikov superconductivity in heavy-fermion materials that have layered electronic structure. And, the SFCO method may stand key tool for sensitive study of the pair formation in FFLO state. Such a study may show singlet-to-triplet conversion of Cooper pairs. It may also allow separating the ideal conducting ( R = 0) & ideal diamagnetic ( B = 0) states, which are important for true interpretation of a real nature of superconductivity.
Language: English
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W1990432905