2002/03/31 by V. N. Zavaritsky, V. V. Kabanov, A. S. Alexandrov · 3 citations
Materials Science · Physics and Astronomy · #Organic and Molecular Conductors Research #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1209/epl/i2002-00329-2
4 pages, 3 figures
arxiv created 2002/03/31 · openalex publication_date 2002/10/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
The resistive upper critical field, H c2 ( T ) of cuprates, superconducting spin-ladders, and organic (TMTSF) 2 X systems is shown to follow a universal nonlinear dependence H c2 ∝ ( T c − T ) 3/2 in a wide range near T c , while its low-temperature behaviour depends on the chemical formula and sample quality. H c2 ( T ) is ascribed to the Bose-Einstein condensation field of preformed pairs. The universality originates from the scaling arguments. Exceeding the Pauli paramagnetic limit is explained. Controversy in the determination of H c2 ( T ) from the kinetic and thermodynamic measurements is resolved in the framework of the charged Bose-gas model with impurity scattering.