Prefer a chat interface with context about you and your work?
Slope of the upper critical field at <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>T</mml:mi><mml:mi>c</mml:mi></mml:msub></mml:math> in two-band superconductors with nonmagnetic disorder: <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>s</mml:mi><mml:mrow><mml:mo>+</mml:mo><mml:mo>+</mml:mo></mml:mrow></mml:msub></mml:math> superconductivity in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Ba</mml:mi…
A recent theory of the disorder-dependent slope of the upper critical field at the superconducting transition temperature ${T}_{c}$, defined as $S\ensuremath{\equiv}|d{H}_{c2}{/dT|}_{T\ensuremath{\rightarrow}{T}_{c}}$, is extended to multiband superconductors aimed at iron-based superconductors, considering two constant gaps of different magnitudes and, potentially, different signs. We show that the slope $S$ decreases with increasing …