Superfluid stiffness within Eliashberg theory: The role of vertex corrections
Source abstract
Abstract
The superfluid stiffness ${D}s$($T$) is one of the key characteristics of a superconductor, determining the magnetic penetration length and, in two dimensions, the critical temperature. For Galilean invariant systems, it is known that the zero-temperature stiffness takes a universal value ${D}s^{G\phantom{\rule{0}{0ex}}a\phantom{\rule{0}{0ex}}l}$ = $\frac{n}{m}$ ($T$=0), while for non-Galilean invariant systems the superfluid stiffness may be suppressed. Here, the authors demonstrate when and how vertex corrections may cancel suppression of the superfluid stiffness at strong coupling.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Physics of Superconductivity and Magnetism · Advanced Condensed Matter Physics · Magnetic and transport properties of perovskites and related materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Physics and Astronomy and William I. Fine Theoretical Physics Institute, University of Minnesota, Minneapolis, Minnesota 55455, USA
Funding
U.S. Department of Energy · Office of Science · Basic Energy Sciences · Kavli Institute for Theoretical Physics, University of California, Santa Barbara
References (57)
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