Unconventional superconductivity in heavy-fermion compounds

BD White, JD Thompson, MB Maple - Physica C: superconductivity and its …, 2015 - Elsevier
Over the past 35 years, research on unconventional superconductivity in heavy-fermion
systems has evolved from the surprising observations of unprecedented superconducting …

Evidence for a pressure-induced antiferromagnetic quantum critical point in intermediate-valence UTe2

SM Thomas, FB Santos, MH Christensen, T Asaba… - Science …, 2020 - science.org
UTe2 is a recently discovered unconventional superconductor that has attracted much
interest because of its potentially spin-triplet topological superconductivity. Our ac …

Electronic in-plane symmetry breaking at field-tuned quantum criticality in CeRhIn5

F Ronning, T Helm, KR Shirer, MD Bachmann… - Nature, 2017 - nature.com
Electronic nematic materials are characterized by a lowered symmetry of the electronic
system compared to the underlying lattice, in analogy to the directional alignment without …

Evidence for two-gap superconductivity in the non-centrosymmetric compound LaNiC2

J Chen, L Jiao, JL Zhang, Y Chen, L Yang… - New Journal of …, 2013 - iopscience.iop.org
We study the superconducting properties of the non-centrosymmetric compound LaNiC 2 by
measuring the London penetration depth Δλ (T), the specific heat C (T, B) and the electrical …

Pair density waves in superconducting vortex halos

Y Wang, SD Edkins, MH Hamidian, JCS Davis… - Physical Review B, 2018 - APS
We analyze the interplay between ad-wave uniform superconducting and a pair-density-
wave (PDW) order parameter in the neighborhood of a vortex. We develop a …

Pair-density-wave superconducting order in two-leg ladders

A Jaefari, E Fradkin - Physical Review B—Condensed Matter and Materials …, 2012 - APS
We show using bosonization methods that extended Hubbard-Heisenberg models on two
types of two leg ladders (without flux and with flux π per plaquette) have commensurate pair …

Nuclear-Order-Induced Quantum Criticality and Heavy-Fermion Superconductivity at Ultra-low Temperatures in YbRh2Si2

E Schuberth, S Wirth, F Steglich - Frontiers in Electronic Materials, 2022 - frontiersin.org
The tetragonal heavy-fermion metal YbRh2Si2 orders antiferromagnetically at TN= 70 mK
and exhibits an unconventional quantum critical point (QCP) of Kondo-destroying type at …

Investigating the limits of superconductivity in UTe2

A Weiland, SM Thomas, PFS Rosa - Journal of Physics: Materials, 2022 - iopscience.iop.org
Spin-triplet bulk superconductors are a promising route to topological superconductivity, and
UTe 2 is a recently discovered contender. The superconducting properties of UTe 2 …

Giant Overlap between the Magnetic and Superconducting Phases of under Pressure

Z Ren, LV Pourovskii, G Giriat, G Lapertot, A Georges… - Physical Review X, 2014 - APS
High pressure provides a powerful means for exploring unconventional superconductivity
which appears mostly on the border of magnetism. Here, we report the discovery of pressure …

Pair-density-wave superconducting states and electronic liquid-crystal phases

R Soto-Garrido, E Fradkin - Physical Review B, 2014 - APS
In conventional superconductors the Cooper pairs have a zero center-of-mass momentum.
In this paper we present a theory of superconducting states where the Cooper pairs have a …