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Theory of the low- and high-field superconducting phases of UTe
Josephine J. Yu, Yue Yu, Daniel F. Agterberg +1
Recent nuclear magnetic resonance (NMR) and calorimetric experiments have observed that UTe exhibits a transition between two distinct superconducting phases as a function of m…
Pair density wave order from electron repulsion
Yi-Ming Wu, P. A. Nosov, Aavishkar A. Patel +1
A pair density wave (PDW) is a superconductor whose order parameter is a periodic function of space, without an accompanying spatially-uniform component. Since PDWs are not the out…
Character of the "normal state" of the nickelate superconductors
Kyuho Lee, Bai Yang Wang, Motoki Osada +10
The occurrence of superconductivity in proximity to various strongly correlated phases of matter has drawn extensive focus on their normal state properties, to develop an understan…
Quenched randomness, thermal fluctuations and reentrant superconductivity: application to UTe
Yue Yu, S. Raghu
Reentrant superconductivity has been observed in the candidate spin-triplet superconductor UTe as a function of the magnetic field applied along the hard axis. Resistivity meas…
Theory of superconductivity in doped quantum paraelectrics
Yue Yu, Harold Y. Hwang, S. Raghu +1
Recent experiments on Nb-doped SrTiO have shown that the superconducting energy gap to the transition temperature ratio maintains the Bardeen-Cooper-Schrieffer (BCS) value thro…
Majorana fermion arcs and the local density of states of UTe
Yue Yu, Vidya Madhavan, S. Raghu
is a leading candidate for chiral p-wave superconductivity, and for hosting exotic Majorana fermion quasiparticles. Motivated by recent STM experiments in this syste…
Low-density superconductivity in SrTiO bounded by the adiabatic criterion
Hyeok Yoon, Adrian G. Swartz, Shannon P. Harvey +6
SrTiO exhibits superconductivity for carrier densities cm. Across this range, the Fermi level traverses a number of vibrational modes in the system, ma…
Universal behavior of the bosonic metallic ground state in a two-dimensional superconductor
Zhuoyu Chen, Bai Yang Wang, Adrian G. Swartz +4
Anomalous metallic behavior, marked by a saturating finite resistivity much lower than the Drude estimate, has been observed in a wide range of two-dimensional superconductors. Uti…
and Pauli limited critical field of : uniaxial strain dependence
Yue Yu, Stuart Brown, S. Raghu +1
Variations of critical temperature and in-plane critical field of under uniaxial stress have recently been reported. We compare the…
Robust -wave superconductivity of infinite-layer nickelates
Xianxin Wu, Domenico Di Sante, Tilman Schwemmer +4
Motivated by the recent observation of superconductivity in strontium doped NdNiO, we study the superconducting instabilities in this system from various vantage points. Starti…
Pronounced drop of O NMR Knight shift in superconducting state of SrRuO
A. Pustogow, Yongkang Luo, A. Chronister +9
The superconducting state in the quasi-two-dimensional and strongly correlated SrRuO is uniquely held up as a solid state analog to superfluid He-, with an odd-parit…
Residual spin susceptibility in the spin-triplet, orbital-singlet model
Yue Yu, Alfred K. C. Cheung, S. Raghu +1
Nuclear magnetic resonance (NMR) and Knight shift measurements are critical tools in the identification of spin-triplet superconductors. We discuss the effects of spin orbit coupli…
The density and disorder tuned superconductor-metal transition in two dimensions
Zhuoyu Chen, Adrian G. Swartz, Hyeok Yoon +8
Quantum ground states which arise at atomically controlled oxide interfaces provide an opportunity to address key questions in condensed matter physics, including the nature of two…
Superconducting tunneling spectroscopy of spin-orbit coupling and orbital depairing in Nb:SrTiO
Adrian G. Swartz, Alfred K. C. Cheung, Hyeok Yoon +4
We have examined the intrinsic spin-orbit coupling (SOC) and orbital depairing in thin films of Nb-doped SrTiO by superconducting tunneling spectroscopy. The orbital depairing…
Polaronic behavior in a weak coupling superconductor
Adrian G. Swartz, Hisashi Inoue, Tyler A. Merz +5
The nature of superconductivity in the dilute semiconductor SrTiO has remained an open question for more than 50 years. The extremely low carrier densities ( - $10^{20…
Spin-orbit coupling and odd-parity superconductivity in the quasi-one-dimensional compound LiMoO
Christian Platt, Weejee Cho, Ross H. McKenzie +2
Previous theoretical studies [W. Cho, C. Platt, R. H. McKenzie, and S. Raghu, Phys. Rev. B 92, 134514 (2015); N. Lera and J. V. Alvarez, Phys. Rev. B 92, 174523 (2015)] have sugges…
Spin-triplet superconductivity in a weak-coupling Hubbard model for the quasi-one-dimensional compound LiMoO
Weejee Cho, Christian Platt, Ross H. McKenzie +1
The purple bronze LiMoO is of interest due to its quasi-one-dimensional electronic structure and the possible Luttinger liquid behavior resulting from it. For su…
Non-topological nature of the edge current in a chiral p-wave superconductor
Wen Huang, Samuel Lederer, Edward Taylor +1
The edges of time reversal symmetry breaking topological superconductors support chiral Majorana bound states as well as spontaneous charge currents. The Majorana modes are a robus…
Kerr effect as evidence of gyrotropic order in the cuprates - revisited
Pavan Hosur, A. Kapitulnik, S. A. Kivelson +4
Recent analysis has confirmed earlier general arguments that the Kerr response vanishes in any time-reversal invariant system which satisfies the Onsager relations. Thus, the widel…
Suppression of spontaneous currents in SrRuO by surface disorder
Samuel Lederer, Wen Huang, Edward Taylor +2
A major challenge to the chiral -wave hypothesis for the pairing symmetry of the unconventional superconductor SrRuO is the null result of sensitive scanning magnetometr…
Tunable Coupling of Two-Dimensional Superconductors in Bilayer SrTiO3 Heterostructures
Hisashi Inoue, Minu Kim, Christopher Bell +3
Interlayer coupling effects between high mobility two-dimensional superconductors are studied in bilayer delta-doped SrTiO3 heterostructures. By tuning the undoped SrTiO3 spacer la…
Band-structure effects on superconductivity in Hubbard models
Weejee Cho, Ronny Thomale, Srinivas Raghu +1
We study the influence of the band structure on the symmetry and superconducting transition temperature in the (solvable) weak-coupling limit of the repulsive Hubbard model. Among…
Optimal T of cuprates: role of screening and reservoir layers
S. Raghu, R. Thomale, T. H. Geballe
We explore the role of charge reservoir layers (CRLs) on the superconducting transition temperature of cuprate superconductors. Specifically, we study the effect of CRLs with effic…
Charge and spin collective modes in a quasi-1D model of Sr2RuO4
Suk Bum Chung, Srinivas Raghu, Aharon Kapitulnik +1
Given that Sr2RuO4 is a two-component p-wave superconductor, there exists the possibility of well defined collective modes corresponding to fluctuations of the relative phase and s…