61 citations · 285 across the 18 of their papers we have counts for
18 papers
Test for BCS-BEC Crossover in the Cuprate Superconductors
Qijin Chen, Zhiqiang Wang, Rufus Boyack +1
In this paper we address the question of whether high-temperature superconductors have anything in common with BCS-BEC crossover theory. Towards this goal, we present a proposal an…
When Superconductivity Crosses Over: From BCS to BEC
Qijin Chen, Zhiqiang Wang, Rufus Boyack +2
New developments in superconductivity, particularly through unexpected and often astonishing forms of superconducting materials, continue to excite the community and stimulate theo…
Higher angular momentum pairing states in SrRuO in the presence of longer-range interactions
Xin Wang, Zhiqiang Wang, Catherine Kallin
The superconducting symmetry of SrRuO remains a puzzle. Time-reversal symmetry breaking pairing has been proposed for reconciling multiple…
Heat-bath approach to anomalous thermal transport: effects of inelastic scattering
Zhiqiang Wang, Rufus Boyack, K. Levin
We present results for the entire set of anomalous charge and heat transport coefficients for metallic systems in the presence of a finite-temperature heat bath. In realistic physi…
Unified approach to electrical and thermal transport in high- superconductors
Rufus Boyack, Zhiqiang Wang, Qijin Chen +1
In this paper we present a consolidated equation for all low-field transport coefficients, based on a reservoir approach developed for non-interacting quasiparticles. This formalis…
Possibility of mixed helical p-wave pairings in SrRuO
Wen Huang, Zhiqiang Wang
The exact nature of unconventional superconductivity in SrRuO remains a mystery. At the phenomenological level, no superconducting order parameter proposed thus far seems a…
Quantum Geometric Contributions to the BKT Transition: Beyond Mean Field Theory
Zhiqiang Wang, Gaurav Chaudhary, Qijin Chen +1
We study quantum geometric contributions to the Berezinskii-Kosterlitz-Thouless (BKT) transition temperature, , in the presence of fluctuations beyond BCS theory.…
Spin-orbit coupling and spin-triplet pairing symmetry in
Zhiqiang Wang, Xin Wang, Catherine Kallin
Spin-orbit coupling (SOC) plays a crucial role in determining the spin structure of an odd parity psedospin-triplet Cooper pairing state. Here, we present a thorough study of how S…
Anomalous Hall effect in single-band chiral superconductors from impurity superlattices
Yu Li, Zhiqiang Wang, Wen Huang
Unlike anomalous quantum Hall insulators, clean single-band chiral superconductors do not exhibit intrinsic Hall effect at the one-loop approximation. Finite ac Hall conductance wa…
Effects of deep superconducting gap minima and disorder on residual thermal transport in
John F. Dodaro, Zhiqiang Wang, Catherine Kallin
Recent thermal conductivity measurements on [E. Hassinger et al., Phys. Rev. X 7, 011032 (2017)] were interpreted as favoring a pairing gap function with ver…
Spontaneous Edge Current in Higher Chirality Superconductors
Xin Wang, Zhiqiang Wang, Catherine Kallin
The effects of finite temperature, Meissner screening and surface roughness on the spontaneous edge current for higher chirality quasi-two dimensional superconductors are studied i…
Intrinsic ac anomalous Hall effect of nonsymmorphic chiral superconductors with an application to
Zhiqiang Wang, John Berlinsky, Gertrud Zwicknagl +1
We identify an intrinsic mechanism of the anomalous Hall effect for non-symmorphic chiral superconductors. This mechanism relies on both a nontrivial multi-band chiral superconduct…
Comment on "Magnetotransport signatures of a single nodal electron pocket constructed from Fermi arcs"
Sudip Chakravarty, Zhiqiang Wang
We comment on the recent work [N. Harrison, \textit{et al.} Phys. Rev. B {\bf 92}, 224505 (2015)] which attempts to explain the sign reversal and quantum oscillations of the Hall c…
Pairing of particle-hole symmetric composite fermions in half-filled Landau level
Zhiqiang Wang, Sudip Chakravarty
In a recent proposal of the half-filled Landau level, the composite fermions are taken to be Dirac particles and particle-hole symmetric. Cooper pairing of these composite fermions…
Onsager rule, quantum oscillation frequencies, and the density of states in the mixed-vortex state of cuprates
Zhiqiang Wang, Sudip Chakravarty
The Onsager rule determines the frequencies of quantum oscillations in magnetic fields. We show that this rule remains intact to an excellent approximation in the mixed-vortex stat…
Pairing in half-filled Landau level
Zhiqiang Wang, Ipsita Mandal, Suk Bum Chung +1
Pairing of composite fermions in half-filled Landau level state is reexamined by solving the BCS gap equation with full frequency dependent current-current interactions. Our result…
Spin dynamics of possible density wave states in the pseudogap phase of the high temperature superconductors
Chen-Hsuan Hsu, Zhiqiang Wang, Sudip Chakravarty
In a recent inelastic neutron scattering experiment in the pseudogap state of the high temperature superconductor an unusual `vertical' dispersion o…
Quantum oscillations in from an incommensurate -density wave order
Jonghyoun Eun, Zhiqiang Wang, Sudip Chakravarty
We consider quantum oscillation experiments in from the perspective of an incommensurate Fermi surface reconstruction using an exact transfer matrix…