Rice University

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Showing 2018 · cond-mat.supr-conShow all

19 papers · 2 filters

cond-mat.supr-con2018

Probing itinerant antiferromagnetism with $d$ -wave Andreev reflection spectroscopy

C. R. Granstrom, R. -X. Liang, Y. Li +5

To study how Andreev reflection (AR) is affected by itinerant antiferromagnetism, we perform $d$ -wave AR spectroscopy with superconducting YBa $_{2}$ Cu $_{3}$ O $_{7 - δ}$ on TiAu and on var…

cond-mat.supr-con2018★ 20 cited

Transport evidence for three dimensional topological superconductivity in doped $β$ -PdBi $_{2}$

Ayo Kolapo, Tingxin Li, Pavan Hosur +1

Interest in topological states of matter exploded over a decade ago with the theoretical prediction and experimental detection of three-dimensional topological insulators, especial…

cond-mat.supr-con2018★ 14 cited

Spectral Evidence for Emergent Order in Ba $_{1 - x}$ Na $_{x}$ Fe $_{2}$ As $_{2}$

M. Yi, A. Frano, D. H. Lu +21

We report an angle-resolved photoemission spectroscopy study of the iron-based superconductor family, Ba $_{1 - x}$ Na $_{x}$ Fe $_{2}$ As $_{2}$ . This system harbors the recently discovered doub…

cond-mat.supr-con2018★ 19 cited

Widespread orthorhombic fluctuations in the (Sr,Na)Fe $_{2}$ As $_{2}$ family of superconductors

Benjamin A. Frandsen, Keith M. Taddei, Daniel E. Bugaris +7

We report comprehensive pair distribution function measurements of the hole-doped iron-based superconductor system Sr $_{1 - x}$ Na $_{x}$ Fe $_{2}$ As $_{2}$ . Structural refinements performed…

cond-mat.supr-con2018★ 19 cited

Interplay between unconventional superconductivity and heavy-fermion quantum criticality: CeCu $_{2}$ Si $_{2}$ versus YbRh $_{2}$ Si $_{2}$

M. Smidman, O. Stockert, J. Arndt +25

In this paper the low-temperature properties of two isostructural canonical heavy-fermion compounds are contrasted with regards to the interplay between antiferromagnetic (AF) quan…

cond-mat.supr-con2018★ 14 cited

Neutron spin resonance as a probe of Fermi surface nesting and superconducting gap symmetry in Ba $_{0.67}$ K $_{0.33}$ (Fe $_{1 - x}$ Co $_{x}$ ) $_{2}$ As $_{2}$

Rui Zhang, Weiyi Wang, Thomas Maier +5

We use inelastic neutron scattering to study energy and wave vector dependence of the superconductivity-induced resonance in hole-doped Ba $_{0.67}$ K $_{0.33}$ (Fe $_{1 - x}$ Co $_{x}$ )$_{…

cond-mat.supr-con2018★ 4 cited

c-axis pressure induced antiferromagnetic order in optimally P-doped BaFe2(As0.70P0.30)2 superconductor

Ding Hu, Weiyi Wang, Wenliang Zhang +14

Superconductivity in BaFe2(As1-xPx)2 iron pnictides emerges when its in-plane two-dimensional (2D) orthorhombic lattice distortion associated with nematic phase at Ts and three-dim…

cond-mat.supr-con2018★ 6 cited

Unusual suppression of a spin resonance mode with magnetic field in underdoped NaFe $_{1 - x}$ Co $_{x}$ As: Evidence for orbital-selective pairing

Yu Song, Guotai Tan, Chenglin Zhang +3

We use inelastic neutron scattering to study the fate of the two spin resonance modes in underdoped superconducting NaFe $_{1 - x}$ Co $_{x}$ As ( $x = 0.0175$ ) under applied magnetic fields.…

cond-mat.supr-con2018★ 30 cited

Local orthorhombic lattice distortions in the paramagnetic tetragonal phase of superconducting NaFe $_{1 - x}$ Ni $_{x}$ As

Weiyi Wang, Yu Song, Chongde Cao +9

Understanding the interplay between nematicity, magnetism and superconductivity is pivotal for elucidating the physics of iron-based superconductors. Here we use neutron scattering…

cond-mat.supr-con2018★ 10 cited

Doping effects of Cr on the physical properties of BaFe $_{1.9 - x}$ Ni $_{0.1}$ Cr $_{x}$ As $_{2}$

Dongliang Gong, Tao Xie, Rui Zhang +7

We present a systematic study on the heavily Cr doped iron pnictides BaFe $_{1.9 - x}$ Ni $_{0.1}$ Cr $_{x}$ As $_{2}$ by using elastic neutron scattering, high-resolution synchrotron X-ray…

cond-mat.supr-con2018★ 31 cited

Spin Waves in Detwinned BaFe $_{2}$ As $_{2}$

Xingye Lu, Daniel D. Scherer, David W. Tam +8

Understanding magnetic interactions in the parent compounds of high-temperature superconductors forms the basis for determining their role for the mechanism of superconductivity. F…

cond-mat.supr-con2018★ 27 cited

Gradual Enhancement of Stripe-Type Antiferromagnetism in Spin Ladder Material BaFe $_{2}$ S $_{3}$ Under Pressure

Liangliang Zheng, Benjamin A. Frandsen, Changwei Wu +9

We report pressure-dependent neutron diffraction and muon spin relaxation/rotation measurements combined with first-principles calculations to investigate the structural, magnetic,…

cond-mat.supr-con2018★ 10 cited

Photo-induced new metastable state with modulated Josephson coupling strengths in Pr $_{0.88}$ LaCe $_{0.12}$ CuO $_{4}$

S. J. Zhang, Z. X. Wang, D. Wu +7

Photoexcitations on a superconductor using ultrafast nir-infrared (NIR) pulses, whose energy is much higher than the superconducting energy gap, are expected to suppress/destroy su…

cond-mat.supr-con2018★ 5 cited

Stabilization of $s$ -wave superconductivity through arsenic $p$ -orbital hybridization in electron-doped BaFe $_{2}$ As $_{2}$

David W. Tam, Tom Berlijn, Thomas A. Maier

Using random-phase approximation spin-fluctuation theory, we study the influence of the hybridization between iron $d$ -orbitals and pnictide $p$ -orbitals on the superconducting pai…

cond-mat.supr-con2018★ 1 cited

Raman scattering study of NaFe $_{0.53}$ Cu $_{0.47}$ As

W. -L. Zhang, Y. Song, W. -Y. Wang +3

We use polarization-resolved Raman scattering to study lattice dynamics in NaFe $_{0.53}$ Cu $_{0.47}$ As single crystals. We identify 4 $A_{1 g}$ phonon modes at 125, 172, 183 and 197…

cond-mat.supr-con2018★ 49 cited

Orbital selectivity enhanced by nematic order in FeSe

Rong Yu, Jian-Xin Zhu, Qimiao Si

Motivated by the recent low-tempearture experiments on bulk FeSe, we study the electron correlation effects in a multiorbital model for this compound in the nematic phase using the…

cond-mat.supr-con2018★ 13 cited

Disentangling superconducting and magnetic orders in NaFe_1-xNi_xAs using muon spin rotation

Sky C. Cheung, Zurab Guguchia, Benjamin A. Frandsen +24

Muon spin rotation and relaxation studies have been performed on a "111" family of iron-based superconductors NaFe_1-xNi_xAs. Static magnetic order was characterized by obtaining t…

cond-mat.supr-con2018★ 7 cited

Direct observation of spin excitation anisotropy in the paramagnetic orthorhombic state of BaFe $_{2 - x}$ Ni $_{x}$ As $_{2}$

Haoran Man, Rui Zhang, J. T. Park +4

We use transport and inelastic neutron scattering measurements to investigate single crystals of iron pnictide BaFe $_{2 - x}$ Ni $_{x}$ As $_{2}$ ( $x = 0, 0.03$ ), which exhibit a tetragonal…

cond-mat.supr-con2018★ 7 cited

Spin-isotropic continuum of spin excitations in antiferromagnetically ordered Fe $_{1.07}$ Te

Yu Song, Xingye Lu, L. -P. Regnault +5

Unconventional superconductivity typically emerges in the presence of quasi-degenerate ground states, and the associated intense fluctuations are likely responsible for generating…

Probing itinerant antiferromagnetism with d-wave Andreev reflection spectroscopy

Transport evidence for three dimensional topological superconductivity in doped β-PdBi2​

Spectral Evidence for Emergent Order in Ba1−x​Nax​Fe2​As2​

Widespread orthorhombic fluctuations in the (Sr,Na)Fe2​As2​ family of superconductors

Interplay between unconventional superconductivity and heavy-fermion quantum criticality: CeCu2​Si2​ versus YbRh2​Si2​

Neutron spin resonance as a probe of Fermi surface nesting and superconducting gap symmetry in Ba0.67​K0.33​(Fe1−x​Cox​)2​As2​

c-axis pressure induced antiferromagnetic order in optimally P-doped BaFe2(As0.70P0.30)2 superconductor

Unusual suppression of a spin resonance mode with magnetic field in underdoped NaFe1−x​Cox​As: Evidence for orbital-selective pairing

Local orthorhombic lattice distortions in the paramagnetic tetragonal phase of superconducting NaFe1−x​Nix​As

Doping effects of Cr on the physical properties of BaFe1.9−x​Ni0.1​Crx​As2​

Spin Waves in Detwinned BaFe2​As2​

Gradual Enhancement of Stripe-Type Antiferromagnetism in Spin Ladder Material BaFe2​S3​ Under Pressure

Photo-induced new metastable state with modulated Josephson coupling strengths in Pr0.88​LaCe0.12​CuO4​

Stabilization of s-wave superconductivity through arsenic p-orbital hybridization in electron-doped BaFe2​As2​

Raman scattering study of NaFe0.53​Cu0.47​As