178 citations · 1.6k across the 54 of their papers we have counts for
54 papers
Superconductivity modulated by structural phase transitions in pressurized vanadium-based kagome metals
Feng Du, Rui Li, Shuaishuai Luo +10
The interplay of superconductivity with electronic and structural instabilities on the kagome lattice provides a fertile ground for the emergence of unusual phenomena. The vanadium…
Spin-excitation anisotropy in the nematic state of detwinned FeSe
Xingye Lu, Wenliang Zhang, Yi Tseng +11
The origin of the electronic nematicity in FeSe is one of the most important unresolved puzzles in the study of iron-based superconductors. In both spin- and orbital-nematic models…
RKKY coupled local moment magnetism in NaFeCuAs
Yizhou Xin, Ingrid Stolt, Yu Song +2
A central question in a large class of strongly correlated electron systems, including heavy fermion compounds and iron pnictides, is the identification of different phases and the…
Strain-sensitive superconductivity in kagome metals KVSb and CsVSb probed by point-contact spectroscopy
Lichang Yin, Dongting Zhang, Chufan Chen +12
The kagome lattice is host to flat bands, topological electronic structures, Van Hove singularities and diverse electronic instabilities, providing an ideal platform for realizing…
High-energy magnetic excitations from heavy quasiparticles in CeCuSi
Yu Song, Weiyi Wang, Chongde Cao +8
Magnetic fluctuations is the leading candidate for pairing in cuprate, iron-based and heavy fermion superconductors. This view is challenged by the recent discovery of nodeless sup…
Structural and Magnetic Transitions in the Planar Antiferromagnet BaIrO
Xiang Chen, Yu He, Shan Wu +7
We report the structural and magnetic ground state properties of the monoclinic compound barium iridium oxide BaIrO using a combination of resonant x-ray scattering,…
Nodeless superconductivity in the kagome metal CsVSb
Weiyin Duan, Zhiyong Nie, Shuaishuai Luo +13
The recently discovered kagome metal series VSb (=K, Rb, Cs) exhibits topologically nontrivial band structures, chiral charge order and superconductivity, presenting…
Interplay between charge order and superconductivity in the kagome metal KVSb
Feng Du, Shuaishuai Luo, Brenden R. Ortiz +7
The kagome metal KVSb hosts charge order, topologically nontrivial Dirac band crossings, and a superconducting ground state with unconventional characteristics, providing a…
Spin dynamics in NaFeAs and NaFeCuAs probed by resonant inelastic X-ray scattering
Yu Song, Weiyi Wang, Eugenio Paris +11
The parent compounds of iron-based superconductors are magnetically-ordered bad metals, with superconductivity appearing near a putative magnetic quantum critical point. The presen…
Short-range nematic fluctuations in Sr1-xNaxFe2As2 superconductors
Shan Wu, Yu Song, Yu He +10
Interactions between nematic fluctuations, magnetic order and superconductivity are central to the physics of iron-based superconductors. Here we report on in-plane transverse acou…
In-plane uniaxial pressure-induced out-of-plane antiferromagnetic moment and critical fluctuations in BaFeAs
Panpan Liu, Mason L. Klemm, Long Tian +13
A small in-plane external uniaxial pressure has been widely used as an effective method to acquire single domain iron pnictide BaFeAs, which exhibits twin-domains without u…
Nature of the spin resonance mode in CeCoIn
Yu Song, Weiyi Wang, John S. Van Dyke +9
Spin-fluctuation-mediated unconventional superconductivity can emerge at the border of magnetism, featuring a superconducting order parameter that changes sign in momentum space. D…
Strain-induced spin-nematic state and nematic susceptibility arising from Fe clusters in KFeAgTe
Yu Song, Dongsheng Yuan, Xingye Lu +3
Spin nematics break spin-rotational symmetry while maintaining time-reversal symmetry, analogous to liquid crystal nematics that break spatial rotational symmetry while maintaining…
Stripe Antiferromagnetism and Disorder in the Mott Insulator NaFeCuAs ()
Yizhou Xin, Ingrid Stolt, Yu Song +2
Neutron scattering measurements have demonstrated that the heavily Cu-doped NaFeCuAs compound behaves like a Mott insulator exhibiting both real space Fe-Cu stripes,…
Flat band magnetism and helical magnetic order in Ni-doped SrCoAs
Yu Li, Zhonghao Liu, Zhuang Xu +15
A series of Sr(CoNi)As single crystals was synthesized allowing a comprehensive phase diagram with respect to field, temperature, and chemical substitution to b…
Impact of the first order antiferromagnetic phase transition on the paramagnetic spin excitations and nematic phase of SrFeAs
David W. Tam, Weiyi Wang, Li Zhang +7
Understanding the nature of the electronic nematic phase in iron pnictide superconductors is important for elucidating its impact on high-temperature superconductivity. Here we use…
Toward the Mott state with Magnetic Cluster Formation in Heavily Cu-Doped NaFeCuAs
Yizhou Xin, Ingrid Stolt, Jeongseop A. Lee +3
Recent neutron scattering measurements indicate that NaFeCuAs forms an antiferromagnetic stripe phase near in a Mott insulating state. This copper conc…
Coexistence of ferromagnetic and stripe antiferromagnetic spin fluctuations in SrCoAs
Yu Li, Zhiping Yin, Zhonghao Liu +16
We use inelastic neutron scattering to study energy and wave vector dependence of spin fluctuations in SrCoAs, derived from SrFeCoAs iron pnictide supercond…
Intertwined magnetic and nematic orders in semiconducting KFeAgTe
Yu Song, Huibo Cao, B. C. Chakoumakos +5
Superconductivity in the iron pnictides emerges from metallic parent compounds exhibiting intertwined stripe-type magnetic order and nematic order, with itinerant electrons suggest…
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…
Unusual suppression of a spin resonance mode with magnetic field in underdoped NaFeCoAs: 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 NaFeCoAs () under applied magnetic fields.…
Local orthorhombic lattice distortions in the paramagnetic tetragonal phase of superconducting NaFeNiAs
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…
Dynamic spin-lattice coupling and nematic fluctuations in NaFeAs
Yu Li, 1 Zahra Yamani, 2 Yu Song +14
We use inelastic neutron scattering to study acoustic phonons and spin excitations in single crystals of NaFeAs, a parent compound of iron pnictide superconductors. NaFeAs exhibits…
Persistent low-energy phonon broadening near the charge order -vector in bilayer cuprate BiSrCaCuO
Yu He, Shan Wu, Yu Song +23
We report a persistent low-energy phonon broadening around r.l.u. along the Cu-O bond direction in the high- cuprate BiSrCaCuO (Bi-2212).…