193 citations · 789 across the 18 of their papers we have counts for
18 papers
Revealing a charge-density-wave gap in the predicted weak topological insulator HoSbTe
J. L. Liu, R. Liu, M. Yang +7
HoSbTe was predicted to be a weak topological insulator, whose spin-orbit coupling (SOC) gaps are reported to be as large as hundreds of meV. Utilizing infrared spectroscopy, we fi…
Inherited Weak Topological Insulator Signatures in Topological Hourglass Semimetal Nb3XTe6 (X = Si, Ge)
Q. Wan, T. Y. Yang, S. Li +17
Using spin-resolved and angle-resolved photoemission spectroscopy and first-principles calculations, we have identified bulk band inversion and spin polarized surface state evolved…
Spin fluctuation induced Weyl semimetal state in the paramagnetic phase of EuCdAs
J. -Z. Ma, S. M. Nie, C. J. Yi +22
Weyl fermions as emergent quasiparticles can arise in Weyl semimetals (WSMs) in which the energy bands are nondegenerate, resulting from inversion or time-reversal symmetry breakin…
Observation of multiple types of topological fermions in PdBiSe
B. Q. Lv, Z. -L. Feng, J. -Z. Zhao +12
Topological semimetals with different types of band crossings provide a rich platform to realize novel fermionic excitations, known as topological fermions. In particular, some fer…
Magnetic competition induced colossal magnetoresistance in n-type HgCr2Se4 under high pressures
J. P. Sun, Y. Y. Jiao, C. J. Yi +7
The n-type HgCr2Se4 exhibits a sharp semiconductor-to-metal transition (SMT) in resistivity accompanying the ferromagnetic order at TC = 106 K. Here, we investigate the effects of…
Evidence for ground state and defect-induced spin glass behaviour in the pyrochlore osmate YOsO
N. R. Davies, C. V. Topping, H. Jacobsen +14
We present AC and DC magnetometry, heat capacity, muon spin relaxation (SR) and resonant inelastic X-ray scattering (RIXS) studies of the pyrochlore osmate YOsO. We…
Magneto-elastic coupling in Fe-based superconductors
S. -F. Wu, W. -L. Zhang, V. K. Thorsmølle +12
We used polarization-resolved Raman scattering to study the magneto-elastic coupling in the parent compounds of several families of Fe-based superconductors (BaFe2As2, EuFe2As2, Na…
Crossover from itinerant to localized magnetic excitations through the metal-insulator transition in NaOsO
J. G. Vale, S. Calder, C. Donnerer +8
NaOsO undergoes a metal-insulator transition (MIT) at 410 K, concomitant with the onset of antiferromagnetic order. The excitation spectra have been investigated throu…
Robustness of topological states to lattice instability in non-symmorphic topological insulator KHgSb
D. Chen, T. T. Zhang, C. J. Yi +8
We report a polarized Raman scattering study of non-symmorphic topological insulator KHgSb with hourglass-like electronic dispersion. Supported by theoretical calculations, we show…
Disentangling the surface and bulk electronic structures of LaOFeAs
P. Zhang, J. Ma, T. Qian +7
We performed a comprehensive angle-resolved photoemission spectroscopy study of the electronic band structure of LaOFeAs single crystals. We found that samples cleaved at low tempe…
Commensurate lattice distortion in the layered titanium oxypnictides NaTiO ( As, Sb) determined by X-ray diffraction
N. R. Davies, R. D. Johnson, A. J. Princep +12
We report single crystal X-ray diffraction measurements on NaTiO ( = As, Sb) which reveal a charge superstructure that appears below the density wave transition…
New phase transition in NaTiAsO revealed by Raman scattering
D. Chen, T. T. Zhang, Z. -D. Song +8
We performed a Raman scattering study of NaTiAsO. We identified a symmetry breaking structural transition at around K, which matches a large bump in the ele…
Penetration depth measurements of K2Cr3As3 and Rb2Cr3As3
G. M. Pang, M. Smidman, W. B. Jiang +10
The newly discovered superconductors A2Cr3As3 (A = K, Rb, Cs), with a quasi-one-dimensional crystal structure have attracted considerable interest. The crystal structure consists o…
Giant spin-phonon-electronic coupling in a 5d oxide
S. Calder, J. H. Lee, M. B. Stone +8
Enhanced coupling of material properties offers new fundamental insights and routes to multifunctional devices. In this context 5d oxides provide new paradigms of cooperative inter…
Magnetic structure determination of CaLiOsO using neutron and x-ray scattering
S. Calder, M. D. Lumsden, V. O. Garlea +5
We present a neutron and x-ray scattering investigation of CaLiOsO, a material predicted to host magnetic ordering solely through an extended superexchange pathway involvin…
Magnetically driven metal-insulator transition in NaOsO3
S. Calder, V. O. Garlea, D. F. McMorrow +10
The metal-insulator transition (MIT) is one of the most dramatic manifestations of electron correlations in materials. Various mechanisms producing MITs have been extensively consi…
Large decrease in the critical temperature of superconducting LaFeAsO0.85 compounds doped with 3% atomic weight of nonmagnetic Zn impurities
Y. F. Guo, Y. G. Shi, S. Yu +10
We observed a large decrease of Tc by no more than 3 at.% of Zn doped to the optimized superconductor LaFeAsO0.85 (Tc = 26 K), confirmed by measurements of electrical resistivity,…
Continuous metal-insulator transition of the antiferromagnetic perovskite NaOsO3
Y. G. Shi, Y. F. Guo, S. Yu +11
Newly synthesized perovskite NaOsO3 shows Curie-Weiss metallic nature at high temperature and suddenly goes into an antiferromagnetically insulating state at 410 K on cooling. Elec…