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High-energy magnetic excitations in BiSrCaCuO: Towards a unified description of the electronic and magnetic degrees of freedom in the cuprates
M. P. M. Dean, A. J. A. James, R. S. Springell +10
We investigate the high-energy magnetic excitation spectrum of the high- cuprate superconductor BiSrCaCuO (Bi-2212) using Cu edge resonant inelastic…
Coupled Spin-Orbital Texture in a Prototypical Topological Insulator
Y. Cao, J. A. Waugh, N. C. Plumb +9
One of the most important properties of topological insulators (TIs) is the helical spin texture of the Dirac surface states, which has been theoretically and experimentally argued…
Coexistence of Two Sharp-Mode Couplings and Their Unusual Momentum Dependence in the Superconducting State of Bi2Sr2CaCu2O8+d Superconductor Revealed by Laser-Based Angle-Resolved Photoemission
Junfeng He, Wentao Zhang, Jin Mo Bok +20
Super-high resolution laser-based angle-resolved photoemission measurements have been carried out on Bi2Sr2CaCu2O8+d (Bi2212) superconductors to investigate momentum dependence of…
Symmetry Protected Josephson Supercurrents in Three-Dimensional Topological Insulators
Sungjae Cho, Brian Dellabetta, Alina Yang +6
Coupling the surface state of a topological insulator (TI) to an s-wave superconductor is predicted to produce the long-sought Majorana quasiparticle excitations. However, supercon…
In-Plane Orbital Texture Switch at the Dirac Point in the Topological Insulator Bi2Se3
Yue Cao, J. A. Waugh, X. -W. Zhang +13
Topological insulators are novel macroscopic quantum-mechanical phase of matter, which hold promise for realizing some of the most exotic particles in physics as well as applicatio…
Collapse of the Fermi surface and fingerprints of order in the pseudogap state of cuprate superconductors
Takeshi Kondo, Ari Palczewski, Yoichiro Hamaya +6
The Fermi surface in the state of cuprates is highly unusual because it appears to consist of disconnected segments called arcs. Their very existence challenges the traditional con…