197 citations · 1.4k across the 41 of their papers we have counts for
13 papers · 1 filter
Contrasting electron-phonon interaction between electron- and hole-doped cuprates
Qinda Guo, Ke-Jun Xu, Magnus H. Berntsen +15
Spin- and charge-lattice interactions are potential key factors in the microscopic mechanism of high-temperature superconductivity in cuprates. Although both interactions can drama…
Anomalous normal state gap in an electron-doped cuprate
Ke-Jun Xu, Junfeng He, Su-Di Chen +11
In the underdoped n-type cuprate Nd2-xCexCuO4, long-ranged antiferromagnetic order reconstructs the Fermi surface, resulting in a putative antiferromagnetic metal with small pocket…
Bogoliubov Quasiparticle on the Gossamer Fermi Surface in Electron-Doped Cuprates
Ke-Jun Xu, Qinda Guo, Makoto Hashimoto +14
In contrast to hole-doped cuprates, electron-doped cuprates consistently exhibit strong antiferromagnetic correlations with a commensurate (π, π) ordering wave vector, leading to t…
Enhanced charge density wave with mobile superconducting vortices in LaSrCuO
J. -J. Wen, W. He, H. Jang +13
Superconductivity in the cuprates is found to be intertwined with charge and spin density waves. Determining the interactions between the different types of order is crucial for un…
Fermi surface reconstruction in electron-doped cuprates without antiferromagnetic long-range order
J. -F. He, C. R. Rotundu, M. S. Scheurer +12
Fermi surface (FS) topology is a fundamental property of metals and superconductors. In electron-doped cuprate Nd2-xCexCuO4 (NCCO), an unexpected FS reconstruction has been observe…
Three dimensional collective charge excitations in electron-doped cuprate superconductors
M. Hepting, L. Chaix, E. W. Huang +17
High temperature cuprate superconductors consist of stacked CuO2 planes, with primarily two dimensional electronic band structures and magnetic excitations, while superconducting c…
Specific heat of BaKFeAs, and a new method for identifying the electron contribution: two electron bands with different energy gaps in the superconducting state
C. R. Rotundu, T. R. Forrest, N. E. Phillips +1
We report measurements of the specific heat of BaKFeAs, an Fe-pnictide superconductor with = 36.9 K, for which there are suggestions of an unusu…
High-pressure effects on single crystals electron-doped rCeCuO
C. R. Rotundu, V. V. Struzhkin, M. S. Somayazulu +3
We present high pressure diamond anvil cell synchrotron X-ray, resistivity, and ac-susceptibility measurements on electron-doped cuprate PrCeCuO to much higher…
Heat capacity study of BaFeAs: effects of annealing
C. R. Rotundu, B. Freelon, T. R. Forrest +9
Heat-capacity, X-ray diffraction, and resistivity measurements on a high-quality BaFeAs sample show an evolution of the magneto-structural transition with successive an…
Phase diagram of the PrFeAsOF superconductor
C. R. Rotundu, D. T. Keane, B. Freelon +5
The electronic phase diagram of PrFeAsOF (0x0.225) has been determined using synchrotron X-ray powder diffraction, magnetization and resistivity measureme…
Magnetoresistance of PrLaOsSb: Disentangling local crystalline-electric-field physics and lattice effects
C. R. Rotundu, K. Ingersent, B. Andraka
Resistivity measurements were performed on PrLaOsSb single crystals at temperatures down to 20 mK and in fields up to 18 T. The results for dilute-Pr samples…
Evolution of superconductivity in PrLaOsSb: Upper critical field measurements
C. R. Rotundu, H. Tsujii, P. Kumar +4
Measurements of the upper critical field near of PrLaOsSb were performed by specific heat. A positive curvature in versus wa…
A Collective Heavy Fermion State and Superconductivity in PrLaOsSb: Specific Heat and Susceptibility Study
C. R. Rotundu, P. Kumar, B. Andraka
Low temperature susceptibility and specific heat for single crystals of PrLaOsSb (0 ) are reported. La-doping leaves CEF energies of Pr esse…