Shan Jiang

Effect of interlayer coupling on the coexistence of antiferromagnetism and superconductivity in Fe pnictide superconductors: A study of Ca 0.74 ( 1 ) La 0.26 ( 1 ) ( Fe 1 − x Co x ) As 2 single crystals

Shan Jiang, Lian Liu, Michael Schütt, Alannah M. Hallas, Bing Shen, Wei Tian, Eve Emmanouilidou, Aoshuang Shi, Graeme M. Luke, Yasutomo J. Uemura, Rafael. M. Fernandes, and Ni Ni ∗ Department of Physics and Astronomy and California NanoSystems Institute, University of California, Los Angeles, CA 90095, USA Department of Physics, Columbia University, New York, NY 10027, USA School of Physics and Astronomy, University of Minnesota, Minneapolis, MN 55455, USA Department of Physics, McMaster University, Hamilton, Ontario, L8S 4M1, Canada Quantum Condensed Matter Division, Oak Ridge National Laboratory, Oak Ridge, TK 37831, USA Department of Physics and Astronomy, University of California, Los Angeles, CA 90095, USA

The structural and magnetic phase transitions in Ca0.73La0.27FeAs2 with electron overdoped FeAs layers.

Here we report a study of the Ca0.73La0.27FeAs2 single crystals. We unravel a monoclinic to triclinic phase transition at 58 K, and a paramagnetic to stripe antiferromagnetic (AFM) phase transition at 54 K, below which spins order 45° away from the stripe direction. Furthermore, we demonstrate this material is substantially structurally untwinned at ambient pressure with the formation of spin rotation walls (S-walls). Finally, in addition to the central-hole and corner-electron Fermi pockets usually appearing in FPS, angle-resolved photoemission (ARPES) measurements resolve a Fermiology where an extra electron pocket of mainly As chain character exists at the Brillouin zone edge.We report a comprehensive study of single crystals of the newly discovered 112 iron pnictide superconductors (FBS). In Ca

Nonlinear and time-resolved optical study of the 112-type iron-based superconductor parent Ca 1 − x La x FeAs 2 across its structural phase transition

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Physical properties and electronic structure of a new barium titanate suboxide Ba1+δTi13−δO12 (δ = 0.11)

La

Structural and magnetic phase transitions inCa0.73Le0.27FeAs2with electron-overdoped FeAs layers

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Naturally structurally detwinned Fe pnictide superconducting family with metallic spacer layers

FeAs

Physical properties and electronic structure of a new barium titanate suboxide Ba1+δTi13-δO₁₂ (δ = 0.11)

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Physical properties and electronic structure of a new barium titanate suboxide Ba{sub 1+δ}Ti{sub 13−δ}O{sub 12} (δ = 0.11)

, we unraveled a monoclinic to triclinic phase transition at 58 K, and a paramagnetic to stripe antiferromagnetic (AFM) phase transition at 54 K, below which a distinct magnetic structure appears with the spins ordering 45

Anomalous Hall Effect in topological Heusler semimetal ZrCo2Sn.

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Erratum: Structural and magnetic phase transitions in Ca0.73La0.27FeAs2 with electron-overdoped FeAs layers (Physical Review B - Condensed Matter and Materials Physics (2016) 93 (054522))

away from the stripe direction. Both phase transitions can be suppressed upon Co substitution on Fe sites and bulk superconductivity is stabilized up to 20 K. Furthermore, we demonstrate, as the structural and chemical consequences of the As chains in the spacer layers, this magnetic FBS is naturally structurally detwinned at ambient pressure with the formation of spin rotation walls (S-walls). Finally, in addition to the central-hole and corner-electron Fermi pockets usually appearing in FBS, angle-resolved photoemission (ARPES) measurements resolve a novel Fermiology where an extra electron pocket exists at the Brillouin zone edge with the As chain character. These unique features open a new avenue to clarify the role of electronic nematicity and metallic spacer layer in affecting the superconductivity.