B. G. Ueland

Pressure-induced half-collapsed-tetragonal phase in CaKFe4As4

We report the temperature-pressure phase diagram of

Fragile antiferromagnetism in the heavy-fermion compound YbBiPt

{mathrm{CaKFe}}_{4}{mathrm{As}}_{4}

Effective One-Dimensional Coupling in the Highly Frustrated Square-Lattice Itinerant Magnet CaCo2-yAs2

established using high-pressure electrical resistivity, magnetization, and high-energy x-ray diffraction measurements up to 6 GPa. With increasing pressure, both resistivity and magnetization data show that the bulk superconducting transition of

High-resolution x-ray diffraction study of the heavy-fermion compound YbBiPt

{mathrm{CaKFe}}_{4}{mathrm{As}}_{4}

Reduction of the ordered magnetic moment and its relationship to Kondo coherence in

is suppressed and then disappears at

Doping evolution of spin fluctuations and their peculiar suppression at low temperatures in Ca(Fe1–xCox)2As2

pensuremath{gtrsim}4

Distinct pressure evolution of coupled nematic and magnetic order in FeSe

GPa. High-pressure x-ray data clearly indicate a phase transition to a collapsed tetragonal phase in

Suppression of antiferromagnetic spin fluctuations in superconducting Cr0.8Ru0.2

{mathrm{CaKFe}}_{4}{mathrm{As}}_{4}

Reduction of the ordered magnetic moment and its relationship to Kondo coherence in Ce1−xLaxCu2Ge2

under pressure that coincides with the abrupt loss of bulk superconductivity near 4 GPa. The x-ray data, combined with resistivity data, indicate that the collapsed tetragonal transition line is essentially independent of pressure, occurring at 4.0(5) GPa for temperatures below 150 K. Density functional theory calculations also find a sudden transition to a collapsed tetragonal state near 4 GPa, as As-As bonding develops across the Ca layer. Bonding across the K layer only occurs for

Reduction of the ordered-magnetic moment and its relationship to Kondo coherence in Ce 1- x La x Cu 2 Ge 2

pensuremath{ge}12