N. B. Christensen

X-Ray Diffraction Observations of a Charge-Density-Wave Order in Superconducting Ortho-II YBa2Cu3O6.54 Single Crystals in Zero Magnetic Field

X-ray diffraction measurements show that the high-temperature superconductor YBa

Electronic Phase Separation in the Slightly Underdoped Iron Pnictide Superconductor Ba1-xKxFe2As2

_2

Dispersive excitations in the high-temperature superconductor La2-xSrxCuO4

Cu

Competing charge, spin, and superconducting orders in underdoped YBa2Cu3Oy

_3

Magnetic-field-enhanced incommensurate magnetic order in the underdoped high-temperature superconductor YBa2Cu3O6.45.

O

Magnetic field controlled charge density wave coupling in underdoped YBa2Cu3O6+x

_{6.54}

Rotated Stripe Order and its Competition with Superconductivity in La1.88Sr0.12CuO4

, with ortho-II oxygen order, has charge density wave order (CDW) in the absence of an applied magnetic field. The dominant wavevector of the CDW is

Quantum dynamics and entanglement of spins on a square lattice.

\mathbf{q}_{\mathrm{CDW}} = (0, 0.328(2), 0.5)

Field{Controlled Magnetic Order in the Quantum Spin{Ladder System (Hpip)2CuBr4

, with the in-plane component parallel to the

Magnetic-Field-Induced Soft-Mode Quantum Phase Transition in the High-Temperature Superconductor La1:855Sr0:145CuO4: An Inelastic Neutron-Scattering Study

\mathbf{b}