E. M. Forgan

Flux quantization in a high-Tc superconductor

We have observed the quantization of magnetic flux in a high-Tc yttrium-based ceramic superconductor1 and obtain a value for the flux quantum in this material. The value of the flux quantum, h/2e where h is Plancks constant and e is the electron charge, implies that the charge carriers of superconductivity are electron pairs.

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

Competing charge, spin, and superconducting orders in underdoped YBa2Cu3Oy

_2

Implantation studies of keV positive muons in thin metallic layers

Cu

Direct Evidence for an Intrinsic Square Vortex Lattice in the Overdoped High- Tc Superconductor La1.83Sr0.17CuO4+δ

_3

Inelastic x-ray study of phonon broadening and charge-density wave formation in ortho-II-ordered YBa2Cu3O6.54

O

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

_{6.54}

Superconducting Vortices in CeCoIn5: Toward the Pauli-Limiting Field

, 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

Triangular to square flux lattice phase transition in YBa2Cu3O7.

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

The magnetic structure of CeAl2 is a non-chiral spiral

, with the in-plane component parallel to the