Measurements are reported of the magnetoresistance (MR) for fields up to 23 T in La 2 CuO
4 single crystals, which order antiferromagnetically at TN∼ 240 K, and in which the …

High-temperature superconductivity in copper oxides arises when a parent insulator
compound is doped beyond some critical concentration; what exactly happens at this …

Superconductors show zero resistance to electric current, and expel magnetic flux (the
Meissner effect) below the transition temperature (T c). In conventional superconductors, the …

When viewed as an elementary particle, the electron has spin and charge. When binding to
the atomic nucleus, it also acquires an angular momentum quantum number corresponding …

Many physical properties of high-temperature superconductors are two-dimensional
phenomena derived from their square-planar CuO2 building blocks. This is especially true of …

We report the discovery of a new phase diagram in the magnetic field-temperature plane for
single crystals of La 2 CuO 4 that show no sign of antiferromagnetic order. The phase …

We report a high-precision search for orbital-like magnetic order in the pseudogap region of
La 2− x Sr x CuO 4 single crystals using zero-field muon spin relaxation (ZF-μ SR). In …

Systematic magnetization measurements were made to study reversible magnetic properties
of a series of high-quality, large single crystals of (La 1− x Sr x) 2 CuO 4 over a composition …

Measuring the electron spin resonance of Gd spin probes we have studied the magnetic
properties of the copper oxide planes in the low-temperature tetragonal (LTT) phase of Eu …

Superconductivity in the high-transition-temperature (high-T c) copper oxides competes with
other possible ground states,. The physical explanation for superconductivity can be …