Z. Z. Li

TL;DR: In this article, the authors used angle-resolved photoemission with circularly polarized light and found that left-circularly polarized photons give a different photocurrent than right-circling polarized photons, and therefore the state below T* is rather unusual, in that it breaks time reversal symmetry.

TL;DR: In this article, the authors measured the low-temperature resistivity of the bi-layer cuprate Bi2212 and found that it exhibits a $T$-linear dependence with the same slope as in the single layer cuprates Bi2201, Nd-LSCO and LSCO, despite their very different Fermi surfaces and structural, superconducting and magnetic properties.

TL;DR: Angle resolved photoemission on underdoped Bi2Sr2CaCu2O8 reveals that the magnitude and d-wave anisotropy of the superconducting state energy gap are independent of temperature all the way up to T{c}; this lack of T variation of the entire k-dependent gap is in marked contrast to mean field theory.

TL;DR: In this article, the in-plane optical conductivity of Bi2Sr2CaCu2O 8 + δ films with small carrier density up to large carrier density (overdoped) was derived from accurate reflectivity data.

TL;DR: In this article, the authors show that the single-layer tetragonal superconductor Tl2Ba2CuO6+δ has pure pairing symmetry, providing a starting point for understanding the more complex mixed s + d state that appears to characterize other high-temperature superconductors.