Relation of Quantum Magnetic Excitations with Stripes?!

Stripe formation is a good way to interpret the coexistence of antiferromagnetism order and superconductivity in HTSCs. However, the spectrum of magnetic excitation of YBCO is not consistent with the theoretical prediction for a material including stripes. A group of scientists from the USA, UK, and Japan have investigated this contraction by measuring inelastic neutron [...]

Are HTSCs Quantum Protectorate!?

“Quantum protector” (QP) is a macroscopic quantum (for example quantum Hall effect and flux quantization of superconductivity) that is usually unaffected by imperfection, impurities and thermal fluctuations. In this state the excitations are collective excitations of the whole system rather than usual elementary excitations in many-body systems such as in Fermi liquid. P.W. Anderson believes that [...]

Electronic Liquid Crystals in HTSCs

Quantum fluctuations of electrons depending to its strength could create different kind of electronic order: solid, liquid, or liquid crystal such as nematic and smectic phases. A group of scientist from the United States has theoretically investigated these orders in the doped two dimensional (2D) antiferromagnet lattices, which is especially important to understand the various [...]