Single-component molecular material hosting antiferromagnetic and spin-gapped Mott subsystems

Memory effect and temperature behavior in spin valves with and without antiferromagnetic subsystems

Temperature behavior and memory effect in standard spin valves ~SV! and SVs with synthetic antiferromagnetic ~Co/Ru/Co! ~SV-SAF! subsystems have been studied. SV-SAFs show much better temperature stability. Memory effect refers to the phenomenon that the exchange bias can be altered at temperatures (TR’s) much lower than the blocking temperature (TB), and these temperatures (TR’s) are imprinted...

Single-copy entanglement in a gapped quantum spin chain.

The single-copy entanglement of a given many-body quantum system is defined [J. Eisert and M. Cramer, Phys. Rev. A 72, 042112 (2005)10.1103/PhysRevA.72.042112] as the maximal entanglement deterministically distillable from a bipartition of a single specimen of that system. For critical (gapless) spin chains, it was recently shown that this is exactly half the von Neumann entropy [R. Orús, J. I....

Theory for slightly doped antiferromagnetic mott insulators.

New trial wave functions, constructed explicitly from the unique Mott insulating state with antiferromagnetic order, are proposed to describe the ground state of a Mott insulator slightly doped with holes or electrons. A rigid band is observed as charged quasiparticles with well-defined momenta being realized in these states. These states have much less superconducting correlations than previou...

Title Gossamer superconductivity near antiferromagnetic mott

NMR Evidence for Antiferromagnetic Transition in the Single-Component Molecular System, [Cu(tmdt)2]

The magnetic state of the single-component molecular compound, [Cu(tmdt)2], is investigated by means of H-NMR. An abrupt spectral broadening below 13 K and a sharp peak in nuclear spin-lattice relaxation rate, T 1 , at 13 K are observed as clear manifestations of a second-order antiferromagnetic transition, which is consistent with the previously reported magnetic susceptibility and EPR measure...