Nicolas Laflorencie,1 Heiko Rieger,2 Anders W. Sandvik,3 and Patrik Henelius4 1Laboratoire de Physique Théorique, CNRS-UMR5152 Université Paul Sabatier, F-31062 Toulouse, France 2Theoretische Physik, Universität des Saarlandes, 66041 Saarbrücken, Germany 3Department of Physics, Åbo Akademi University, Porthansgatan 3, FIN-20500 Turku, Finland 4Condensed Matter Theory, Physics Department, KTH, S...

An analysis of electron spin resonance (ESR) spectra from compositions along the liquidordered (Lo) and liquid-disordered (Ld) coexistence curve from the brain-sphingomyelin/ dioleoylphosphatidylcholine/cholesterol (SPM/DOPC/Chol) model lipid system was performed to characterize the dynamic structure on a molecular level of these coexisting phases. We obtained 200 continuous-wave ESR spectra fr...

The rich variety of iron-based superconductors and their complex electronic structure lead to a wide range of possibilities for gap symmetry and pairing components. Here we solve in the two-Fe Brillouin zone the full frequency-dependent linearized Eliashberg equations to investigate spin-fluctuations mediated Cooper pairing for LiFeAs. The magnetic excitations are calculated with the random pha...

Bismuth is an archetypal semimetal with gigantic spin-orbit coupling and it has been a major source material for the discovery of seminal phenomena in solid state physics more than century. In recent years, spin current transports bismuth have also attracted considerable attention. this paper, we theoretically study both Hall effect (SHE) Nernst (SNE) bismuth, based on relativistic band structu...

Spin transition has attracted the interest of researchers in various fields since the early 1930s, with thousands of examples now recognized, including those in minerals and biomolecules. However, so far the metal centres in which it has been found to occur are almost always octahedral six-coordinate 3d(4) to 3d(7) metals, such as Fe(II). A five-coordinate centre is only rarely seen. Here we re...

We consider a general class of boundary terms of the open XYZ spin-1/2 chain compatible with integrability. We have obtained the general elliptic solution of K-matrix obeying the boundary Yang-Baxter equation using the R-matrix of the eight vertex model and derived the associated integrable spin-chain Hamiltonian. 1+1 dimensional integrable models with boundaries find interesting applications i...

The spin s quantum spin chain and the alternating s1, s2 (s1 − s2 = 12) spin chain with boundaries are considered. The scattering of their excitations with the boundaries via the Bethe ansatz method is studied, and the exact boundary S matrices are computed in the limit s, s1,2 → ∞. Moreover, the connection of these models with the SU(2) Principal Chiral, WZW and the RSOS models is discussed. e...