The fluctuating population of Sm 4f configurations in topological Kondo insulator SmB explored with high-resolution X-ray absorption and emission spectra.

High-resolution partial-fluorescence-yield X-ray absorption and resonant X-ray emission spectra were used to characterize the temperature dependence of Sm 4f configurations and orbital/charge degree of freedom in SmB. The variation of Sm 4f configurations responds well to the formed Kondo gap, below 140 K, and an in-gap state, below 40 K. The topological in-gap state is correlated with the fluctuating population of Sm 4f configurations that arises via carrier transfer between 3d4f and 3d4f states; both states are partially delocalized, and the mediating 5d orbital plays the role of a transfer path.

Influence of Fe substitution on the Jahn-Teller distortion and orbital anisotropy in orthorhombic Y(Mn1-xFex)O3 epitaxial films.

Multiferroic YMn1-xFexO3(020) (x = 0.125, 0.25, 0.

Characteristics of fibrillatory activities during spontaneous termination of paroxysmal atrial fibrillation: new insight from high-density right atrium frequency mapping.

Background: Sinus node (SN) activity is difficult to assess during atrial fibrillation (AF). The aim of the present study was to investigate SN activity by frequency analysis during AF.

Methods: Thirteen patients with paroxysmal AF and atrial flutter in the right atrium (RA) underwent 3-dimensional noncontact mapping.

Cavotricuspid isthmus: anatomy, electrophysiology, and long-term outcome of radiofrequency ablation.

The cavotricuspid isthmus (CTI) had a complex architecture with an anisotropic conduction property. An incremental pacing from the low right atrial isthmus produced a conduction delay and block, and initiated atrial flutter. Radiofrequency catheter ablation of the CTI was very effective in eliminating the typical atrial flutter.

Conduction barriers of atrial flutter: relation to the anatomy.

Atrial flutter (AFL) is a common arrhythmia in clinical practice. Several experimental models such as tricuspid ring model, tricuspid regurgitation model, and atrial crush injury model have provided important information about the role of conduction barriers in the reentrant circuit. Human typical AFL uses the tricuspid annulus as the anterior barrier, and uses the crista terminalis, Eustachian ridge, and sometimes sinus venosa as the posterior boundary.

Electrophysiological mechanisms of atrial flutter.

Atrial flutter (AFL) is a common arrhythmia in clinical practice. Several experimental models such as tricuspid regurgitation model, tricuspid ring model, sterile pericarditis model and atrial crush injury model have provided important information about reentrant circuit and can test the effect of antiarrhythmic drugs. Human atrial flutter has typical and atypical forms.