Anisotropic magneto-optical transport properties in black phosphorus induced by in-plane magnetic field.

We study the Landau levels and magneto-optical properties of bulk black phosphorus (BP) subjected to an in-plane magnetic field along the armchair direction based on an effectivek⋅pHamiltonian. We analytically obtain the Landau levels by the perturbation method, which agrees well with the results of numerical diagonalization. By using the Kubo formula, we find the magneto-optical transition selection rules and conductance spectra for inter-band transitions are highly anisotropic.

[The impact of mitral valve morphology on the short and long-term outcome post percutaneous balloon mitral valvuloplasty in patients with mitral valve stenosis].

Objective: To investigate the short and long-term outcome post percutaneous balloon mitral valvuloplasty (PBMV) in mitral valve stenosis patients with different mitral valve morphology.

Methods: Mitral valve morphology was graded according to the Wilkins scoring system, 385 eligible patients were divided into echocardiographic scores > 8 group (n = 125) and ≤ 8 group (n = 260). Patients were followed up after PBMV according to the improved Inoue method.