Type-II Ising Pairing in Few-Layer Stanene

Spin-orbit coupling has proven indispensable in realizing topological materials and more recently Ising pairing in two-dimensional superconductors. This pairing mechanism relies on inversion symmetry breaking and sustains anomalously large in-plane polarizing magnetic fields whose upper limit is expected to diverge at low temperatures, although experimental demonstration of this has remained elusive due to the required fields. In this work, the recently discovered superconductor few-layer stanene, i.e. epitaxially strained $\alpha$-Sn, is shown to exhibit a new type of Ising pairing between carriers residing in bands with different orbital indices near the $\Gamma$-point. The bands are split as a result of spin-orbit locking without the participation of inversion symmetry breaking. The in-plane upper critical field is strongly enhanced at ultra-low temperature and reveals the sought for upturn

A primary Rosai-Dorfman-Destombes disease of the scalp: case report and literature review

BackgroundRosai-Dorfman-Destombes disease (RDD) was first described in 1965 as a benign histiocytic proliferative disorder of unknown cause. Cases of RDD limited to cutaneous tissue have been reported over the past few decades, but single cutaneous RDD of the scalp is rare.Case presentationWe report a 31-year-old male with a lump on the parietal scalp without extranodal lesion lasting 1 month with gradual enlargement. The surgical incision ruptured with purulent after the first resection. Then the patient was treated with plastic surgery after disinfection and antibiotic treatment. Finally, he recovered well and discharged after 20 days.ConclusionsRDD of the scalp is rare. Surgical incision can cure the lesion but it may become infected because of increased lymphocytic infiltration. Early diagnosis and differential diagnosis of RDD are necessary. For treatment, individualized therapy is critical to patient prognosis

Plasmoid ejection and secondary current sheet generation from magnetic reconnection in laser-plasma interaction

Reconnection of the self-generated magnetic fields in laser-plasma interaction was first investigated experimentally by Nilson {\it et al.} [Phys. Rev. Lett. 97, 255001 (2006)] by shining two laser pulses a distance apart on a solid target layer. An elongated current sheet (CS) was observed in the plasma between the two laser spots. In order to more closely model magnetotail reconnection, here two side-by-side thin target layers, instead of a single one, are used. It is found that at one end of the elongated CS a fan-like electron outflow region including three well-collimated electron jets appears. The ($>1$ MeV) tail of the jet energy distribution exhibits a power-law scaling. The enhanced electron acceleration is attributed to the intense inductive electric field in the narrow electron dominated reconnection region, as well as additional acceleration as they are trapped inside the rapidly moving plasmoid formed in and ejected from the CS. The ejection also induces a secondary CS

Dorsalis Pedis Artery Blood Pressure is a Good indicator for Blood Pressure Monitoring during Shock and Recovery

Abstract To compare Supine ankle dorsalis pedis artery and brachial artery blood pressure in patients during shock resuscitation and of different ages was compared, in order to evaluate the clinical value of ankle dorsalis pedis artery blood press monitoring. 80 hypovolemic shock (trauma, hemorrhagic shock) patients and 150 selected patients, including 50 children, 50 young and 50 old patients, were enrolled in this study. The left dorsalis pedis artery and brachial blood pressure were monitored by multi-function monitor in all patients. We observed a correlation between dorsalis pedis artery blood pressure and brachial blood pressure during the period of shock and the recovery with the use of vasoactive drugs. In addition, the values of dorsalis pedis artery blood pressure and brachial blood pressure were significantly correlated in three groups with different ages. There is a positive correlation between dorsalis pedis artery blood pressure and brachial blood pressure in the state of shock and recovery as well as in populations of different ages. Monitoring dorsalis pedis artery blood pressure can reflect the hemodynamic changes timely and accurately, and has important clinical value