2021年3月17日 · To overcome this issue, we propose a synthetic approach to produce superconducting NbSe 2 films with a nearly isotropic large Hc2. Scalable selenization methods are tailored to create 3D...

1973年11月5日 · NbSe2, an anisotropic type II superconductor with a Tc - 7 K, appears to be the most extensively studied. Recently the anisotropy of Hc2 at 4.2 K [ 1 ] and the GinzburgLandau parameters near Tc [2, 3] have been studied, and preliminary measurements at high magnetic fields have been presented [4].

2020年3月27日 · Using field-angle-resolved magnetoresistance experiments for fields rotated in the basal plane we investigate the field-angle dependence of the upper critical field (Hc2), which directly reflects the symmetry of the superconducting order parameter.

2019年11月8日 · Resistivity measurements for a layered transition metal dichalcogenide 2H-NbSe2 were performed to investigate the in-plane anisotropy of the upper critical field (Hc2) for magnetic fields up to 14.5 T at temperatures down to 2.0 K.

1973年9月10日 · The temperature and angular dependence of upper critical fields, Hc2, have been measured for temperatures close to Tc and for those below 4.2 K on single crystals, 2H-NbSe2, by use of electrical conduction measurements.

2004年8月3日 · We report on the quantitative calculations of the upper critical field H c2 for clean type-II superconductors Nb, NbSe 2 , and MgB 2 within the weak-coupling theory. The Fermi surface anisotropy is fully taken into account by the energy band data from ab initio electronic structure calculations.

1991年5月15日 · In 2H-NbSe2 the CDW transition does not change a carrier concentration and Tc depends the mostly on the density of states in the Fermi level. In the rigid band model density of states can be change bY intercalation and hence Tc decreases in intercalated samples.

2004年11月1日 · We report on the quantitative calculations of the upper critical field Hc2 for clean type-II superconductors Nb, NbSe2, and MgB2 within the weak-coupling theory. The Fermi surface anisotropy is...

2021年3月1日 · To overcome this issue, we propose a synthetic approach to produce superconducting NbSe2 films with a nearly isotropic large Hc2. Scalable selenization methods are tailored to create 3D...

2024年9月18日 · 超导临界温度 Tc 从 NbSe2 的 7.2 K 单调下降到 Ge0.1NbSe2 的 4.9 K。 对电阻率、磁化强度和比热的研究推导出了超导和正态参数，表明双间隙超导性的抑制主要是由于费米能级 N（EF） 处电子-声子耦合参数 λe-p 和态密度降低引起的。