<正> Following Chen's method [Commun.Theor.Phys.52 (2009) 549] to use 8-step line tilting to realizetip tilting,to achieve finer rotation,it is discovered t
<正> In this paper,by applying Lasalle's in variance principle and some results about the trace of a matrix,we propose a method for estimating the topologic
<正> We theoretically investigate the wave-vector and temperature-dependent electron transport in a magneticnanostructure modulated by an applied bias.The large
<正> The entanglement characteristics including the so-called sudden death effect between two identical two-levelatoms trapped in two separate cavities connecte