We study surface plasmon lasing based on periodic and bi-periodic groove arrays etched on a silver substrate.It is interesting to find that the bi-periodic structure can open a clear band gap of surface plasmon polari...We study surface plasmon lasing based on periodic and bi-periodic groove arrays etched on a silver substrate.It is interesting to find that the bi-periodic structure can open a clear band gap of surface plasmon polaritons near the first Brillouin zone boundary,and thus it is promising to utilize the band edge modes of surface plasmon polaritons.A low threshold for the surface plasmon lasing effect is demonstrated numerically,owing to the low group velocity of the band edge mode,which provides a feasible way to design surface plasmon lasers.展开更多
In this letter,a theoretical fit of nuclear magnetic resonance spectra of ^(63)Cu in Cu layers of Fe/Cu multilayers is given based on RKKY theory.The values of exchange field and additional Knight shift are fitted,whi...In this letter,a theoretical fit of nuclear magnetic resonance spectra of ^(63)Cu in Cu layers of Fe/Cu multilayers is given based on RKKY theory.The values of exchange field and additional Knight shift are fitted,which agree approximately with the experimental data.展开更多
Fe/Cu compositionally modulated films made by rf sputtering were investigated with ferromagnetic resonance.Spin wave resonances related to interlayer exchange coupling were observed and the phase change of the spin wa...Fe/Cu compositionally modulated films made by rf sputtering were investigated with ferromagnetic resonance.Spin wave resonances related to interlayer exchange coupling were observed and the phase change of the spin wave was shared by both the Fe and Cu sublayers.The effective spin wave dispersion coefficient was found to increase with increasing thickness of Cu sublayers.展开更多
基金Supported by the National Natural Science Foundation of China under Grant Nos 11004026,11174051,51271057,51071045 and 11074034the Program for New Century Excellent Talents in University of Ministry of Education of China(No NCET-11-0096)+1 种基金the Natural Science Fund of Jiangsu Province(No BK2012757)the National Basic Research Program of China under Grant No 2010CB923404.
文摘We study surface plasmon lasing based on periodic and bi-periodic groove arrays etched on a silver substrate.It is interesting to find that the bi-periodic structure can open a clear band gap of surface plasmon polaritons near the first Brillouin zone boundary,and thus it is promising to utilize the band edge modes of surface plasmon polaritons.A low threshold for the surface plasmon lasing effect is demonstrated numerically,owing to the low group velocity of the band edge mode,which provides a feasible way to design surface plasmon lasers.
基金Supported by National Natural Science Foundation of ChinaState Education Commission and State Key Laboratory of Magnetism.
文摘In this letter,a theoretical fit of nuclear magnetic resonance spectra of ^(63)Cu in Cu layers of Fe/Cu multilayers is given based on RKKY theory.The values of exchange field and additional Knight shift are fitted,which agree approximately with the experimental data.
基金the National Natural Science Foundation of China,State Education Commission and State Key Laboratory of Magnetism.
文摘Fe/Cu compositionally modulated films made by rf sputtering were investigated with ferromagnetic resonance.Spin wave resonances related to interlayer exchange coupling were observed and the phase change of the spin wave was shared by both the Fe and Cu sublayers.The effective spin wave dispersion coefficient was found to increase with increasing thickness of Cu sublayers.
