Electromagnetically induced second-order Talbot effect

The electromagnetically induced Talbot effect (EITE) offers a nondestructive and lensless way to image ultracold atoms or molecules (We

Photoionization of Electrons in Degenerate Energy Level of Hydrogen Atom Induced by Strong Laser Pulses

Photoionization dynamics of bounded electrons in the ground state, the first and second excited states of a hydrogen atom, triggered by ultrashort near-infrared laser pulses, have been investigated in a transition regime (γ∼1) that offers both multiphoton and tunneling features. Significant differences in spectral characteristics are found between the three low-energy states. The H(2s) ionization probability is larger than the H(2p) value with a special oscillating structure, but both are much greater than the ground state H(1s) in a wide range of laser intensities. By comparing the momentum spectrum and angular distributions of low-energy photoelectrons released from these degenerate states, we find the H(2p) state shows a stronger long-range Coulomb attraction force than the H(2s) state on account of the difference in the initial electron wave packet. Furthermore, analysis of the photoelectron momentum distributions sheds light on both the first and second excited states with a symmetrical intercycle interference structure in a multicycle field but an intracycle interference of an asymmetric left-handed or right-handed rotating spectrum in a few-cycle field. By analyzing photoelectron spectroscopy, we identify the parity characteristics of photoelectrons in different energy intervals and their corresponding above-threshold single-photon ionization (ATSI) or above-threshold double-photon ionization (ATDI) processes. We finally present the momentum distributions of the electrons ionized by laser pulses with different profiles and find the carrier-envelope phase (CEP) is a strong factor in deciding the rotating structure of the emission spectrum, which provides a new method to distinguish the CEP of few-cycle pulses

Acculturation of rural households participating in a clean development mechanism forest carbon sequestration program: A survey of Yi ethnic areas in Liangshan, China

© 2018 Department of Forest Economics, Swedish University of Agricultural Sciences, Umeå We present results from a survey of rural households of the Yi people that participated in the clean development mechanism forest carbon sequestration project in Liangshan, Sichuan, China. We analyze rural households’ acculturation strategies and the corresponding influencing factors of local traditional culture and modern commercial culture with forestation and a reforestation carbon sequestration project based on two dimensions and four strategies, viz., integration, assimilation, separation, and marginalization. Results indicate that rural households that took part in the forest carbon sequestration project had a higher identification with local traditional culture than with modern commercial culture. Integration and separation were two primary adaptation strategies toward traditional culture and modern commercial culture. Gender, age, education level, and land area involved in the project were significant determinants for rural households’ cultural adaptation strategies

Magnon Torque Transferred into a Magnetic Insulator through an Antiferromagnetic Insulator

Electrical spin-orbit torque (SOT) in magnetic insulators (MI) has been intensively studied due to its advantages in spin-orbitronic devices with ultralow energy consumption. However, the magnon torque in the MIs, which has the potential to further lower the energy consumption, still remains elusive. In this work, we demonstrate the efficient magnon torque transferred into an MI through an antiferromagnetic insulator. By fabricating a Pt/NiO/Tm3Fe5O12 heterostructure with different NiO thicknesses, we have systematically investigated the evolution of the transferred magnon torque. We show that the magnon torque efficiency transferred through the NiO into the MI can retain a high value (∼50%), which is comparable to the previous report for the magnon torque transferred into the metallic magnet. Our study manifests the feasibility of realizing the pure magnon-based spin-orbitronic devices with ultralow energy consumption and high efficiency

Acculturation of rural households participating in a clean development mechanism forest carbon sequestration program: A survey of Yi ethnic areas in Liangshan, China

© 2018 Department of Forest Economics, Swedish University of Agricultural Sciences, Umeå We present results from a survey of rural households of the Yi people that participated in the clean development mechanism forest carbon sequestration project in Liangshan, Sichuan, China. We analyze rural households’ acculturation strategies and the corresponding influencing factors of local traditional culture and modern commercial culture with forestation and a reforestation carbon sequestration project based on two dimensions and four strategies, viz., integration, assimilation, separation, and marginalization. Results indicate that rural households that took part in the forest carbon sequestration project had a higher identification with local traditional culture than with modern commercial culture. Integration and separation were two primary adaptation strategies toward traditional culture and modern commercial culture. Gender, age, education level, and land area involved in the project were significant determinants for rural households’ cultural adaptation strategies