5,150 research outputs found
Brief Analysis on China Rural Tourism
This paper analyzes the strengths and existing problems in the development of China rural tourism, putting forward some main countermeasures in many areas: strengthening layout and industrial management; promoting the cultural taste of rural tourism products and how to improve the construction and management level of this industry. Additionally, it is discussed in which way that exerts the government’s roles to push up corporately the development of rural tourism industry and living conditions of local people. Key words: China, Rural tourism, Strengths, problems, countermeasure Résumé: L’article présent analyse les points forts et les problèmes existant dans le développement du tourisme rural de Chine et propose des contre-mesures dans bien des domaines : le renforcement de l’arrangment et du management industriel, la promotion des produits culturels du tourisme rural et l’amélioration du niveau de construction et de management de cette industrie. En plus, l’auteur discute de quelle manière le gouvernement joue son rôle pour favoriser le développement du tourisme rural et améliorer les conditions de vie de la population locale. Mots-Clés: Chine, tourisme rural, points forts, problèmes, contre-mesur
Neutrino mu-tau reflection symmetry and its breaking in the minimal seesaw
In this paper, we attempt to implement the neutrino - reflection
symmetry (which predicts and as
well as trivial Majorana phases) in the minimal seesaw (which enables us to fix
the neutrino masses). For some direct (the preliminary experimental hints
towards and ) and indirect
(inclusion of the renormalization group equation effect and implementation of
the leptogenesis mechanism) reasons, we particularly study the breakings of
this symmetry and their phenomenological consequences.Comment: 20 pages, 7 figures, accepted for publication in JHE
Unifying ultrafast demagnetization and intrinsic Gilbert damping in Co/Ni bilayers with electronic relaxation near the Fermi surface
The ability to controllably manipulate the laser-induced ultrafast magnetic
dynamics is a prerequisite for future high speed spintronic devices. The
optimization of devices requires the controllability of the ultrafast
demagnetization time, , and intrinsic Gilbert damping, . In previous attempts
to establish the relationship between and , the rare-earth doping of a
permalloy film with two different demagnetization mechanism is not a suitable
candidate. Here, we choose Co/Ni bilayers to investigate the relations between
and by means of time-resolved magneto-optical Kerr effect (TRMOKE) via
adjusting the thickness of the Ni layers, and obtain an approximately
proportional relation between these two parameters. The remarkable agreement
between TRMOKE experiment and the prediction of breathing Fermi-surface model
confirms that a large Elliott-Yafet spin-mixing parameter is relevant to the
strong spin-orbital coupling at the Co/Ni interface. More importantly, a
proportional relation between and in such metallic films or heterostructures
with electronic relaxation near Fermi surface suggests the local spin-flip
scattering domains the mechanism of ultrafast demagnetization, otherwise the
spin-current mechanism domains. It is an effective method to distinguish the
dominant contributions to ultrafast magnetic quenching in metallic
heterostructures by investigating both the ultrafast demagnetization time and
Gilbert damping simultaneously. Our work can open a novel avenue to manipulate
the magnitude and efficiency of Terahertz emission in metallic heterostructures
such as the perpendicular magnetic anisotropic Ta/Pt/Co/Ni/Pt/Ta multilayers,
and then it has an immediate implication of the design of high frequency
spintronic devices
Electrical Control of Magnetization in Charge-ordered Multiferroic LuFe2O4
LuFe2O4 exhibits multiferroicity due to charge order on a frustrated
triangular lattice. We find that the magnetization of LuFe2O4 in the
multiferroic state can be electrically controlled by applying voltage pulses.
Depending on with or without magnetic fields, the magnetization can be
electrically switched up or down. We have excluded thermal heating effect and
attributed this electrical control of magnetization to an intrinsic
magnetoelectric coupling in response to the electrical breakdown of charge
ordering. Our findings open up a new route toward electrical control of
magnetization.Comment: 14 pages, 5 figure
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