نتایج جستجو برای: spin distribution

تعداد نتایج: 725683  

Journal: :journal of sciences, islamic republic of iran 2012
s. amani

the synthesis, spectroscopy and magnetic characterization of five new dinuclear copper(ii) complexes are described. all five compounds have the general formula [cu2(l)4(o-r)2](cl)2 or [cu2(l)2(cl)2](cl)2, in which r = ch3 or h, l=2, 3 or 4-pyridinemethanol as l2, l3 or l4, respectively. the title compounds consist of dinuclear units with bridging methoxo groups in [cu2(l4)4(o-ch3)2](cl)2, hydro...

2004
M. ANSELMINO

The single transverse spin asymmetry in D meson production at RHIC can provide a clean measure of the gluon Sivers distribution function. At intermediate rapidity, D production is largely dominated by the elementary gg → cc̄ channel, where there cannot be any transverse spin transfer. Therefore, any transverse single spin asymmetry observed for D’s produced in pp interactions can only originate ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان فارس - دانشکده علوم پایه 1389

این واقعیت که حالت های اسپین الکترون (به جای بار الکتریکی) بسیار کمتر حساس به نوفه های الکترومغناطیسی هستند، باعث آن شده است که امروزه تلاش وافری برای توسعه دستگاههای اسپینترونیکی (به جای الکترونیکی) به عمل آید. در این راستا دسته ای ازموادکه شامل فلزات و حتی نیمه هادی های آلی هستند برای استفاده در فناوری اسپینترونیک پیشنهاد شده است. یک کاندیدای مناسب برای چنین کاربردهایی، تک لایه ای از اتم های ...

Journal: :Progress of Theoretical Physics Supplement 2013

Journal: :Physical chemistry chemical physics : PCCP 2015
Jia Wang Wim G Roeterdink Wanrun Jiang Xing Dai Yang Gao Bo Wang Yanyu Lei Zhigang Wang Rui-Qin Zhang

Asymmetry in the electronic structure of low-dimensional carbon nanomaterials is important for designing molecular devices for functions such as directional transport and magnetic switching. In this paper, we use density functional theory to achieve an asymmetric spin distribution in a typical (9,0) carbon nanotube (CNT) by capping the CNT with a fullerene hemisphere at one end and saturating t...

2009
Enzo Granato

A quantum pseudo-spin model with random spin sizes is introduced to study the effects of charging-energy disorder on the superconducting transition in granular superconducting materials. Charging-energy effects result from the small electrical capacitance of the grains when the Coulomb charging energy is comparable to the Josephson coupling energy. In the pseudo-spin model, randomness in the sp...

Journal: :Monthly Notices of the Royal Astronomical Society 2013

Journal: :Progress of Theoretical and Experimental Physics 2017

Journal: :shiraz journal of system management 0

abstract. academic spin-offs are recognized as the main means of technology transfer, contribute to the commercialization of the results of academic research, leading to society wealth creation. academic spin-offs start with some major disadvantages related to their liability of newness, smallness and their university origination. it is been argued that academic spin-off need to strengthen thei...

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