Physical condition for the spin-resolved exchange correlation kernel for an inhomogeneous many-electron system
نویسندگان
چکیده
منابع مشابه
Spin-resolved mapping of spin contribution to exchange-correlation holes.
By means of spin-polarized electron coincidence spectroscopy we explore the fundamental issue of spin-resolved contributions to the exchange-correlation hole in many-electron systems. We present a joint experimental and theoretical study of correlated electron pair emission from a ferromagnetic Fe(001) surface induced by spin-polarized low-energy electrons. We demonstrate that the contribution ...
متن کاملGeneralized gradient approximation for the exchange-correlation hole of a many-electron system.
We construct a generalized gradient approximation ~GGA! for the density nxc(r,r1u) at position r1u of the exchange-correlation hole surrounding an electron at r, or more precisely for its system and spherical average ^nxc(u)&5(4p) *dV u N *dr n(r)nxc(r,r1u). Starting from the second-order density gradient expansion, which involves the local spin densities n↑(r),n↓(r) and their gradients 1n↑(r),...
متن کاملan appropriate model for exchange rate predictability in iran: comparing potential forecastability
nowadays in trade and economic issues, prediction is proposed as the most important branch of science. existence of effective variables, caused various sectors of the economic and business executives to prefer having mechanisms which can be used in their decisions. in recent years, several advances have led to various challenges in the science of forecasting. economical managers in various fi...
Antiadiabatic limit of the exchange-correlation kernels of an inhomogeneous electron gas
V. U. Nazarov,1,2 I. V. Tokatly,3,4 S. Pittalis,5 and G. Vignale5 1Research Center for Applied Sciences, Academia Sinica, Taipei 115, Taiwan 2Department of Physical Chemistry, Far-Eastern National Technical University, Vladivostok, Russia 3Nano-Bio Spectroscopy group and ETSF Scientific Development Centre, Departamento de Física de Materiales, Centro de Física de Materiales CSIC-UPV/EHU-MPC, Un...
متن کاملRigorous description of exchange-correlation energy of many-electron systems.
With the eigenfunctional theory, we study a general interacting electron system, and give a rigorous expression of its ground state energy, which is composed of two parts: one part is contributed by the non-interacting electrons, and the other one is represented by the correlation functions that are controlled by the electron correlation. Moreover, according to the rigorous expression of the gr...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review B
سال: 2006
ISSN: 1098-0121,1550-235X
DOI: 10.1103/physrevb.74.113307