The Optimized Effective Potential Method and LDA + U

نویسندگان

  • Stefan Kurth
  • Stefano Pittalis
چکیده

c 2006 by John von Neumann Institute for Computing Permission to make digital or hard copies of portions of this work for personal or classroom use is granted provided that the copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. To copy otherwise requires prior specific permission by the publisher mentioned above.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

خواص ساختاری و الکترونی بلور سریم حاصل از محاسباتLDA+U

 In this work structural, electronic and magnetic properties of alpha and gamma phases of cerium crystal have been calculated by means of the LDA and LDA+U methods. The equilibrium volume and magnetic moment obtained from the GGA approximation in agreement with the experiment are equal to 27.64 Å3 and 0.00018 µB, respectively. This agreement shows that the 4f electrons in alpha phase are itiner...

متن کامل

First-principles calculations of the electronic structure and spectra of strongly correlated systems: the LDA +U method

A generalization of the local density approximation (LDA) method for systems with strong Coulomb correlations is described which gives a correct description of the Mott insulators. The LDA + U method takes into account orbital dependence of the Coulomb and exchange interactions which is absent in the LDA. The scheme can be regarded as a ‘firstprinciples’ method because there are no adjustable p...

متن کامل

محاسبه ابتدا به ساکن پارامتر هابارد در بلورهای NiO و Gd

  In this research the Hubbard parameters have been calculated for NiO and Gd crystals, as two strongly correlated systems with partially full 3d and 4f levels, respectively. The calculations were performed within the density functional theory (DFT) using the augmented plane waves plus the local orbitat (APW+lo) method. We constructed a suitable supercell and found that the Hubbard parameters f...

متن کامل

شبیه سازی خواص فیزیکی ترکیب پروسکایت (1و 0.5 و 0) BaMnxMo1-xO3 با استفاده از نظریه تابعی چگالی و تصحیح هابارد

In this paper, we have simulated the physical properties of BaMnxMo1-xO3 (x=0, 0.5, 1) perovskite compound by the density functional theory and Hubbard model, using the Espersso code. To calculate the exchange-correlation potential in the Kohn Sham equations, the generalized gradient approximation (GGA) has been used.  Also, because the calculated results indicate that U parameter plays a vital...

متن کامل

Robust linearly optimized discriminant analysis

Supervised Fisher Linear Discriminant Analysis (LDA) is a classical dimensionality reduction approach. LDA assumes each class has a Gaussian density and may suffer from the singularity problem when handling high-dimensional data. We in this work consider more general class densities and show that optimizing LDA criterion cannot always achieve maximum class discrimination with the geometrical ba...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2006