全文获取类型
收费全文 | 122篇 |
免费 | 3篇 |
国内免费 | 1篇 |
专业分类
化学 | 34篇 |
数学 | 51篇 |
物理学 | 41篇 |
出版年
2016年 | 2篇 |
2015年 | 2篇 |
2013年 | 4篇 |
2012年 | 10篇 |
2011年 | 5篇 |
2010年 | 6篇 |
2009年 | 1篇 |
2008年 | 4篇 |
2007年 | 6篇 |
2006年 | 5篇 |
2005年 | 3篇 |
2004年 | 6篇 |
2003年 | 2篇 |
2002年 | 1篇 |
2001年 | 3篇 |
2000年 | 5篇 |
1989年 | 2篇 |
1985年 | 2篇 |
1983年 | 1篇 |
1981年 | 1篇 |
1979年 | 2篇 |
1976年 | 1篇 |
1974年 | 1篇 |
1973年 | 2篇 |
1972年 | 1篇 |
1960年 | 1篇 |
1956年 | 1篇 |
1955年 | 1篇 |
1935年 | 2篇 |
1933年 | 2篇 |
1930年 | 2篇 |
1929年 | 2篇 |
1928年 | 4篇 |
1927年 | 1篇 |
1926年 | 2篇 |
1925年 | 3篇 |
1924年 | 2篇 |
1923年 | 1篇 |
1922年 | 2篇 |
1921年 | 2篇 |
1920年 | 1篇 |
1919年 | 4篇 |
1918年 | 1篇 |
1917年 | 1篇 |
1916年 | 1篇 |
1914年 | 1篇 |
1913年 | 1篇 |
1912年 | 2篇 |
1910年 | 2篇 |
1909年 | 2篇 |
排序方式: 共有126条查询结果,搜索用时 696 毫秒
1.
Mazurenko V. V. Kvashnin Y. O. Lichtenstein A. I. Katsnelson M. I. 《Journal of Experimental and Theoretical Physics》2021,132(4):506-516
Journal of Experimental and Theoretical Physics - Dzyaloshinskii–Moriya interaction, DMI in short, represents an antisymmetric type of magnetic interactions that favor orthogonal orientation... 相似文献
2.
E. Y. Vedmedenko N. Mikuszeit T. Stapelfeldt R. Wieser M. Potthoff A. I. Lichtenstein R. Wiesendanger 《The European Physical Journal B - Condensed Matter and Complex Systems》2011,80(3):331-336
Using exact diagonalization, Monte-Carlo, and mean-field techniques, characteristic temperature scales for ferromagnetic order
are discussed for the Ising and the classical anisotropic Heisenberg model on finite lattices in one and two dimensions.
The interplay between nearest-neighbor exchange, anisotropy and the presence of surfaces leads, as a function of temperature,
to a complex behavior of the distance-dependent spin-spin correlation function, which is very different from what is commonly
expected.
A finite experimental observation time is considered in addition, which is simulated within the Monte-Carlo approach by an
incomplete statistical average.
We find strong surface effects for small nanoparticles, which cannot be explained within a simple Landau or mean-field concept
and which give rise to characteristic trends of the spin-correlation function in different temperature regimes.
Unambiguous definitions of crossover temperatures for finite systems and an effective method to estimate the critical temperature
of corresponding infinite systems are given. 相似文献
3.
4.
On heating with hydroxylamine and on subsequent treatment with ferric chloride, pyrrolidonecarboxylic acid gives a colour reaction. This reaction can be used for the quantitative estimation of glutamic acid in protein hydrolyzates since this acid is almost completely converted into pyrrohdonecarboxylic acid at 125° and pH 3–4. 相似文献
5.
6.
Lysine may be determined in protein hydrolyzates with the aid of lysine decarboxylase contained in cell-free extracts of Salmonella hadar grown under suitable conditions. 相似文献
7.
A theory of the metal-insulator transition in vanadium dioxide from the high- temperature rutile to the low- temperature monoclinic phase is proposed on the basis of cluster dynamical mean-field theory, in conjunction with the density functional scheme. The interplay of strong electronic Coulomb interactions and structural distortions, in particular, the dimerization of vanadium atoms in the low-temperature phase, plays a crucial role. We find that VO2 is not a conventional Mott insulator, but that the formation of dynamical V-V singlet pairs due to strong Coulomb correlations is necessary to trigger the opening of a Peierls gap. 相似文献
8.
Pavarini E Biermann S Poteryaev A Lichtenstein AI Georges A Andersen OK 《Physical review letters》2004,92(17):176403
Using t(2g) Wannier functions, a low-energy Hamiltonian is derived for orthorhombic 3d(1) transition-metal oxides. Electronic correlations are treated with a new implementation of dynamical mean-field theory for noncubic systems. Good agreement with photoemission data is obtained. The interplay of correlation effects and cation covalency (GdFeO3-type distortions) is found to suppress orbital fluctuations in LaTiO3 and even more in YTiO3, and to favor the transition to the insulating state. 相似文献
9.
We present an ab initio quantum theory of the metal-insulator transition in Ti2O3. The recently developed cluster LDA+DMFT scheme is applied to describe the many-body features of this compound. The conventional single site DMFT cannot reproduce a low temperature insulating phase for any reasonable values of the Coulomb interaction. We show that the nonlocal Coulomb interactions and the strong chemical bonding within the Ti-Ti pair is the origin of the small gap insulating ground state of Ti2O3. 相似文献
10.