Results 71 to 80 of about 62,639 (186)

Application of the S=1 underscreened Anderson lattice model to Kondo uranium and neptunium compounds

, 2010
Magnetic properties of uranium and neptunium compounds showing the coexistence of Kondo screening effect and ferromagnetic order are investigated within the Anderson lattice Hamiltonian with a two-fold degenerate $f$-level in each site, corresponding to $
A. C. Hewson, Acirete S. da Rosa Simões, B. Coqblin, C. Lacroix, Christopher Thomas, J. R. Iglesias, N. B. Perkins, S. Doniach   +7 more
core   +1 more source

Delocalization and conductance quantization in one-dimensional systems

, 2002
We investigate the delocalization and conductance quantization in finite one-dimensional chains with only off-diagonal disorder coupled to leads. It is shown that the appearence of delocalized states at the middle of the band under correlated disorder is
A. Levy Yeyati, A. Oguri, A. Oguri, D. C. Langreth, E. N. Economou, F. Claro, G. Theodorou, H.-S. Sim, M. Hilke, N. F. Mott, P. W. Anderson, P. W. Brouwer, P. W. Brouwer, R. E. Borland, R. H. Mckenzie, R. Shankar, Z. Y. Zeng   +16 more
core   +1 more source

Ethyl 1-(6-chloro-3-pyridylmethyl)-5-methyl-1H-1,2,3-triazole-4-carboxylate

Acta Crystallographica Section E, 2008
In the title compound, C12H13ClN4O2, the triazole ring carries methyl and ethoxycarbonyl groups, and is bound via a methylene bridge to a chloropyridine unit.
Yong-Nian Qu, Wen-Ju Liu, Feng-Mei Sun, Tian-Jia Hua   +3 more
doaj   +1 more source

Delocalization of electrons in a Random Magnetic Field

, 1995
Delocalization problem for a two-dimensional non-interacting electron system is studied under a random magnetic field. With the presence of a random magnetic field, the Hall conductance carried by each eigenstate can become nonzero and quantized in units
A. G. Aronov, A. MacKinnon, B. I. Halperin, B. I. Halperin, D. J. Thouless, D. J. Thouless, D. J. Thouless, D. Lee, D. N. Sheng, D. P. Arovas, E. Abrahams, H. Levine, L. B. Ioffe, M. Kohmoto, N. Nagaosa, P. A. Lee, Q. Niu, R. B. Laughlin, Richard E. Prange, Ronald Fisch, S. C. Zhang, T. Ando, T. Sugiyama, V. Kalmeyer, V. Kalmeyer, Y. Avishai, Y. Huo, Z. Y. Weng, Z. Y. Weng   +28 more
core   +1 more source

Density-matrix functional theory of the Hubbard model: An exact numerical study

, 1999
A density functional theory for many-body lattice models is considered in which the single-particle density matrix is the basic variable. Eigenvalue equations are derived for solving Levy's constrained search of the interaction energy functional W, which
A. D. Becke, A. Schindlmayr, B. N. Parlett, C. Lanczos, D. C. Langreth, G. M. Pastor, H. Shiba, J. A. Pople, J. Hubbard, J. Hubbard, J. K. Collum, J. Kanamori, J. P. Perdew, K. Schönhammer, K. Schönhammer, L. H. Lieb, M. C. Gutzwiller, M. Levy, O. Gunnarsson, P. Fulde, P. Hohenberg, P. W. Anderson, R. A. Donnelly, R. A. Donnelly, R. G. Parr, R. López-Sandoval, R. M. Dreizler, R. Pariser, R. Pariser, S. M. Valone, S. M. Valone, T. L. Gilbert, U. von Barth, W. Kohn   +33 more
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Dynamical simulations of charged soliton transport in conjugated polymers with the inclusion of electron-electron interactions

, 2008
We present numerical studies of the transport dynamics of a charged soliton in conjugated polymers under the influence of an external time-dependent electric field.
Barford W., Haibo Ma, Hellmann H., Ma H., Shirakawa H., Ulrich Schollwöck   +5 more
core   +1 more source

Density-Matrix functional theory of strongly-correlated lattice fermions

, 2002
A density functional theory (DFT) of lattice fermion models is presented, which uses the single-particle density matrix gamma_{ij} as basic variable. A simple, explicit approximation to the interaction-energy functional W[gamma] of the Hubbard model is ...
A. Schindlmayr, A. Svane, A.E. Carlsson, E. Dagotto, G. M. Pastor, H. Shiba, J.E. Hirsch, K. Schönhammer, L.H. Lieb, M. Imada, M. Levy, N. Furukawa, N. Furukawa, O. Gunnarsson, R. López-Sandoval, R. López-Sandoval, R.G. Hennig, S. Goedecker, T.L. Gilbert   +18 more
core   +1 more source

Coherent spin rotations in open driven double quantum dots

, 2008
We analyze the charge and spin dynamics in a DC biased double quantum dot driven by crossed DC and AC magnetic fields. In this configuration, spatial delocalization due to inter-dot tunnel competes with intra-dot spin rotations induced by the time ...
C. Cohen-Tannoudji, Carlos López-Monís, Gloria Platero, K. Blum, R. Sánchez, Rafael Sánchez   +5 more
core   +1 more source

Thermoelectrics Near the Mott Localization-Delocalization Transition

, 2009
We give an overview on current status of the theoretical research on Thermoelectricity for correlated materials. We derive the theoretical formulas which become exact at low and high temperature and discuss the intermediate temperature results.
A. Camjayi, A. Georges, A. Khurana, C.C. Hays, D.D. Sarma, G. Kotliar, G. Kotliar, G.D. Mahan, G.D. Mahan, H. Kajueter, H. Schweitzer, H.J. Xiang, I. Paul, K. Behnia, K. Held, K.F. Hsu, M. Jonson, M.L. Foo, N. Chen, T. Okuda, T. Pruschke, T. Yoshida, V.I. Anisimov, V.S. Oudovenko, V.S. Oudovenko, Y. Imai, Y. Tokura   +26 more
core   +1 more source

Understanding the Nucleophilic Character and Stability of the Carbanions and Alkoxides of 1-(9-Anthryl)ethanol and Derivatives

Molecules, 2013
The nucleophilic character and stability of the carbanions vs. alkoxides derived from 2,2,2-trifluoro-1-(9-anthryl)ethanol and 1-(9-anthryl)ethanol containing X electron-releasing and X electron-acceptor substituents attached to C-10, have been studied ...
Francisco Méndez, Ramsés E. Ramírez, Cirilo García-Martínez   +2 more
doaj   +1 more source