Zobrazeno 1 - 10
of 60
pro vyhledávání: '"Ning-Hua Tong"'
Publikováno v:
Physical Review Research, Vol 2, Iss 4, p 043407 (2020)
We propose an energy-scale correspondence between the Mott physics and the Kondo lattice physics and construct a tentative phase diagram of their correlated electrons with two characteristic energy scales ω^{*} and Ω marking the upper boundary of a
Externí odkaz:
https://doaj.org/article/c308b9cab8404b62a710101d8b047d2a
We investigate the interplay between the Kondo effect and the ferromagnetism by an one dimension Anderson impurity model with a spin partially polarized bath, using the projective truncation approximation under Lacroix basis.The equal-time spatial sp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::54b0c2a88efaddd2ac36ec6e6c73079e
http://arxiv.org/abs/2210.05966
http://arxiv.org/abs/2210.05966
Publikováno v:
Physical review. E. 106(1-1)
In this paper, we first develop the projective truncation approximation (PTA) in the Green's function equation of motion (EOM) formalism for classical statistical models. To implement PTA for a given Hamiltonian, we choose a set of basis variables an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9dece8f09b6303dabc27d734915bed8a
https://pubmed.ncbi.nlm.nih.gov/35974601
https://pubmed.ncbi.nlm.nih.gov/35974601
Autor:
Kou-Han Ma, Ning-Hua Tong
Publikováno v:
Physical Review B. 104
We investigate the phase diagram of spinless fermions on a square lattice with nearest-neighbor interaction, using the recently developed projective truncation approximation in Green's function equation of motion. For attractive interaction, the grou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::895c318012dae3a7502d9727bcb1eb2f
https://doi.org/10.1103/physrevb.104.155116
https://doi.org/10.1103/physrevb.104.155116
Publikováno v:
Solid State Communications. 357:114982
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f25075bbd3fe5bc00bc35d56d7b8747d
https://doi.org/10.1016/j.ssc.2022.114982
https://doi.org/10.1016/j.ssc.2022.114982
Publikováno v:
Computer Physics Communications. 235:196-209
We implement the Lanczos algorithm on natural orbital basis to solve the zero-temperature Green's function of Anderson impurity models, following the work of Y. Lu, M. H\"{o}ppner, O. Gunnarsson, and M. W. Haverkort, Phys. Rev. B {\bf 90} (2014) 0851
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e18bbdb68b006062461d0adcac0448d5
https://doi.org/10.1016/j.cpc.2018.09.002
https://doi.org/10.1016/j.cpc.2018.09.002
Publikováno v:
Physical Review Research. 2
We propose an energy-scale correspondence between the Mott physics and the Kondo lattice physics and construct a tentative phase diagram of their correlated electrons with two characteristic energy scales $\omega^*$ and $\Omega$ marking the upper bou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::210627c3a9b60d7a0d156603a32b9a25
https://doi.org/10.1103/physrevresearch.2.043407
https://doi.org/10.1103/physrevresearch.2.043407
Autor:
Ke Yang, Ning-Hua Tong
For a given quantum impurity model, Wilson's numerical renormalization group (NRG) naturally defines a NRG Hamiltonian whose exact eigenstates and eigenenergies are obtainable. We give exact expressions for the free energy, static, as well as dynamic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::866bd575d760a27ca8be7d02d7c559f0
http://arxiv.org/abs/2006.16488
http://arxiv.org/abs/2006.16488
Publikováno v:
Journal of Nuclear Materials. 511:277-283
We perform a first principles calculation on electronic properties of plutonium mononitride (PuN) using a many-body method merging local density approximation (LDA) with dynamical mean field theory (the so called LDA + DMFT scheme), taking into accou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d15a1986f0c0206bdc72cabf20aaf90b
https://doi.org/10.1016/j.jnucmat.2018.09.023
https://doi.org/10.1016/j.jnucmat.2018.09.023
Publikováno v:
Physical Review B. 97
In the equation of motion approach to the two-time Green's functions, conventional Tyablikov-type truncation of the chain of equations is rather arbitrary and apt to violate the analytical structure of Green's functions. Here, we propose a practical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2fec890854356a97449dceefd7c22b94
https://doi.org/10.1103/physrevb.97.165140
https://doi.org/10.1103/physrevb.97.165140