Zobrazeno 1 - 10
of 59
pro vyhledávání: '"He, Rong-Qiang"'
Low-energy excitations may manifest intricate behaviors of correlated electron systems and provide essential insights into the dynamics of quantum states and phase transitions. We study a two-orbital Hubbard model featuring the so-called holon-doublo
Externí odkaz:
http://arxiv.org/abs/2407.15242
High-$T_c$ superconductivity (SC) was recently found in the bilayer material La$_3$Ni$_2$O$_7$ (La327) under high pressures. We study the bilayer two-orbital Hubbard model derived from the band structure of the La327. The model is solved by cluster d
Externí odkaz:
http://arxiv.org/abs/2407.13737
By preforming DFT+DMFT calculations, we systematically investigate the correlated electronic structure in the newly discovered monolayer-trilayer (ML-TL) phase of La$_3$Ni$_2$O$_7$ (1313-La327). Our calculated Fermi surfaces are in good agreement wit
Externí odkaz:
http://arxiv.org/abs/2407.08601
Publikováno v:
Phys. Rev. B 109, 235133 (2024)
The tensor network algorithm, a family of prevalent numerical methods for quantum many-body problems, aptly captures the entanglement properties intrinsic to quantum systems, enabling precise representation of quantum states. However, its computation
Externí odkaz:
http://arxiv.org/abs/2406.12207
Publikováno v:
Phys. Rev. B 109, 165140 (2024)
High temperature superconductivity was recently found in the bilayer nickelate $\rm{La}_3 \rm{Ni}_2 \rm{O}_7$ (La327), followed by the discovery of superconductivity in the trilayer $\rm{La}_4 \rm{Ni}_3 \rm{O}_{10}$ (La4310), under high pressure. Thr
Externí odkaz:
http://arxiv.org/abs/2402.02581
Publikováno v:
Phys. Rev. B 109, 115114 (2024)
By means of density functional theory plus dynamical mean-field theory (DFT+DMFT), we investigate the correlated electronic structures of La$_3$Ni$_2$O$_7$ under high pressure. Our calculations show that La$_3$Ni$_2$O$_7$ is a multi-orbital Hund meta
Externí odkaz:
http://arxiv.org/abs/2311.10066
Publikováno v:
Phys. Rev. B 109, 165154 (2024)
Possible high-$T_c$ superconductivity (SC) has been found experimentally in the bilayer material La$_3$Ni$_2$O$_7$ under high pressure recently, in which the Ni-$3d_{3z^2-r^2}$ and $3d_{x^2-y^2}$ orbitals are expected to play a key role in the electr
Externí odkaz:
http://arxiv.org/abs/2308.09698
Publikováno v:
Phys. Rev. B 109, 245120 (2024)
Neural-network quantum states (NQSs), variationally optimized by combining traditional methods and deep learning techniques, is a new way to find quantum many-body ground states and gradually becomes a competitor of traditional variational methods. H
Externí odkaz:
http://arxiv.org/abs/2308.09664
Using the natural orbitals renormalization group, we studied the problem of a localized spin- 1/2 impurity coupled to two helical liquids via the Kondo interaction in a quantum spin Hall insulator, based on the Kane-Mele model defined in a finite zig
Externí odkaz:
http://arxiv.org/abs/2303.14331
The natural orbitals renormalization group (NORG) has previously been proposed as an efficient numerical method for solving zero-temperature properties of multisite and multiorbital quantum impurity systems. Here, we implement the NORG as an impurity
Externí odkaz:
http://arxiv.org/abs/2209.14178