Zobrazeno 1 - 10
of 97
pro vyhledávání: '"Worm, Paul"'
Autor:
Si, Liang, Jacob, Eric, Wu, Wenfeng, Hausoel, Andreas, Krsnik, Juraj, Worm, Paul, Di Cataldo, Simone, Janson, Oleg, Held, Karsten
Conflicting theoretical scenarios for infinite-layer nickelate superconductors have been hotly debated, particularly regarding whether {only} a single Ni-3$d_{x^2-y^2}$ band is relevant at low energies besides electron pockets or whether multi-orbita
Externí odkaz:
http://arxiv.org/abs/2408.12985
Publikováno v:
Phys. Rev. Letter 133, 166501 (2024)
We present an analytically solvable model for correlated electrons, which is able to capture the major Fermi surface modifications occurring in both hole- and electron-doped cuprates as a function of doping. The proposed Hamiltonian qualitatively rep
Externí odkaz:
http://arxiv.org/abs/2312.17700
Autor:
Worm, Paul, Wang, Qisi, Kitatani, Motoharu, Biało, Izabela, Gao, Qiang, Ren, Xiaolin, Choi, Jaewon, Csontosová, Diana, Zhou, Ke-Jin, Zhou, Xingjiang, Zhu, Zhihai, Si, Liang, Chang, Johan, Tomczak, Jan M., Held, Karsten
Infinite-layer nickelates show high-temperature superconductivity, and the experimental phase diagram agrees well with the one simulated within the dynamical vertex approximation (D$\Gamma$A). Here, we compare the spin-fluctuation spectrum behind the
Externí odkaz:
http://arxiv.org/abs/2312.08260
Publikováno v:
Nature Communications 5, 3952 (2024)
High-temperature unconventional superconductivity quite generically emerges from doping a strongly correlated parent compound, often (close to) an antiferromagnetic insulator. The recently developed dynamical vertex approximation is a state-of-the-ar
Externí odkaz:
http://arxiv.org/abs/2311.06195
Oxygen vacancies in the perovskite insulator SrTiO$_3$ free electrons that couple with other physical degrees of freedom such as lattice, orbital, and spin. This leads to the emergence of exotic quantum states such as superconductivity and unusual fe
Externí odkaz:
http://arxiv.org/abs/2306.07120
A recent experiment [X. Ding et al., Nature 615, 50 (2023)] indicates that superconductivity in nickelates is restricted to a narrow window of hydrogen concentration: 0.22 < x < 0.28 in Nd$_{0.8}$Sr$_{0.2}$NiO$_{2}$H$_{x}$. This reported necessity of
Externí odkaz:
http://arxiv.org/abs/2304.03599
Despite enormous experimental and theoretical efforts, obtaining generally accepted conclusions regarding the intrinsic magnetic and electronic properties of superconducting nickelates remains exceptionally challenging. Experiments show a significant
Externí odkaz:
http://arxiv.org/abs/2208.11085
Publikováno v:
Phys. Rev. Lett. 130, 166002 (2023)
Motivated by cuprate and nickelate superconductors, we perform a comprehensive study of the superconducting instability in the single-band Hubbard model. We calculate the spectrum and superconducting transition temperature $T_{\rm c}$ as a function o
Externí odkaz:
http://arxiv.org/abs/2207.14038
The vanguard of many-body theory is nowadays dealing with the full frequency dynamics of n-point Green's functions for n higher than two. Numerically, these objects easily become a memory bottleneck, even when working with discrete imaginary-time Mat
Externí odkaz:
http://arxiv.org/abs/2207.01681
Publikováno v:
Crystals 12.5 (2022): 656
Superconductivity has entered the nickel age marked by enormous experimental and theoretical efforts. Notwithstanding, synthesizing nickelate superconductors remains extremely challenging, not least due to incomplete oxygen reduction and topotactic h
Externí odkaz:
http://arxiv.org/abs/2204.10657