Zobrazeno 1 - 10
of 212
pro vyhledávání: '"Steven Johnston"'
Autor:
Peizhi Mai, Nathan S. Nichols, Seher Karakuzu, Feng Bao, Adrian Del Maestro, Thomas A. Maier, Steven Johnston
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-7 (2023)
Abstract There is growing evidence that the hole-doped single-band Hubbard and t − J models do not have a superconducting ground state reflective of the high-temperature cuprate superconductors but instead have striped spin- and charge-ordered grou
Externí odkaz:
https://doaj.org/article/27eb6abc46a44f29b3cb5b28b36b909f
Publikováno v:
npj Quantum Materials, Vol 8, Iss 1, Pp 1-9 (2023)
Abstract The Holstein model is a paradigmatic description of the electron-phonon interaction, in which electrons couple to local dispersionless phonon modes, independent of momentum. The model has been shown to host a variety of ordered ground states
Externí odkaz:
https://doaj.org/article/b5ff9644461a489d9192139f6fac80ec
Autor:
Steven Johnston
It's a Wonderful Life is an American film classic celebrated for its inspirational character. Famously shown during the holiday season, it brings families together in the spirit of mutual love and support. It tells the story of George Bailey, who tur
Publikováno v:
npj Computational Materials, Vol 9, Iss 1, Pp 1-9 (2023)
Abstract The relationship between electron–phonon (e-ph) interactions and charge-density-wave (CDW) order in the bismuthate family of high-temperature superconductors remains unresolved. We address this question using nonperturbative hybrid Monte C
Externí odkaz:
https://doaj.org/article/848878272a3149df91038d08d2bcbb7e
Autor:
Steven Johnston
The judgment that Abraham Lincoln is the finest president in the history of the United States borders on self-evident. This status tends to disable the very possibility of a more critical understanding or appreciation, one that does not work, explici
Autor:
Seher Karakuzu, Andy Tanjaroon Ly, Peizhi Mai, James Neuhaus, Thomas A. Maier, Steven Johnston
Publikováno v:
Communications Physics, Vol 5, Iss 1, Pp 1-8 (2022)
Experiments indicate that the cuprates exhibit intertwined spin- and charge-stripe orders and have sizable electron-phonon interactions. Here, the authors use quantum Monte Carlo methods to investigate stripe orders in the Hubbard-Holstein model to s
Externí odkaz:
https://doaj.org/article/b835848e5095424497b59451ea9d39f1
Publikováno v:
Communications Physics, Vol 4, Iss 1, Pp 1-12 (2021)
The underlying mechanism of the superconductivity in high-Tc cuprates and the role spin and charge excitations play has been under debate since the cuprates were first discovered. Here, the authors perform a series of calculations for multi- and sing
Externí odkaz:
https://doaj.org/article/fe04550347d04a1db0b50f6ff7c3fc23
Publikováno v:
Carbon Trends, Vol 9, Iss , Pp 100231- (2022)
Numerical approaches to the correlated electron problem have achieved considerable success, yet are still constrained by several bottlenecks, including high order polynomial or exponential scaling in system size, long autocorrelation times, challenge
Externí odkaz:
https://doaj.org/article/b1f5c75979204ff6acbfe4b6afff0cc1
Autor:
Jonathan Pelliciari, Seher Karakuzu, Qi Song, Riccardo Arpaia, Abhishek Nag, Matteo Rossi, Jiemin Li, Tianlun Yu, Xiaoyang Chen, Rui Peng, Mirian García-Fernández, Andrew C. Walters, Qisi Wang, Jun Zhao, Giacomo Ghiringhelli, Donglai Feng, Thomas A. Maier, Ke-Jin Zhou, Steven Johnston, Riccardo Comin
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-8 (2021)
Here, Pelliciari et al. present resonant inelastic X-ray scattering on monolayer samples of unconventional superconductor FeSe, finding evidence for gapped and dispersionless spin excitations. These experiments are very difficult due to the extremely
Externí odkaz:
https://doaj.org/article/9ad3c271bf794319bee4d12a85d1188f
Publikováno v:
npj Quantum Materials, Vol 6, Iss 1, Pp 1-5 (2021)
Abstract The nature of the effective interaction responsible for pairing in the high-temperature superconducting cuprates remains unsettled. This question has been studied extensively using the simplified single-band Hubbard model, which does not exp
Externí odkaz:
https://doaj.org/article/e64d69e2561e4c78ae4034e6aa59ffa6