Zobrazeno 1 - 10
of 145
pro vyhledávání: '"Abhishek, Nag"'
Impact of electron correlations on two-particle charge response in electron- and hole-doped cuprates
Autor:
Abhishek Nag, Luciano Zinni, Jaewon Choi, J. Li, Sijia Tu, A. C. Walters, S. Agrestini, S. M. Hayden, Matías Bejas, Zefeng Lin, H. Yamase, Kui Jin, M. García-Fernández, J. Fink, Andrés Greco, Ke-Jin Zhou
Publikováno v:
Physical Review Research, Vol 6, Iss 4, p 043184 (2024)
Estimating many-body effects that deviate from an independent particle approach has long been a key research interest in condensed matter physics. Layered cuprates are prototypical systems, where electron-electron interactions are found to strongly a
Externí odkaz:
https://doaj.org/article/ca1d33a230cf4f17b9a908f4f759257e
Autor:
Riccardo Arpaia, Leonardo Martinelli, Marco Moretti Sala, Sergio Caprara, Abhishek Nag, Nicholas B. Brookes, Pietro Camisa, Qizhi Li, Qiang Gao, Xingjiang Zhou, Mirian Garcia-Fernandez, Ke-Jin Zhou, Enrico Schierle, Thilo Bauch, Ying Ying Peng, Carlo Di Castro, Marco Grilli, Floriana Lombardi, Lucio Braicovich, Giacomo Ghiringhelli
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-11 (2023)
Abstract The universality of the strange metal phase in many quantum materials is often attributed to the presence of a quantum critical point (QCP), a zero-temperature phase transition ruled by quantum fluctuations. In cuprates, where superconductiv
Externí odkaz:
https://doaj.org/article/b529067d9ae9420ebdc5b56ced2c414e
Autor:
Hiroki Ueda, Roman Mankowsky, Eugenio Paris, Mathias Sander, Yunpei Deng, Biaolong Liu, Ludmila Leroy, Abhishek Nag, Elizabeth Skoropata, Chennan Wang, Victor Ukleev, Gérard Sylvester Perren, Janine Dössegger, Sabina Gurung, Cristian Svetina, Elsa Abreu, Matteo Savoini, Tsuyoshi Kimura, Luc Patthey, Elia Razzoli, Henrik Till Lemke, Steven Lee Johnson, Urs Staub
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-7 (2023)
Abstract Quantifying the dynamics of normal modes and how they interact with other excitations is of central importance in condensed matter. Spin-lattice coupling is relevant to several sub-fields of condensed matter physics; examples include spintro
Externí odkaz:
https://doaj.org/article/1ef7e42921474fca96b41cd6719f029f
Publikováno v:
Songklanakarin Journal of Science and Technology (SJST), Vol 45, Iss 4, Pp 464-469 (2023)
Most of the system-level designs contain sequential circuits. Power optimization of these circuits at many levels is required to build a portable device with a long battery life. A dynamic clock gating technique was used in this work to reduce the
Externí odkaz:
https://doaj.org/article/ef21ad32567540c7a4e1358342b95314
Autor:
Hebatalla Elnaggar, Abhishek Nag, Maurits W. Haverkort, Mirian Garcia-Fernandez, Andrew Walters, Ru-Pan Wang, Ke-Jin Zhou, Frank de Groot
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-8 (2023)
Abstract A photon carrying one unit of angular momentum can change the spin angular momentum of a magnetic system with one unit (ΔMs = ±1) at most. This implies that a two-photon scattering process can manipulate the spin angular momentum of the ma
Externí odkaz:
https://doaj.org/article/7867fc874f374be48bd1d141ff0a1418
Autor:
Abhishek Nag, Yiran Peng, Jiemin Li, S. Agrestini, H. C. Robarts, Mirian García-Fernández, A. C. Walters, Qi Wang, Qiangwei Yin, Hechang Lei, Zhiping Yin, Ke-Jin Zhou
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-7 (2022)
In flat band materials, the ’flat’ dispersion of the electronic states mean that interactions between electrons can be strong, potentially leading to a variety of interesting magnetic and transport properties. Here, Nag et al study the Kagomé se
Externí odkaz:
https://doaj.org/article/18b2d812542f432c9046457ed34a0008
Autor:
Lichen Wang, Guanhong He, Zichen Yang, Mirian Garcia-Fernandez, Abhishek Nag, Kejin Zhou, Matteo Minola, Matthieu Le Tacon, Bernhard Keimer, Yingying Peng, Yuan Li
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-8 (2022)
Abstract Cuprate superconductors have the highest critical temperatures (T c) at ambient pressure, yet a consensus on the superconducting mechanism remains to be established. Finding an empirical parameter that limits the highest reachable T c can pr
Externí odkaz:
https://doaj.org/article/dc047100193847f7a7d008639ca47a62
Autor:
Ke-Jin Zhou, Andrew Walters, Mirian Garcia-Fernandez, Thomas Rice, Matthew Hand, Abhishek Nag, Jiemin Li, Stefano Agrestini, Peter Garland, Hongchang Wang, Simon Alcock, Ioana Nistea, Brian Nutter, Nicholas Rubies, Giles Knap, Martin Gaughran, Fajin Yuan, Peter Chang, John Emmins, George Howell
Publikováno v:
Journal of Synchrotron Radiation, Vol 29, Iss 2, Pp 563-580 (2022)
The I21 beamline at Diamond Light Source is dedicated to advanced resonant inelastic X-ray scattering (RIXS) for probing charge, orbital, spin and lattice excitations in materials across condensed matter physics, applied sciences and chemistry. Both
Externí odkaz:
https://doaj.org/article/133a5c96417d4b298d46fc19165f013d
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
Autor:
Robert A. House, John-Joseph Marie, Joohyuk Park, Gregory J. Rees, Stefano Agrestini, Abhishek Nag, Mirian Garcia-Fernandez, Ke-Jin Zhou, Peter G. Bruce
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-7 (2021)
In this work, authors show that O-redox in 4d and 5d transition metal oxides involves the formation of molecular oxygen trapped in the particles. These results are in accord with observations in 3d oxides and show that the greater covalency of the 4d
Externí odkaz:
https://doaj.org/article/e61d8756b723447082d259cb86fac7b4