Zobrazeno 1 - 10
of 55
pro vyhledávání: '"Rotundu, Costel R"'
Autor:
Guo, Qinda, Xu, Ke-Jun, Berntsen, Magnus H., Grubišić-Čabo, Antonija, Dendzik, Maciej, Balasubramanian, Thiagarajan, Polley, Craig, Chen, Su-Di, He, Junfeng, He, Yu, Rotundu, Costel R., Lee, Young S., Hashimoto, Makoto, Lu, Dong-Hui, Devereaux, Thomas P., Lee, Dung-Hai, Shen, Zhi-Xun, Tjernberg, Oscar
Spin- and charge-lattice interactions are potential key factors in the microscopic mechanism of high-temperature superconductivity in cuprates. Although both interactions can dramatically shape the low-energy electronic structure, their phenomenologi
Externí odkaz:
http://arxiv.org/abs/2408.01685
Autor:
Gauthier, Alexandre, Sobota, Jonathan A., Gauthier, Nicolas, Rotundu, Costel R., Shen, Zhi-Xun, Kirchmann, Patrick S.
Publikováno v:
Phys. Rev. Materials 8, 054201 (2024)
Bi$_2$Se$_3$ has been the focus of intense interest over the past decade due to its topological properties. Bi surfaces are known to form on Bi$_2$Se$_3$ upon exposure to atmosphere, but their electronic structure has not been investigated. We report
Externí odkaz:
http://arxiv.org/abs/2404.17203
Autor:
Xu, Ke-Jun, He, Junfeng, Chen, Su-Di, He, Yu, Abadi, Sebastien N., Rotundu, Costel. R., Lee, Young S., Lu, Dong-Hui, Guo, Qinda, Tjernberg, Oscar, Devereaux, Thomas P., Lee, Dung-Hai, Hashimoto, Makoto, Shen, Zhi-Xun
Publikováno v:
Science 385, 796-800 (2024)
In the underdoped n-type cuprate Nd2-xCexCuO4, long-ranged antiferromagnetic order reconstructs the Fermi surface, resulting in a putative antiferromagnetic metal with small pockets. Using angle-resolved photoemission spectroscopy, we observe an anom
Externí odkaz:
http://arxiv.org/abs/2309.10208
Autor:
Xu, Ke-Jun, Guo, Qinda, Hashimoto, Makoto, Li, Zi-Xiang, Chen, Su-Di, He, Junfeng, He, Yu, Li, Cong, Berntsen, Magnus H., Rotundu, Costel R., Lee, Young S., Devereaux, Thomas P., Rydh, Andreas, Lu, Dong-Hui, Lee, Dung-Hai, Tjernberg, Oscar, Shen, Zhi-Xun
In contrast to hole-doped cuprates, electron-doped cuprates consistently exhibit strong antiferromagnetic correlations with a commensurate ({\pi}, {\pi}) ordering wave vector, leading to the prevalent belief that antiferromagnetic spin fluctuations m
Externí odkaz:
http://arxiv.org/abs/2308.05313
Autor:
Huang, Yijing, Querales-Flores, José D., Teitelbaum, Samuel W., Cao, Jiang, Henighan, Thomas, Liu, Hanzhe, Jiang, Mason, De la Peña, Gilberto, Krapivin, Viktor, Haber, Johann, Sato, Takahiro, Chollet, Matthieu, Zhu, Diling, Katayama, Tetsuo, Power, Robert, Allen, Meabh, Rotundu, Costel R., Bailey, Trevor P., Uher, Ctirad, Trigo, Mariano, Kirchmann, Patrick S., Murray, Éamonn D., Shen, Zhi-Xun, Savic, Ivana, Fahy, Stephen, Sobota, Jonathan A., Reis, David A.
Quantifying electron-phonon interactions for the surface states of topological materials can provide key insights into surface-state transport, topological superconductivity, and potentially how to manipulate the surface state using a structural degr
Externí odkaz:
http://arxiv.org/abs/2307.12132
Autor:
Sobota, Jonathan A., Teitelbaum, Samuel W., Huang, Yijing, Querales-Flores, José D., Power, Robert, Allen, Meabh, Rotundu, Costel R., Bailey, Trevor P., Uher, Ctirad, Henighan, Tom, Jiang, Mason, Zhu, Diling, Chollet, Matthieu, Sato, Takahiro, Trigo, Mariano, Murray, Éamonn D., Savić, Ivana, Kirchmann, Patrick S., Fahy, Stephen, Reis, David. A., Shen, Zhi-Xun
We investigate coupled electron-lattice dynamics in the topological insulator Bi2Te3 with time-resolved photoemission and time-resolved x-ray diffraction. It is well established that coherent phonons can be launched by optical excitation, but selecti
Externí odkaz:
http://arxiv.org/abs/2212.09892
Autor:
Baykusheva, Denitsa, Chacón, Alexis, Lu, Jian, Bailey, Trevor P., Sobota, Jonathan A., Soifer, Hadas, Kirchmann, Patrick S., Rotundu, Costel R., Uher, Ctirad, Heinz, Tony F., Reis, David A., Ghimire, Shambhu
Publikováno v:
Nano Lett. 2021, 21, 21, 8970-8978
We report the observation of a novel nonlinear optical response from the prototypical three-dimensional topological insulator Bi$_2$Se$_3$ through the process of high-order harmonic generation. We find that the generation efficiency increases as the
Externí odkaz:
http://arxiv.org/abs/2109.15291
Akademický článek
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Autor:
Soifer, Hadas, Gauthier, Alexandre, Kemper, Alexander F., Rotundu, Costel R., Yang, Shuolong, Xiong, Hongyu, Lu, Donghui, Hashimoto, Makoto, Kirchmann, Patrick S., Sobota, Jonathan A., Shen, Zhi-Xun
Publikováno v:
Phys. Rev. Lett. 122, 167401 (2019)
We study the microscopic origins of photocurrent generation in the topological insulator Bi$_2$Se$_3$ via time- and angle-resolved photoemission spectroscopy. We image the unoccupied band structure as it evolves following a circularly polarized optic
Externí odkaz:
http://arxiv.org/abs/1712.08694
Publikováno v:
Phys. Rev. B 97, 054415 (2018)
The application of pressure can induce transitions between unconventional quantum phases in correlated materials. The inorganic compound TiOCl, composed of chains of S=1/2 Ti ions, is an ideal realization of a spin-Peierls system with a relatively si
Externí odkaz:
http://arxiv.org/abs/1710.02632