Search Results - "Costel R. Rotundu"

Spin-polarized surface resonances accompanying topological surface state formation by Jozwiak, Chris, Sobota, Jonathan A., Gotlieb, Kenneth, Kemper, Alexander F., Rotundu, Costel R., Birgeneau, Robert J., Hussain, Zahid, Lee, Dung-Hai, Shen, Zhi-Xun, Lanzara, Alessandra

“…Topological insulators host spin-polarized surface states born out of the energetic inversion of bulk bands driven by the spin-orbit interaction. Here we…”
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Photoelectron spin-flipping and texture manipulation in a topological insulator by Jozwiak, Chris, Park, Cheol-Hwan, Gotlieb, Kenneth, Hwang, Choongyu, Lee, Dung-Hai, Louie, Steven G., Denlinger, Jonathan D., Rotundu, Costel R., Birgeneau, Robert J., Hussain, Zahid, Lanzara, Alessandra

“…In a topological insulator, the surface-state electron spins are ‘locked’ to their direction of travel. But when an electron is kicked out by a photon through…”
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Fermi surface reconstruction in electron-doped cuprates without antiferromagnetic long-range order by He, Junfeng, Rotundu, Costel R., Scheurer, Mathias S., He, Yu, Hashimoto, Makoto, Xu, Ke-Jun, Wang, Yao, Huang, Edwin W., Jia, Tao, Chen, Sudi, Moritz, Brian, Lu, Donghui, Lee, Young S., Devereaux, Thomas P., Shen, Zhi-xun

“…Fermi surface (FS) topology is a fundamental property of metals and superconductors. In electron-doped cuprate Nd2−x CeₓCuO₄ (NCCO), an unexpected FS…”
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Anomalous normal-state gap in an electron-doped cuprate by 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

“…In the underdoped n-type cuprate Nd Ce CuO , long-range antiferromagnetic order reconstructs the Fermi surface, resulting in a putative antiferromagnetic metal…”
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Bogoliubov quasiparticle on the gossamer Fermi surface in electron-doped cuprates by 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

“…Electron-doped cuprates consistently exhibit strong antiferromagnetic correlations, leading to the prevalent belief that antiferromagnetic spin fluctuations…”
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Specific Heat of the $S=1/2$ Two-Dimensional Shastry--Sutherland Antiferromagnet SrCu2(BO3)2 in High Magnetic Fields by Tsujii, Hiroyuki, Rotundu, Costel R, Andraka, Bohdan, Takano, Yasumasa, Kageyama, Hiroshi, Ueda, Yutaka

“…We characterize the field-induced magnetic phases of SrCu 2 (BO 3 ) 2 , a frustrated spin-1/2 Heisenberg antiferromagnet in the two-dimensional…”
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Physical properties and electronic structure of a new barium titanate suboxide Ba1+δTi13−δO12 (δ = 0.11) by Rotundu, Costel R., Jiang, Shan, Deng, Xiaoyu, Qian, Yiting, Khan, Saeed, Hawthorn, David G., Kotliar, Gabriel, Ni, Ni

“…The structure, transport, thermodynamic properties, x-ray absorption spectra (XAS), and electronic structure of a new barium titanate suboxide, Ba1+δTi13-δO₁₂…”
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X-ray Absorption and Emission Spectroscopy Study of the Effect of Doping on the Low Energy Electronic Structure of PrFeAsO1-\delta by Freelon, Byron, Liu, Yi-sheng, Rotundu, Costel R, Wilson, Stephen D, Guo, Jinghua, Chen, Jeng-Lung, Yang, Wanli, Chang, Chunli, Glans, Per Anders, Shirage, Parasharam, Iyo, Akira, Birgeneau, Robert J

“…We report electronic density of states measurements of oxygen vacated PrFeAsO using soft X-ray absorption and emission spectroscopy. The electronic density of…”
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Anomalous normal state gap in an electron-doped cuprate by 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

“…Science 385, 796-800 (2024) In the underdoped n-type cuprate Nd2-xCexCuO4, long-ranged antiferromagnetic order reconstructs the Fermi surface, resulting in a…”
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Specific heat of U1−xYxRu2Si2; 0⩽x⩽0.5: search for a hidden order by Rotundu, Costel R, Mixson, Daniel, Stewart, Greg R, Andraka, Bohdan

“…Specific heat for U1−xYxRu2Si2 alloys, with 0⩽x⩽0.5, is reported. All studied alloys showed an anomaly at a temperature Tm. Tm is rapidly reduced with x for…”
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Specific heat of PrOs4Sb12 in magnetic fields by Tsujii, Hiroyuki, Rotundu, Costel R, Takano, Yasumasa, Andraka, Bohdan, Aoki, Yuji, Sugawara, Hitoshi, Sato, Hideyuki

“…Magnetic field-temperature phase diagram of PrOs4Sb12 was studied by specific heat measurements. Above 13 T we observe a new anomaly that we associate with a…”
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Anomalous normal-state gap in an electron-doped cuprate by 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

“…In the underdoped n-type cuprate Nd 2- x Ce x CuO 4 , long-range antiferromagnetic order reconstructs the Fermi surface, resulting in a putative…”
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Ultrafast Measurements of Mode-Specific Deformation Potentials of Bi 2 Te 3 and Bi 2 Se 3 by 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, Savić, 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…”
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Specific Heat of Ba0.59K0.41Fe2As2, an Fe-Pnictide Superconductor with Tc = 36.9 K, and a New Method for Identifying the Electron Contribution [Specific Heat of Ba0.59K0.41Fe2As2, and a New Method for Identifying the Electron Contribution: Two Electron Bands with Different Energy Gaps in the Superconducting State] by Rotundu, Costel R., Forrest, Thomas R., Phillips, Norman E., Birgeneau, Robert J.

“…Here, we report specific-heat measurements on Ba0.59K0.41Fe2As2, one of a family of high-TcFe-pnictide superconductors for which the pairing interaction is of…”
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Specific Heat of Ba 0.59 K 0.41 Fe 2 As 2 , an Fe-Pnictide Superconductor with T c = 36.9 K, and a New Method for Identifying the Electron Contribution by Rotundu, Costel R., Forrest, Thomas R., Phillips, Norman E., Birgeneau, Robert J.

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Specific Heat of Ba sub( 0.59)K sub( 0.41)Fe sub( 2)As sub( 2), an Fe-Pnictide Superconductor with T sub( c) = 36.9 K, and a New Method for Identifying the Electron Contribution by Rotundu, Costel R, rest, Thomas R, Phillips, Norman E, Birgeneau, Robert J

“…We report specific-heat measurements on ..., one of a family of high-Tc Fe-pnictide superconductors for which the pairing interaction is of special interest…”
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Specific Heat of Ba^sub 0.59^K^sub 0.41^Fe^sub 2^As^sub 2^, an Fe-Pnictide Superconductor with T^sub c^ = 36.9 K, and a New Method for Identifying the Electron Contribution by Rotundu, Costel R, rest, Thomas R, Phillips, Norman E, Birgeneau, Robert J

“…We report specific-heat measurements on ..., one of a family of high-Tc Fe-pnictide superconductors for which the pairing interaction is of special interest…”
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Ultrafast Measurements of Mode-Specific Deformation Potentials of Bi_{2}Te_{3} and Bi_{2}Se_{3} by Yijing Huang, José D. Querales-Flores, Samuel W. Teitelbaum, Jiang Cao, Thomas Henighan, Hanzhe Liu, Mason Jiang, Gilberto De la Peña, Viktor Krapivin, Johann Haber, Takahiro Sato, Matthieu Chollet, Diling Zhu, Tetsuo Katayama, Robert Power, Meabh Allen, Costel R. Rotundu, Trevor P. Bailey, Ctirad Uher, Mariano Trigo, Patrick S. Kirchmann, Éamonn D. Murray, Zhi-Xun Shen, Ivana Savić, Stephen Fahy, Jonathan A. Sobota, David A. Reis

“…Quantifying electron-phonon interactions for the surface states of topological materials can provide key insights into surface-state transport, topological…”
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Bogoliubov quasiparticle on the gossamer Fermi surface in electron-doped cuprates by 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

“…Electron-doped cuprates consistently exhibit strong antiferromagnetic correlations, leading to the prevalent belief that antiferromagnetic spin fluctuations…”
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Specific Heat of the S =1/2 Two-Dimensional Shastry–Sutherland Antiferromagnet SrCu 2 (BO 3 ) 2 in High Magnetic Fields by Tsujii, Hiroyuki, R. Rotundu, Costel, Andraka, Bohdan, Takano, Yasumasa, Kageyama, Hiroshi, Ueda, Yutaka

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