Výsledky vyhledávání - "Singh, Akhilesh Kr."

Report

Origin of nonlinear photocurrents in chiral multifold semimetal CoSi unveiled by terahertz emission spectroscopy

Autor: Chan, Yao-Jui, Faizanuddin, Syed Mohammed, Kalaivanan, Raju, Raman, Sankar, Lin, Hsin, Kar, Uddipta, Singh, Akhilesh Kr., Lee, Wei-Li, Vankayala, Ranganayakulu K., Ou, Min-Nan, Wen, Yu-Chieh

Spectroscopic identification of distinct nonlinear photocurrents unveils quantum geometric properties of electron wavefunctions and the momentum-space topological structures. This is especially interesting, but still puzzling, for chiral topological

Externí odkaz: http://arxiv.org/abs/2409.05424

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Nonlinear and nonreciprocal transport effects in untwinned thin films of ferromagnetic Weyl metal SrRuO$_3$

Autor: Kar, Uddipta, Lu, Elisha Cho-Hao, Singh, Akhilesh Kr., Reddy, P. V. Sreenivasa, Han, Youngjoon, Li, Xinwei, Cheng, Cheng-Tung, Yang, Song, Lin, Chun-Yen, Cheng, I-Chun, Hsu, Chia-Hung, Hsieh, D., Lee, Wei-Cheng, Guo, Guang-Yu, Lee, Wei-Li

Publikováno v: Phys. Rev. X 14, 011022 (2024)

The identification of distinct charge transport features, deriving from nontrivial bulk band and surface states, has been a challenging subject in the field of topological systems. In topological Dirac and Weyl semimetals, nontrivial conical bands wi

Externí odkaz: http://arxiv.org/abs/2307.04482

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The thickness dependence of quantum oscillations in ferromagnetic Weyl metal SrRuO$_{3}$

Autor: Kar, Uddipta, Singh, Akhilesh Kr., Hsu, Yu-Te, Lin, Chih-Yu, Das, Bipul, Cheng, Cheng-Tung, Berben, M., Yang, Song, Lin, Chun-Yen, Hsu, Chia-Hung, Wiedmann, S., Lee, Wei-Cheng, Lee, Wei-Li

Publikováno v: npj Quantum Mater. 8, 8 (2023)

Quantum oscillations in resistivity and magnetization at high magnetic fields are a macroscopic fingerprint of the energy quantization due to the cyclotron motion of quasiparticles. In a thin Weyl semimetal, a unique thickness dependent Weyl-orbit qu

Externí odkaz: http://arxiv.org/abs/2112.13331

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High-sensitivity of initial SrO growth on the residual resistivity in epitaxial thin films of SrRuO$_3$ on SrTiO$_3$ (001)

Autor: Kar, Uddipta, Singh, Akhilesh Kr., Yang, Song, Lin, Chun-Yen, Das, Bipul, Hsu, Chia-Hung, Lee, Wei-Li

Publikováno v: Sci. Rep. 11, 16070 (2021)

The growth of SrRuO$_3$ (SRO) thin film with high-crystallinity and low residual resistivity (RR) is essential to explore its intrinsic properties. Here, utilizing the adsorption-controlled growth technique, the growth condition of initial SrO layer

Externí odkaz: http://arxiv.org/abs/2105.02404

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Perpendicular standing spin wave and magnetic anisotropic study on amorphous FeTaC films

Autor: Samantaray, B., Singh, Akhilesh Kr., Perumal, A., Mandal, P.

Magnetic anisotropy, spin wave (SW) excitation and exchange stiffness constant of amorphous FeTaC ($d$ = 20-200 nm) films were studied as a function of thickness using micro-strip ferromagnetic resonance (MS-FMR) technique. The MS-FMR spectra for in-

Externí odkaz: http://arxiv.org/abs/1511.01722

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