Zobrazeno 1 - 10
of 166
pro vyhledávání: '"Bang, Yunkyu"'
We examine various possibilities for the pairing mechanisms in the recently discovered bilayer-nickelate superconductor within the Bardeen-Cooper-Schrieffer framework. Unlike earlier studies, where only a pure $d$-wave or sign-changing $s$-wave super
Externí odkaz:
http://arxiv.org/abs/2409.09321
Autor:
Singh, Dheeraj Kumar, Bang, Yunkyu
We examine charge correlations and instabilities in the pseudogap phase of high-$T_c$ cuprates modeled by $d$-density wave ordering. The latter has a gap symmetry similar to the one observed in the $d$-wave superconductor. We use $t$-$J$ model to des
Externí odkaz:
http://arxiv.org/abs/2310.09816
Autor:
Yao, Shichang, Wang, Chongze, Jeon, Hyunsoo, Liu, Liangliang, Bok, Jin Mo, Bang, Yunkyu, Jia, Yu, Cho, Jun-Hyung
Recently, the thorium hydride ThH9 possessing an H-rich clathrate structure has been experimentally synthesized to exhibit a superconducting transition temperature Tc of 146 K at 170-175 GPa, while the more H-rich clathrate thorium hydride ThH18 was
Externí odkaz:
http://arxiv.org/abs/2302.06956
Publikováno v:
Phys. ReV. B 105, 054501 (2022)
We show conclusively that a pseudogap state can arise at $T > T_c$, for reasonable pairing interaction strength, from order parameter fluctuations in a two dimensional minimal model of $d$-wave superconductivity. The occurrence of the pseudogap requi
Externí odkaz:
http://arxiv.org/abs/2112.10965
Recently, an alkaline earth hydride CaH$_6$ having a sodalitelike clathrate structure has been experimentally synthesized at megabar pressures with a maximum $T_c$ of 215 K, comparable to that of a rare earth hydride LaH$_{10}$. Here, based on first-
Externí odkaz:
http://arxiv.org/abs/2111.10797
Autor:
Oh, Dongjin, Song, Dongjoon, Kim, Younsik, Miyasaka, Shigeki, Tajima, Setsuko, Bang, Yunkyu, Park, Seung Ryong, Kim, Changyoung
We performed temperature- and doping-dependent high-resolution Raman spectroscopy experiments on YBa$_2$Cu$_3$O$_{7-\delta}$ to study $B$$_{\rm 1g}$ phonons. The temperature dependence of the real part of the phonon self-energy shows a distinct kink
Externí odkaz:
http://arxiv.org/abs/2107.00891
Publikováno v:
Phys. Rev. B 104, 020504 (2021)
The experimental realization of high-temperature superconductivity in compressed hydrides H$_3$S and LaH$_{10}$ at high pressures over 150 GPa has aroused great interest in reducing the stabilization pressure of superconducting hydrides. For cerium h
Externí odkaz:
http://arxiv.org/abs/2101.03481
Autor:
Singh, Dheeraj Kumar, Bang, Yunkyu
Publikováno v:
Phys. Rev. B 103, 035122 (2021)
We investigate the magnetic excitations in view of the recent reports suggesting that the spin-wave energy may exhibit a significant dependence on the in-plane strain of a thin film of La$_2$CuO$_4$. The nature of dependence, as we find, can be expla
Externí odkaz:
http://arxiv.org/abs/2012.01999
We discuss the Abelian and non-Abelian monopoles which could exist in condensed matters. We show how the Dirac monopole can be regularized by the charge screening, and argue that the Dirac monopole of mass of hundred meVs could exist in dielectric co
Externí odkaz:
http://arxiv.org/abs/2010.08108
Autor:
Yin, Jia-Xin, Zhang, Songtian S., Dai, Guangyang, Zhao, Yuanyuan, Kreisel, Andreas, Macam, Gennevieve, Wu, Xianxin, Miao, Hu, Huang, Zhi-Quan, Martiny, Johannes H. J., Andersen, Brian M., Shumiya, Nana, Multer, Daniel, Litskevich, Maksim, Cheng, Zijia, Yang, Xian, Cochran, Tyler A., Chang, Guoqing, Belopolski, Ilya, Xing, Lingyi, Wang, Xiancheng, Gao, Yi, Chuang, Feng-Chuan, Lin, Hsin, Wang, Ziqiang, Jin, Changqing, Bang, Yunkyu, Hasan, M. Zahid
Publikováno v:
Phys. Rev. Lett. 123, 217004 (2019)
The interplay between unconventional Cooper pairing and quantum states associated with atomic scale defects is a frontier of research with many open questions. So far, only a few of the high-temperature superconductors allow this intricate physics to
Externí odkaz:
http://arxiv.org/abs/1910.11396