Zobrazeno 1 - 10
of 48
pro vyhledávání: '"Chapai, Ramakanta"'
Autor:
Chapai, Ramakanta, Peterson, Gordon, Smylie, M. P., Chen, Xinglong, Jiang, J. S., Graf, David, Mitchell, J. F., Welp, Ulrich
Pd$_3$Bi$_2$Se$_2$ is a rare realization of a superconducting metal with a non-zero $Z_2$ topological invariant. We report the growth of high-quality single crystals of layered Pd$_3$Bi$_2$Se$_2$ with a superconducting transition at $T_c$ ~ 0.80 K an
Externí odkaz:
http://arxiv.org/abs/2408.06298
Autor:
Jiang, J. S., Du, Qianheng, Welp, Ulrich, Chapai, Ramakanta, Arava, Hanu, Liu, Yuzi, Li, Yue, Pearson, John, Bhattacharya, Anand, Park, Hyowon
We use co-sputtering to directly synthesize thin films of the A15 phase intermetallic compound Ta3Sb, which has been predicted to have a giant spin Hall conductivity. We identify a large window of Ta:Sb flux ratio that stabilizes single-phase A15 Ta3
Externí odkaz:
http://arxiv.org/abs/2308.03220
Autor:
Chapai, Ramakanta, Reddy, P. V. Sreenivasa, Xing, Lingyi, Graf, David E., Karki, Amar B., Chang, Tay-Rong, Jin, Rongying
Publikováno v:
Scientific Reports 13, 6824 (2023)
PdTe is a superconductor with Tc ~4.25 K. Recently, evidence for bulk-nodal and surface-nodeless gap features has been reported in PdTe [Yang et al., Phys. Rev. Lett. 130, 046402 (2023)]. Here, we investigate the physical properties of PdTe in both t
Externí odkaz:
http://arxiv.org/abs/2304.14453
Autor:
Yang, Xian P., Zhong, Yigui, Mardanya, Sougata, Cochran, Tyler A., Chapai, Ramakanta, Mine, Akifumi, Zhang, Junyi, Sánchez-Barriga, Jaime, Cheng, Zi-Jia, Clark, Oliver J., Yin, Jia- Xin, Blawat, Joanna, Cheng, Guangming, Belopolski, Ilya, Nagashima, Tsubaki, Sahand, Najafzadeh, Gao, Shiyuan, Yao, Nan, Bansil, Arun, Jin, Rongying, Chang, Tay-Rong, Shin, Shik, Okazaki, Kozo, Hasan, M. Zahid
The interplay of nontrivial topology and superconductivity in condensed matter physics gives rise to exotic phenomena. However, materials are extremely rare where it is possible to explore the full details of the superconducting pairing. Here, we inv
Externí odkaz:
http://arxiv.org/abs/2301.01402
Autor:
Chapai, Ramakanta, Leroux, Maxime, Oliviero, Vincent, Vignolles, David, Smylie, M. P., Chung, D. Y., Kanatzidis, M. G., Kwok, W. -K., Mitchell, J. F., Welp, Ulrich
Publikováno v:
Phys. Rev. Lett. 130, 126401 (2023)
The recently discovered layered Kagome metals of composition AV3Sb5 (A = K, Rb, Cs) exhibit a complex interplay among superconductivity, charge density wave order, topologically non-trivial electronic band structure and geometrical frustration. Here,
Externí odkaz:
http://arxiv.org/abs/2208.05523
Publikováno v:
In Solid State Communications 1 August 2024 386
Autor:
Yáng, Xiàn, Cochran, Tyler A., Chapai, Ramakanta, Tristant, Damien, Yin, Jia-Xin, Belopolski, Ilya, Chéng, Zǐjiā, Multer, Daniel, Zhang, Songtian S., Shumiya, Nana, Litskevich, Maksim, Jiang, Yuxiao, Chang, Guoqing, Zhang, Qi, Vekhter, Ilya, Shelton, William A., Jin, Rongying, Xu, Su-Yang, Hasan, M. Zahid
Publikováno v:
Phys Rev B. 101, 201105(R) (2020)
Three types of fermions have been extensively studied in topological quantum materials: Dirac, Weyl, and Majorana fermions. Beyond the fundamental fermions in high energy physics, exotic fermions are allowed in condensed matter systems residing in th
Externí odkaz:
http://arxiv.org/abs/2005.10343
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Autor:
Chapai, Ramakanta, Jia, Yating, Shelton, W. A., Nepal, Roshan, Saghayezhian, Mohammad, DiTusa, J. F., Plummer, E. W., Jin, Changqing, Jin, Rongying
Publikováno v:
Phys. Rev. B 99, 161110(R) (2019)
PdSb2 is a candidate for hosting 6-fold-degenerate exotic fermions (beyond Dirac and Weyl fermions).The nontrivial band crossing protected by the nonsymmorphic symmetry plays a crucial role in physical properties. We have grown high-quality single cr
Externí odkaz:
http://arxiv.org/abs/1904.08014
Autor:
Zhang, Qiang, Diao, Zhenyu, Cao, Huibo, Saleheen, Ahmad, Chapai, Ramakanta, Gong, Dongliang, Stadler, Shane, Jin, R.
Publikováno v:
Phys. Rev. B 99, 184416 (2019)
Layered transition-metal compounds have received great attention owing to their novel physical properties. Here, we present the structural, electronic, thermal, and magnetic properties of BaMn2Sb2 and Ba2Mn3Sb2O2 single crystals, both with the layere
Externí odkaz:
http://arxiv.org/abs/1901.01320