Identify the Nematic Superconductivity of Topological Superconductor Pd$$_x$$Bi$$_2$$Te$$_3$$ by Angle-dependent Upper Critical Field Measurement

Wang, Xianyu; Jiao, Fei; Tian, Qingyin; Zhu, Shu; Dong, Xiangqing; Sun, Jian-Ping; Cai, Lingbo; Hu, Jiajun; Xu, Chuangye; Lü, Qing; Tan, Shugang; Wang, Cao; Jing, Qiang; Liu, Bo; Qian, Dong

doi:10.1007/s10948-021-06055-x

Cited by 4 publications

(3 citation statements)

References 43 publications

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“…These results are similar to other superconducting topological material e.g. Pd doped Bi 2 Te 3 [10,[37][38][39]. Pd doped Bi 2 Te 3 also shows low superconducting volume fraction and nonoccurrence of zero resistivity, yet its superconductivity is not attributed to any superconducting impurities present in the sample [10].…”

Section: Resultssupporting

confidence: 86%

Sn₂Pd: a possible superconducting material with topological surface states

Sharma¹,

Awana²

2022

J. Phys. D: Appl. Phys.

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In this article, we report the detailed magneto transport measurements of topological semimetal candidate, Sn2Pd. Single crystal of Sn2Pd is synthesized through self-flux method. Phase purity and crystalline morphology are confirmed through powder x-ray diffraction pattern and field emission scanning electron microscopy image. Signatures of superconducting transition are seen in both transport and magneto transport measurements, which are further supported by the AC magnetization studies. Sn2Pd is found to show superconductivity onset at below 2.8 K, but not the zero resistivity down to 2 K. Although, isothermal magneto resistivity measurements below superconducting onset (2.8 K) clearly exhibited superconductor like behavior, but is not observed in heat capacity measurements, indicating the same to be of weak nature. Magneto transport measurements performed in normal state of Sn2Pd show the presence of weak antilocalization effect, which is confirmed by modelling of low field magneto-conductivity through Hikami Larkin Nagaoka formalism. Here, it is worth mentioning that the present article is the first report on magneto transport measurements of Sn2Pd, which show the same to be a topological material with weak superconducting phase below around 2.8 K.

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Section: Resultssupporting

confidence: 86%

Sn₂Pd: a possible superconducting material with topological surface states

Sharma¹,

Awana²

2022

J. Phys. D: Appl. Phys.

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“…Moreover, considering that metastable PdBi 2 Te 3 , 52 meV, and 3 meV higher than PdBi 2 Te 5 and PdBi 2 Te 4 as shown in Fig. 3b, has been synthesized in experiments 68,69 , we thus conclude that PdBi 2 Te 5 and PdBi 2 Te 4 could be synthesized in experiments. For PdBi 2 Te 5 , we propose a synthetic route through the growth of Bi 2 Te 3 and PdTe 2 layer by layer.…”

Section: The Calculation Programmentioning

confidence: 58%

Topological superconductor candidates PdBi2Te4 and PdBi2Te5 from a generic ab initio strategy

Luo,

Li,

Qin

et al. 2023

npj Comput Mater

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Superconducting topological metals (SCTMs) have recently emerged as a promising platform of topological superconductivity (TSC) and Majorana zero modes for quantum computation. Despite their importance in both fundamental research and applications, SCTMs are very rare in nature. Here, we propose a strategy to design SCTMs by intercalating the superconducting units into the topological insulators. A program that characterizes the superconducting BdG Chern number of 2D BdG Hamiltonian from ab initio calculations is also developed. Following this strategy, PdBi2Te5 and PdBi2Te4 are found to be experimentally synthesizable and ideal SCTMs. Chiral TSC could be realized in such SCTMs by incorporating topological surface states with Zeeman effect, which can be realized by an external magnetic field or in proximity to ferromagnetic insulator. Our strategy provides a new method for identifying the SCTMs and TSC candidates, and the program makes it possible to design and modulate the TSC candidates from ab initio calculations.

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“…Moreover, considering that metastable PdBi 2 Te 3 , 52 meV and 3 meV higher than PdBi 2 Te 5 and PdBi 2 Te 4 as shown in Fig. 3(b), has been synthesizedin experiments[64,65], we thus conclude that PdBi 2 Te 5 and PdBi 2 Te 4 could be synthesized in experiments. For PdBi 2 Te 5 , we propose a synthetic route through the growth of Bi 2 Te 3 and PdTe 2 layer by layer.…”

mentioning

confidence: 59%

Topological superconductor candidates PdBi$_2$Te$_4$ and PdBi$_2$Te$_5$ from a generic ab initio strategy

Luo¹,

Liu²,

Qu³

et al. 2023

Preprint

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Superconducting topological metals (SCTMs) have recently emerged as a promising platform of topological superconductivity (TSC) and Majorana zero modes(MZMs) for quantum computation.Despite their importance in both fundamental research and applications, SCTMs are very rare in nature. In addition, some superconductors with topological electronic structures have been reported recently, but a feasible program to determine their TSC properties is still lacking. Here, we propose a new strategy to design SCTMs by intercalating the superconducting units into the topological insulators. A program that characterizes the superconducting BdG Chern number of 2D BdG Hamiltonian from ab initio calculations is also developed. Following this strategy, PdBi2Te5 and PdBi2Te4 are found to be experimentally synthesizable and ideal SCTMs. Chiral TSC could be realized in such SCTMs by incorporating topological surface states with Zeeman effect, which can be realized by an external magnetic field or in proximity to ferromagnetic (FM) insulator. Our strategy provides a new method for identifying the SCTMs and TSC candidates, and the program makes it possible to design and modulate the TSC candidates from ab initio calculations. MAINAs one of the most important systems in both fundamental physics and topological quantum computation, topological superconductors (TSCs) have attracted increasing interest for their ability to support Majorana fermions and anyons with non-Abelian statistics [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. Currently, the search for TSCs candidates has been focused on two

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Identify the Nematic Superconductivity of Topological Superconductor Pd$$_x$$Bi$$_2$$Te$$_3$$ by Angle-dependent Upper Critical Field Measurement

Cited by 4 publications

References 43 publications

Sn₂Pd: a possible superconducting material with topological surface states

Sn₂Pd: a possible superconducting material with topological surface states

Topological superconductor candidates PdBi2Te4 and PdBi2Te5 from a generic ab initio strategy

Topological superconductor candidates PdBi$_2$Te$_4$ and PdBi$_2$Te$_5$ from a generic ab initio strategy

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Identify the Nematic Superconductivity of Topological Superconductor Pd$$_x$$Bi$$_2$$Te$$_3$$ by Angle-dependent Upper Critical Field Measurement

Cited by 4 publications

References 43 publications

Sn2Pd: a possible superconducting material with topological surface states

Sn2Pd: a possible superconducting material with topological surface states

Topological superconductor candidates PdBi2Te4 and PdBi2Te5 from a generic ab initio strategy

Topological superconductor candidates PdBi$_2$Te$_4$ and PdBi$_2$Te$_5$ from a generic ab initio strategy

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Sn₂Pd: a possible superconducting material with topological surface states

Sn₂Pd: a possible superconducting material with topological surface states