Pressure-induced bulk superconductivity in a layered transition-metal dichalcogenide 1T-tantalum selenium

doi:10.1103/PhysRevB.95.220501

HFCAS OpenIR > 中科院固体物理研究所

	Pressure-induced bulk superconductivity in a layered transition-metal dichalcogenide 1T-tantalum selenium
	Wang, Bosen 1,2,3; Liu, Yu 4; Ishigaki, Kento 1; Matsubayashi, Kazuyuki 1,5; Cheng, Jinguang 2,3; Lu, Wenjian4 ; Sun, Yuping4,6,7 ; Uwatoko, Yoshiya 1
	2017-06-09
发表期刊	PHYSICAL REVIEW B
摘要	We report pressure-driven superconductivity (SC) in the vicinity of a commensurate charge-density wave (CCDW) in transition-metal dichalcogenides (TMDs) 1T-TaSe2 by simultaneous resistivity and ac susceptibility. The superconducting phase enters at 4.5 GPa and bulk SC emerges along with the collapse of the CCDW phase at a critical pressure P-c similar to 6.5 GPa. Higher than P-c, the superconducting transition temperature (T-c) keeps increasing linearly, without a dome-shaped superconducting diagram in our pressure range. T-c reaches similar to 5.3 K at 15 GPa, which is the highest among all 1T-TMDs. A comprehensive analysis shows that electronic correlations of the CCDW phase open energy gaps, which prohibit Cooper pairing, while the superconducting channels and CCDW domain wall coexist in three dimensions above P-c. The evolutions of the Fermi surface and the softening of phonon modes under pressure are proposed to explain the monotonic increase of T-c. The findings reveal the interplay of CCDW and SC in 1T-TaSe2 by a clean method, viz., high pressure, and shed light on the underlying superconducting mechanism in the relevant systems.
文章类型	Article
WOS标题词	Science & Technology ; Physical Sciences
DOI	10.1103/PhysRevB.95.220501
关键词[WOS]	LOW-TEMPERATURE ; 1T-TASE2
收录类别	SCI
语种	英语
项目资助者	National Key Research and Development Program of China(2016YFA0300404) ; National Key Research and Development Program of China(2016YFA0300404) ; National Key Research and Development Program of China(2016YFA0300404) ; National Key Research and Development Program of China(2016YFA0300404) ; National Natural Science Foundation of China(11404342 ; National Natural Science Foundation of China(11404342 ; National Natural Science Foundation of China(11404342 ; National Natural Science Foundation of China(11404342 ; National Natural Science Foundation ; National Natural Science Foundation ; National Natural Science Foundation ; National Natural Science Foundation ; Chinese Academy of Sciences' Large-Scale Scientific Facility(U1232139) ; Chinese Academy of Sciences' Large-Scale Scientific Facility(U1232139) ; Chinese Academy of Sciences' Large-Scale Scientific Facility(U1232139) ; Chinese Academy of Sciences' Large-Scale Scientific Facility(U1232139) ; JSPS KAKENHI(15H03681) ; JSPS KAKENHI(15H03681) ; JSPS KAKENHI(15H03681) ; JSPS KAKENHI(15H03681) ; JSPS fellowship(15F15023) ; JSPS fellowship(15F15023) ; JSPS fellowship(15F15023) ; JSPS fellowship(15F15023) ; 11674326) ; 11674326) ; 11674326) ; 11674326)
WOS研究方向	Physics
WOS类目	Physics, Condensed Matter
WOS记录号	WOS:000402971000001
引用统计	被引频次：33[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/31941
专题	中科院固体物理研究所
作者单位	1.Univ Tokyo, Inst Solid State Phys, Kashiwanoha 5-1-5, Kashiwa, Chiba 2778581, Japan 2.Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China 4.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China 5.Univ Electrocommun, Dept Engn Sci, Chofu, Tokyo 1828585, Japan 6.Chinese Acad Sci, High Magnet Field Lab, Hefei 230031, Peoples R China 7.Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Wang, Bosen,Liu, Yu,Ishigaki, Kento,et al. Pressure-induced bulk superconductivity in a layered transition-metal dichalcogenide 1T-tantalum selenium[J]. PHYSICAL REVIEW B,2017,95(22):1-6.
APA	Wang, Bosen.,Liu, Yu.,Ishigaki, Kento.,Matsubayashi, Kazuyuki.,Cheng, Jinguang.,...&Uwatoko, Yoshiya.(2017).Pressure-induced bulk superconductivity in a layered transition-metal dichalcogenide 1T-tantalum selenium.PHYSICAL REVIEW B,95(22),1-6.
MLA	Wang, Bosen,et al."Pressure-induced bulk superconductivity in a layered transition-metal dichalcogenide 1T-tantalum selenium".PHYSICAL REVIEW B 95.22(2017):1-6.

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