@article{a539e2eb4e2d4d3aa60b99d85ddfeffb,
title = "Universal phase diagram of superconductivity and charge density wave versus high hydrostatic pressure in pure and Se-doped 1T-Ta S2",
abstract = "The coexistence of superconductivity (SC) and charge density waves (CDWs) was investigated for pure and Se-doped 1T-TaS2 via electrical resistivity under hydrostatic pressure. A universal superconducting phase diagram was revealed on the border of CDWs. Unlike isovalent S/Se doping and uniaxial pressure, the application of high hydrostatic pressure suppresses CDW more sensitively and thoroughly with the critical pressures Pc(x)∼4.70-6.55 GPa. A pressure-induced superconducting state coexists with various CDWs, then bulk SC emerges along with the complete collapse of various CDWs. The superconducting transition temperature increases monotonously up to ∼7.3K at 15 GPa without a domelike shape. The results clarify that the superconducting Cooper pairing is associated with the CDWs' instability near Pc(x). Above Pc(x), the monotonous increase of Tc is attributed to different evolutions of the electronic structures and phonon vibration spectra under hydrostatic and uniaxial pressures and a further inhibition of undetected CDWs.",
author = "Bosen Wang and Yu Liu and Xuan Luo and Kento Ishigaki and Kazuyuki Matsubayashi and Wenjian Lu and Yuping Sun and Jinguang Cheng and Yoshiya Uwatoko",
note = "Funding Information: The coexistence of superconductivity (SC) and charge density waves (CDWs) was investigated for pure and Se-doped 1 T - Ta S 2 via electrical resistivity under hydrostatic pressure. A universal superconducting phase diagram was revealed on the border of CDWs. Unlike isovalent S/Se doping and uniaxial pressure, the application of high hydrostatic pressure suppresses CDW more sensitively and thoroughly with the critical pressures P c ( x ) ∼ 4.70 – 6.55 GPa. A pressure-induced superconducting state coexists with various CDWs, then bulk SC emerges along with the complete collapse of various CDWs. The superconducting transition temperature increases monotonously up to ∼ 7.3 K at 15 GPa without a domelike shape. The results clarify that the superconducting Cooper pairing is associated with the CDWs{\textquoteright} instability near P c ( x ) . Above P c ( x ) , the monotonous increase of T c is attributed to different evolutions of the electronic structures and phonon vibration spectra under hydrostatic and uniaxial pressures and a further inhibition of undetected CDWs. Chinese Academy of Sciences 10.13039/501100002367 XDB07020100 QYZDB-SSW-SLH013 2018010 National Natural Science Foundation of China 10.13039/501100001809 11674326 11774351 11574377 U1232139 Japan Society for the Promotion of Science 10.13039/501100001691 15F15023 marker B_SUGG Funding Information: We thank S. Nagasaki for technical assistance and Dr. J. Gouchi, Professor G. H. Cao, and Dr. L. J. Li for useful discussions. This work is supported by the National Key Research and Development Program of China (2016YFA0300404), The Strategic Priority Research Program and Key Research Program of Frontier Sciences of the Chinese Academy of Sciences (XDB07020100, QYZDB-SSW-SLH013), The National Nature Science Foundation of China (11674326, 11774351, and 11574377), Joint Funds of the National Natural Science Foundation and CAS{\textquoteright} Large-scale Scientific Facility (U1232139), a JSPS fellowship for foreign researchers (15F15023), IOP Hundred-Talent Program (Y7K5031X61), and the Youth Promotion Association, CAS (2018010). Publisher Copyright: {\textcopyright} 2018 American Physical Society.",
year = "2018",
month = jun,
day = "25",
doi = "10.1103/PhysRevB.97.220504",
language = "English",
volume = "97",
journal = "Physical Review B",
issn = "2469-9950",
publisher = "American Physical Society",
number = "22",
}