Pressure induced re-emergence of superconductivity in superconducting topological insulator Sr0.065Bi2Se3

Abstract

The recent-discovered Sr${}_x$Bi${}_2$Se${}_3$ superconductor provides an alternative and ideal material base for investigating possible topological superconductivity. Here, we report that in Sr${}_{0.065}$Bi${}_2$Se${}_3$, the ambient superconducting phase is gradually depressed upon the application of external pressure. At high pressure, a second superconducting phase emerges at above 6 GPa, with a maximum $T_c$ value of $\sim$8.3 K. The joint investigations of the high-pressure synchrotron x-ray diffraction and electrical transport properties reveal that the re-emergence of superconductivity in Sr${}_{0.065}$Bi${}_2$Se${}_3$ is closely related to the structural phase transition from ambient rhombohedral phase to high-pressure monoclinic phase around 6 GPa, and further to another high-pressure tetragonal phase above 25 GPa.

arXiv comment13 pages, 4 figures

References in corpus (25)

• Topological insulators and superconductors
• Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells
• $Z_2$ Topological Order and the Quantum Spin Hall Effect
• Quantum Spin Hall Insulator State in HgTe Quantum Wells
• Superconducting proximity effect and Majorana fermions at the surface of a topological insulator
• A topological Dirac insulator in a quantum spin Hall phase : Experimental observation of first strong topological insulator
• Superconductivity in CuxBi2Se3 and its implications for pairing in the undoped topological insulator
• Odd-Parity Topological Superconductors: Theory and Application to Cu${}_x$Bi${}_2$Se${}_3$
• Topological Superconductivity in CuxBi2Se3
• The Coexistence of Superconductivity and Topological Order in the Bi2Se3 Thin Films
• Observation of topological order in a Superconducting doped topological insulator (based on the Bi2Se3 class)
• Reemerging superconductivity at 48 K across quantum criticality in iron chalcogenides
• Pressure induced Superconductivity in Topological Compound Bi2Te3
• Bulk superconducting phase with a full energy gap in the doped topological insulator Cu_xBi_2Se_3
• Topological Superconductor Bi2Te3/NbSe2 heterostructures
• Superconductivity with topological surface state in SrxBi2Se3
• Pressure-Induced Unconventional Superconducting Phase in the Topological Insulator Bi2Se3
• Local Measurements of the Superconducting Pairing Symmetry in CuxBi2Se3
• Proximity-induced high-temperature superconductivity in topological insulators Bi2Se3 and Bi2Te3
• Majorana Fermions and Exotic Surface Andreev Bound States in Topological Superconductors: Application to CuxBi2Se3
• Superconductivity in the doped topological insulator Cu${}_x$Bi${}_2$Se${}_3$ under high pressure
• Turning a Band Insulator Into an Exotic Superconductor
• Electronic structure of a superconducting topological insulator Sr-doped Bi2Se3
• Quantum oscillations in topological superconductor candidate Cu${}_{0.25}$Bi${}_2$Se${}_3$
• Electronic structure and relaxation dynamics in a superconducting topological material

Cited by in corpus (14)

• Pressure-induced Reemergence of Superconductivity in Topological Kagome Metal CsV3Sb5
• A new topological semimetal with iso-energetic Weyl fermions in TaAs under high pressure
• Effect of the type I to type II Weyl semimetal topological transition on superconductivity
• Topological Dirac line nodes and superconductivity coexist in SnSe at high pressure
• Pressure-induced Superconductivity in the Three-component Fermion Topological Semimetal Molybdenum Phosphide
• Pressure-Induced Modification of Anomalous Hall Effect in Layered Fe${}_3$GeTe${}_2$
• High-pressure study of the basal-plane anisotropy of the upper critical field of the topological superconductor SrxBi2Se3
• Pressure-induced reemergence of superconductivity in BaIr2Ge7 and Ba3Ir4Ge16 with cage structures
• Strong magnetic field induces superconductivity in Weyl semi - metal
• Universal superconductivity phase diagram for pressurized tetradymite topological insulators
• Evidence for conventional superconductivity in Sr0.1Bi2Se3 from high pressure studies
• An increase in $T_c$ under hydrostatic pressure in the superconducting doped topological insulator Nb${}_{0.25}$Bi${}_2$Se${}_3$
• Tip-induced Superconductivity
• Upper magnetic field in superconducting Dirac semi-metal