Pressure induced superconductivity in MnSe

Abstract

The rich phenomena in the FeSe and related compounds have attracted great interests as it provides fertile material to gain further insight into the mechanism of high temperature superconductivity. A natural follow-up work was to look into the possibility of superconductivity in MnSe. It was shown that MnP becomes superconducting with Tc ~ 1 K under pressure. We demonstrated in this work that high pressure can effectively suppress the complex magnetic characters of MnSe crystal when observed at ambient condition. MnSe under pressure is found to undergo several structural transformations: the cubic phase first partially transforms to the hexagonal phase at about 12 GPa, the crystal exhibits the coexistence of cubic, hexagonal and orthorhombic phases from 16 GPa to 30 GPa, and above 30 GPa the crystal shows a single orthorhombic phase. Superconductivity with Tc ~ 5 K was first observed at pressure ~12 GPa by magnetic measurements (~16 GPa by resistive measurements). The highest Tc is ~ 9 K (magnetic result) at ~35 GPa. Our observations suggest the observed superconductivity may closely relate to the pressure-induced structural change. However, the interface between the metallic and insulating boundaries may also play an important role to the pressure induced superconductivity in MnSe.

13 pages, 8 figures. TLH, CHH and LZD contribute equally to this work

References in corpus (17)

• Quantum ESPRESSO: a modular and open-source software project for quantum simulations of materials
• Magnetic Order versus superconductivity in the Iron-based layered La(O1-xFx)FeAs systems
• Superconductivity at 36 K in beta-Fe1.01Se with the compression of the interlayer separation under pressure
• Evidence for an electron nematic phase transition in underdoped iron pnictide superconductors
• Superconductivity at 27 K in tetragonal FeSe under high pressure
• Tellurium substitution effect on superconductivity of the alpha-phase Iron Selenide
• The Structural Phase Transition in FeSe (Fe1+dSe)
• Orbital-driven nematicity in FeSe
• Lattice and magnetic instabilities in CaFe2As2: A single crystal neutron diffraction study
• Crystal structure of the new FeSe1-x superconductor
• Origin of the tetragonal-to-orthorhombic (nematic) phase transition in FeSe: a combined thermodynamic and NMR study
• Pressure induced superconductivity on the border of magnetic order in MnP
• The Absence of Superconductivity in Single Phase CaFe2As2 under Hydrostatic Pressure
• Pressure-induced superconductivity in single crystal CaFe2As2
• High temperature superconductivity (Tc onset at 34K) in the high pressure orthorhombic phase of FeSe
• Higher superconducting transition temperature by breaking the universal pressure relation
• Pressure-induced high-temperature superconductivity retained at ambient

Cited by in corpus (3)

• Emergence of superconductivity on the border of antiferromagnetic order in RbMn6Bi5 under high pressure: A new family of Mn-based superconductors
• Flipping of antiferromagnetic to superconducting states in pressurized quasi-one-dimensional manganese-based compounds
• Pressure-induced transitions in FePS${}_3$: Structural, magnetic and electronic properties