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Persistent URL	http://purl.org/net/epubs/work/65536
Record Status	Checked
Record Id	65536
Title	Evidence for superconductivity with broken time-reversal symmetry in locally noncentrosymmetric SrPtAs
Contributors	PK Biswas (Paul Scherrer Institute), H Luetkens (Paul Scherrer Institute), T Neupert (Paul Scherrer Institute), T Stürzer (Ludwig-Maximilians-Universität München), C Baines (Paul Scherrer Institute), G Pascua (Paul Scherrer Institute), AP Schnyder (Max-Planck-Institut), MH Fischer (Cornell U.), J Goryo (Hirosaki U.), MR Lees (Warwick U.), H Maeter (TU Dresden), F Brückner (TU Dresden), H Klauss (TU Dresden), M Nicklas (Max Planck Institute for Chemical Physics of Solids), PJ Baker (STFC Rutherford Appleton Lab.), AD Hillier (STFC Rutherford Appleton Lab.), M Sigrist (ETH Zurich), A Amato (Paul Scherrer Institute), D Johrendt (Ludwig-Maximilians-Universität München)
Abstract	We report the magnetic and superconducting properties of locally noncentrosymmetric SrPtAs obtained by muon-spin-rotation/relaxation (μSR) measurements. Zero-field μSR reveals the occurrence of small spontaneous static magnetic fields with the onset of superconductivity. This finding suggests that the superconducting state of SrPtAs breaks time-reversal symmetry. The superfluid density as determined by transverse field μSR is nearly flat approaching T=0 K proving the absence of extended nodes in the gap function. By symmetry, several superconducting states supporting time-reversal-symmetry breaking in SrPtAs are allowed. Out of these, a dominantly d+id (chiral d-wave) order parameter is most consistent with our experimental data
Organisation	ISIS , ISIS-MuSR , STFC
Keywords	ISIS 2013
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Language	English (EN)

Type	Details	URI(s)	Local file(s)	Year
Journal Article	Phys Rev B 87, no. 18 (2013): 180503R.	doi:10.1103/PhysRevB.87.180503		2013