Volume 122, Number 6, June 2018
|Number of page(s)||5|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||02 August 2018|
Effects of vanadium doping on BaFe2As2
1 Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials & Micro-nano Devices, Renmin University - Beijing 100872, China
2 Neutron Scattering Division, Oak Ridge National Laboratory - Oak Ridge, TN 37831, USA
Received: 2 May 2018
Accepted: 10 July 2018
We report an investigation of the structural, magnetic and electronic properties of Ba(Fe1−xVx)2As2 using x-ray, transport, magnetic susceptibility and neutron scattering measurements. The vanadium substitutions in Fe sites are possible up to ∼40%. Hall effect measurements indicate strong hole-doping effect through V doping, while no superconductivity is observed in all samples down to 2 K. The antiferromagnetic and structural transition temperature of BaFe2As2 is gradually suppressed to finite temperature, then vanishes at with the emergence of spin glass behavior, suggesting an avoided quantum critical point (QCP). Our results demonstrate that the avoided QCP and spin glass state which were previously reported in the superconducting phase of Co/Ni-doped BaFe2As2 can also be realized in non-superconducting Ba(Fe1−xVx)2As2.
PACS: 74.70.Xa – Pnictides and chalcogenides / 74.62.Dh – Effects of crystal defects, doping and substitution
© EPLA, 2018
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