Pressure dependence of the superconducting and magnetic transition temperatures in Sr2VO3FeAs

S. Holenstein, F. Hummel, Z. Guguchia, S. Kamusella, N. Barbero, H. Ogino, Z. Shermadini, R. Khasanov, A. Amato, T. Shiroka, H.-H. Klauss, E. Morenzoni, D. Johrendt, and H. Luetkens
Phys. Rev. B 104, 104507 – Published 16 September 2021

Abstract

We report muon spin rotation (μSR) and magnetization measurements on superconducting Sr2VO3FeAs under pressure. At ambient pressure, Sr2VO3FeAs undergoes an antiferromagnetic transition of the V moments at TN and becomes superconducting at Tc<TN. As a function of pressure, TN initially decreases while Tc increases. Surprisingly, once TNTc at 0.6 GPa, TN reverses its trend and increases together with Tc, which might indicate a cooperative coupling of the superconducting and the magnetic order.

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  • Received 13 September 2019
  • Revised 12 August 2021
  • Accepted 18 August 2021

DOI:https://doi.org/10.1103/PhysRevB.104.104507

©2021 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

S. Holenstein1,2,*, F. Hummel3, Z. Guguchia1, S. Kamusella4, N. Barbero5, H. Ogino6, Z. Shermadini1,7, R. Khasanov1, A. Amato1, T. Shiroka1,5, H.-H. Klauss4, E. Morenzoni1,2, D. Johrendt3, and H. Luetkens1,†

  • 1Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
  • 2Physik-Institut der Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
  • 3Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13 (D), 81377 München, Germany
  • 4Institute of Solid State and Materials Physics, TU Dresden, DE-01069 Dresden, Germany
  • 5Laboratorium für Festkörperphysik, ETH Zürich, CH-8093 Zurich, Switzerland
  • 6National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8568, Japan
  • 7I. Javakhishvili Tbilisi State University, 0179 Tbilisi, Georgia

  • *stefan.holenstein@psi.ch
  • hubertus.luetkens@psi.ch

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Vol. 104, Iss. 10 — 1 September 2021

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