English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Conventional type-II superconductivity in locally noncentrosymmetric LaRh2As2 single crystals

Landaeta, J. F., León, A. M., Zwickel, S., Lühmann, T., Brando, M., Geibel, C., et al. (2022). Conventional type-II superconductivity in locally noncentrosymmetric LaRh2As2 single crystals. Physical Review B, 106(1): 014506, pp. 1-10. doi:10.1103/PhysRevB.106.014506.

Item is

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Landaeta, J. F.1, Author           
León, A. M.2, Author           
Zwickel, S.3, Author
Lühmann, T.2, Author           
Brando, M.4, Author           
Geibel, C.5, Author           
Eljaouhari, E.-O.3, Author
Rosner, H.2, Author           
Zwicknagl, G.6, Author           
Hassinger, E.1, Author           
Khim, S.2, Author           
Affiliations:
1Physics of Unconventional Metals and Superconductors, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_2466700              
2Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              
3External Organizations, ou_persistent22              
4Manuel Brando, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863469              
5Christoph Geibel, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863465              
6Max Planck Institute for the Physics of Complex Systems, Max Planck Society, ou_2117288              

Content

show
hide
Free keywords: Arsenic compounds, Cerium compounds, Electron-phonon interactions, Electrons, Iron-based Superconductors, Lanthanum compounds, Magnetic susceptibility, Single crystals, Specific heat, Superconducting transition temperature, Technetium compounds, A.C. susceptibility, Ac susceptibility, F-electrons, Field temperature, Heavy-fermion systems, Magnetic-field, Super conducting phasis, Superconducting transitions, Type-II superconductivity, Zero resistivity, Crystal structure
 Abstract: We report on the observation of superconductivity in LaRh2As2, which is the analog without f electrons of the heavy-fermion system with two superconducting phases CeRh2As2 [S. Khim, Science 373, 1012 (2021)10.1126/science.abe7518]. A zero-resistivity transition, a specific-heat jump, and a drop in magnetic ac susceptibility consistently point to a superconducting transition at a temperature of Tc=0.28 K. The magnetic-field temperature superconducting phase diagrams determined from field-dependent ac-susceptibility measurements reveal small upper critical fields μ0Hc2≈12 mT for H∥ab and μ0Hc2≈9 mT for H∥c. The observed Hc2 is larger than the estimated thermodynamic critical-field Hc derived from the heat-capacity data, suggesting that LaRh2As2 is a type-II superconductor with Ginzburg-Landau parameters κGLab≈1.9 and κGLc≈2.7. The microscopic Eliashberg theory indicates superconductivity to be in the weak-coupling regime with an electron-phonon-coupling constant λe-ph≈0.4. Despite a similar Tc and the same crystal structure as the Ce compound, LaRh2As2 displays conventional superconductivity, corroborating the substantial role of the 4f electrons for the extraordinary superconducting state in CeRh2As2. © 2022 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Open access publication funded by the Max Planck Society.

Details

show
hide
Language(s): eng - English
 Dates: 2022-07-062022-07-06
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1103/PhysRevB.106.014506
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Physical Review B
  Alternative Title : Phys. Rev. B
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: American Physical Society
Pages: - Volume / Issue: 106 (1) Sequence Number: 014506 Start / End Page: 1 - 10 Identifier: ISBN: 24699950 (ISSN)