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Title: Type-I superconductivity in YbSb2 single crystals

Abstract

We present evidence of type-I superconductivity in YbSb2 single crystals from dc and ac magnetization, heat capacity, and resistivity measurements. The critical temperature and critical field are determined to be Tc≈ 1.3 K and Hc≈ 55 Oe. A small Ginzburg-Landau parameter κ= 0.05, together with typical magnetization isotherms of type-I superconductors, small critical field values, a strong differential paramagnetic effect signal, and a field-induced change from second- to first-order phase transition, confirms the type-I nature of the superconductivity in YbSb2. A possible second superconducting state is observed in the radio-frequency susceptibility measurements, with Tc(2)≈ 0.41 K and Hc(2)≈ 430 Oe.

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1047726
Report Number(s):
IS-J 7733
Journal ID: 1098-0121
DOE Contract Number:  
DE-AC02-07CH11358
Resource Type:
Journal Article
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 85; Journal Issue: 22
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Zhao, Liang L., Lausberg, Stefan, Kim, Hyunsoo, Tanatar, Makariy A., Brando, Manuel, Prozorov, Ruslan, and Morosan, E. Type-I superconductivity in YbSb2 single crystals. United States: N. p., 2012. Web. doi:10.1103/PhysRevB.85.214526.
Zhao, Liang L., Lausberg, Stefan, Kim, Hyunsoo, Tanatar, Makariy A., Brando, Manuel, Prozorov, Ruslan, & Morosan, E. Type-I superconductivity in YbSb2 single crystals. United States. doi:10.1103/PhysRevB.85.214526.
Zhao, Liang L., Lausberg, Stefan, Kim, Hyunsoo, Tanatar, Makariy A., Brando, Manuel, Prozorov, Ruslan, and Morosan, E. Mon . "Type-I superconductivity in YbSb2 single crystals". United States. doi:10.1103/PhysRevB.85.214526.
@article{osti_1047726,
title = {Type-I superconductivity in YbSb2 single crystals},
author = {Zhao, Liang L. and Lausberg, Stefan and Kim, Hyunsoo and Tanatar, Makariy A. and Brando, Manuel and Prozorov, Ruslan and Morosan, E.},
abstractNote = {We present evidence of type-I superconductivity in YbSb2 single crystals from dc and ac magnetization, heat capacity, and resistivity measurements. The critical temperature and critical field are determined to be Tc≈ 1.3 K and Hc≈ 55 Oe. A small Ginzburg-Landau parameter κ= 0.05, together with typical magnetization isotherms of type-I superconductors, small critical field values, a strong differential paramagnetic effect signal, and a field-induced change from second- to first-order phase transition, confirms the type-I nature of the superconductivity in YbSb2. A possible second superconducting state is observed in the radio-frequency susceptibility measurements, with Tc(2)≈ 0.41 K and Hc(2)≈ 430 Oe.},
doi = {10.1103/PhysRevB.85.214526},
journal = {Physical Review B},
number = 22,
volume = 85,
place = {United States},
year = {2012},
month = {6}
}