Critical current density and mechanism of vortex pinning in K x Fe 2-y Se 2 doped with S

Lei, Hechang; Petrovic, C.

doi:10.1103/PhysRevB.84.052507

Title: Critical current density and mechanism of vortex pinning in K $_{x}$ Fe $_{2 - y}$ Se $_{2}$ doped with S

Journal Article · Mon Aug 01 00:00:00 EDT 2011 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PhysRevB.84.052507· OSTI ID:1385597

Lei, Hechang; Petrovic, C.

We report the critical current density J c in K x Fe 2 - y Se 2 - z S z crystals. The J c can be enhanced significantly with optimal S doping ( z = 0.99 ). For K 0.70 ( 7 ) Fe 1.55 ( 7 ) Se 1.01 ( 2 ) S 0.99 ( 2 ) , the weak fishtail effect is found for H ∥ c . The normalized vortex pinning forces follow the scaling law with a maximum position at 0.41 of the reduced magnetic field. These results demonstrate that the small size normal point defects dominate the vortex pinning mechanism.

Cite

Export

Save

Research Organization:: Energy Frontier Research Centers (EFRC) (United States). Center for Emergent Superconductivity (CES)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

DOE Contract Number:: AC02-98CH10886

OSTI ID:: 1385597

Journal Information:: Physical Review. B, Condensed Matter and Materials Physics, Vol. 84, Issue 5; Related Information: CES partners with Brookhaven National Laboratory (BNL); Argonne National Laboratory; University of Illinois, Urbana-Champaign; Los Alamos National Laboratory; ISSN 1098-0121

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

References (21)

Small anisotropy, weak thermal fluctuations, and high field superconductivity in Co-doped iron pnictide Ba(Fe1−xCox)2As2 Yamamoto, A.; Jaroszynski, J.; Tarantini, C. Applied Physics Letters, Vol. 94, Issue 6 https://doi.org/10.1063/1.3081455	journal	February 2009
Anisotropy of the iron pnictide superconductor $Ba {({Fe}_{1 - x} {Co}_{x})}_{2} {As}_{2}$ $(x = 0.074, T_{c} = 23 K)$ Tanatar, M. A.; Ni, N.; Martin, C. Physical Review B, Vol. 79, Issue 9 https://doi.org/10.1103/PhysRevB.79.094507	journal	March 2009
Superconductivity in the iron selenide $K_{x} {Fe}_{2} {Se}_{2}$ $(0 \leq x \leq 1.0)$ Guo, Jiangang; Jin, Shifeng; Wang, Gang Physical Review B, Vol. 82, Issue 18 https://doi.org/10.1103/PhysRevB.82.180520	journal	November 2010
Anisotropy in transport and magnetic properties of $K_{0.64}$ Fe $_{1.44}$ Se $_{2}$ Lei, Hechang; Petrovic, C. Physical Review B, Vol. 83, Issue 18 https://doi.org/10.1103/PhysRevB.83.184504	journal	May 2011
Flux pinning mechanisms in type II superconductors Dew-Hughes, D. Philosophical Magazine, Vol. 30, Issue 2 https://doi.org/10.1080/14786439808206556	journal	August 1974
Anisotropic $H_{c 2}$ of $K_{0.8}$ Fe $_{1.76}$ Se $_{2}$ determined up to 60 T Mun, E. D.; Altarawneh, M. M.; Mielke, C. H. Physical Review B, Vol. 83, Issue 10 https://doi.org/10.1103/PhysRevB.83.100514	journal	March 2011
Comparative study of upper critical field $H_{c 2}$ and second magnetization peak $H_{s p}$ in hole- and electron-doped ${BaFe}_{2} {As}_{2}$ superconductor Sun, D. L.; Liu, Y.; Lin, C. T. Physical Review B, Vol. 80, Issue 14 https://doi.org/10.1103/PhysRevB.80.144515	journal	October 2009
Anisotropic magnetism, resistivity, London penetration depth and magneto-optical imaging of superconducting K _0.80 Fe _1.76 Se ₂ single crystals Hu, R.; Cho, K.; Kim, H. Superconductor Science and Technology, Vol. 24, Issue 6 https://doi.org/10.1088/0953-2048/24/6/065006	journal	March 2011
Upper critical fields well above 100 T for the superconductor ${SmFeAsO}_{0.85} F_{0.15}$ with $T_{c} = 46 K$ Senatore, C.; Flükiger, R.; Cantoni, M. Physical Review B, Vol. 78, Issue 5 https://doi.org/10.1103/PhysRevB.78.054514	journal	August 2008
Magnetization of Hard Superconductors Bean, C. P. Physical Review Letters, Vol. 8, Issue 6 https://doi.org/10.1103/PhysRevLett.8.250	journal	March 1962
Surface barrier and bulk pinning in MTG YBaCuO Zhang, L.; Qiao, Q.; Xu, X. B. Physica C: Superconductivity and its Applications, Vol. 445-448 https://doi.org/10.1016/j.physc.2006.04.008	journal	October 2006
Single crystals of LnFeAsO1−xFx (Ln=La, Pr, Nd, Sm, Gd) and Ba1−xRbxFe2As2: Growth, structure and superconducting properties Karpinski, J.; Zhigadlo, N. D.; Katrych, S. Physica C: Superconductivity, Vol. 469, Issue 9-12 https://doi.org/10.1016/j.physc.2009.03.048	journal	May 2009
Pauli-limited upper critical field of ${Fe}_{1 + y} {Te}_{1 - x} {Se}_{x}$ Lei, Hechang; Hu, Rongwei; Choi, E. S. Physical Review B, Vol. 81, Issue 9 https://doi.org/10.1103/PhysRevB.81.094518	journal	March 2010
Surface Barrier and Bulk Pinning in MgB2 Superconductor Pissas, M.; Moraitakis, E.; Stamopoulos, D. Journal of Superconductivity: Incorporating Novel Magnetism, Vol. 14, Issue 5, p. 615-621 https://doi.org/10.1023/A:1012944216895	journal	January 2001
Anisotropic critical currents in Ba ₂ YCu ₃ O ₇ analyzed using an extended Bean model Gyorgy, E. M.; van Dover, R. B.; Jackson, K. A. Applied Physics Letters, Vol. 55, Issue 3 https://doi.org/10.1063/1.102387	journal	July 1989
Iron-Based Layered Superconductor La[O _1- _x F _x ]FeAs ( x = 0.05−0.12) with T _c = 26 K Kamihara, Yoichi; Watanabe, Takumi; Hirano, Masahiro Journal of the American Chemical Society, Vol. 130, Issue 11 https://doi.org/10.1021/ja800073m	journal	March 2008
Fishtail effect and the vortex phase diagram of single crystal Ba0.6K0.4Fe2As2 Yang, Huan; Luo, Huiqian; Wang, Zhaosheng Applied Physics Letters, Vol. 93, Issue 14 https://doi.org/10.1063/1.2996576	journal	October 2008
Nearly isotropic superconductivity in (Ba,K)Fe2As2 Yuan, H. Q.; Singleton, J.; Balakirev, F. F. Nature, Vol. 457, Issue 7229 https://doi.org/10.1038/nature07676	journal	January 2009
Two-band superconductivity in LaFeAsO0.89F0.11 at very high magnetic fields Hunte, F.; Jaroszynski, J.; Gurevich, A. Nature, Vol. 453, Issue 7197 https://doi.org/10.1038/nature07058	journal	May 2008
The flux pinning force and vortex phase diagram of single crystal Yadav, C. S.; Paulose, P. L. Solid State Communications, Vol. 151, Issue 3 https://doi.org/10.1016/j.ssc.2010.11.030	journal	February 2011
Vortex phase diagram of $Ba {({Fe}_{0.93} {Co}_{0.07})}_{2} {As}_{2}$ single crystals Prozorov, R.; Ni, N.; Tanatar, M. A. Physical Review B, Vol. 78, Issue 22 https://doi.org/10.1103/PhysRevB.78.224506	journal	December 2008

Similar Records

Critical current density and mechanism of vortex pinning in K_xFe_2-ySe₂ doped with S

Journal Article · Mon Aug 15 00:00:00 EDT 2011 · Physical Review. B, Condensed Matter and Materials Physics · OSTI ID:1385597

Lei, Hechang; Petrovic, C.

Giant increase in critical current density of K

_{x}

_{2 - y}

_{2}

single crystals

Journal Article · Thu Dec 01 00:00:00 EST 2011 · Physical Review. B, Condensed Matter and Materials Physics · OSTI ID:1385597

Lei, Hechang; Petrovic, C.

Doping- and irradiation-controlled pinning of vortices in BaFe

_{2}

(As

_{1 - x}

_{x}

)

_{2}

single crystals

Journal Article · Sat Oct 01 00:00:00 EDT 2011 · Physical Review. B, Condensed Matter and Materials Physics · OSTI ID:1385597

Fang, L.; Jia, Y.; Schlueter, J. A.; +7 more

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
phonons
thermal conductivity
energy storage (including batteries and capacitors)
superconductivity
defects
spin dynamics

Title: Critical current density and mechanism of vortex pinning in K x Fe 2 - y Se 2 doped with S

Citation Formats

References (21)

Similar Records

Related Subjects

Title: Critical current density and mechanism of vortex pinning in K $_{x}$ Fe $_{2 - y}$ Se $_{2}$ doped with S