Large low-temperature magnetoresistance in SrFe2As2 single crystals

被引：15

作者：

Chong, S. V. ^{[1
]}

Williams, G. V. M. ^{[2
]}

Kennedy, J. ^{[3
]}

Fang, F. ^{[3
]}

Tallon, J. L. ^{[1
]}

Kadowaki, K. ^{[4
,5
]}

机构：

[1] Callaghan Innovat Res Ltd, Lower Hutt 5040, New Zealand

[2] Victoria Univ Wellington, MacDiarmid Inst, Sch Chem & Phys Sci, Wellington 6140, New Zealand

[3] GNS Sci, Natl Isotope Ctr, Lower Hutt 5040, New Zealand

[4] Univ Tsukuba, Inst Mat Sci, Tsukuba, Ibaraki 3058573, Japan

[5] Univ Tsukuba, Grad Sch Pure & Appl Sci, Tsukuba, Ibaraki 3058573, Japan

来源：

EPL | 2013年 / 104卷 / 01期

关键词：

SUPERCONDUCTIVITY;

D O I：

10.1209/0295-5075/104/17002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present the first report on a large low-temperature magnetoresistance (MR) of more than 1600% in a SrFe2As2 single crystal and 1300% in a low-energy Ca ion-implanted SrFe2As2 single crystal that occurs before the emergence of crystallographic strain-induced bulk superconductivity arising from a sample aging effect. In accordance to band structure calculations from the literature, which consitently show that more than 2 bands are involved in the transport, we have modeled this large MR at high fields using a 3-carrier scenario rather than solely on quantum linear MR model generally used to explain the MR in iron-pnictides. At and below 20 K the large MR may be due to 3-carrier transport in an inhomogeneous state where there are superconducting and metallic regions. Copyright (C) EPLA, 2013

引用

页数：6

共 31 条

[1] Quantum linear magnetoresistance [J].

Abrikosov, AA .

EUROPHYSICS LETTERS, 2000, 49 (06) :789-793

[2] COMPUTER-SIMULATIONS OF SPUTTERING [J].

BIERSACK, JP .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1987, 27 (01) :21-36

[3] Transport and anisotropy in single-crystalline SrFe2As2 and A0.6K0.4Fe2As2 (A=Sr, Ba) superconductors [J].

Chen, G. F. ;

Li, Z. ;

Dong, J. ;

Li, G. ;

Hu, W. Z. ;

Zhang, X. D. ;

Song, X. H. ;

Zheng, P. ;

Wang, N. L. ;

Luo, J. L. .

PHYSICAL REVIEW B, 2008, 78 (22)

[4] Surface superconductivity on SrFe2As2 single crystals induced by ion implantation [J].

Chong, S. V. ;

Tallon, J. L. ;

Fang, F. ;

Kennedy, J. ;

Kadowaki, K. ;

Williams, G. V. M. .

EPL, 2011, 94 (03)

[5] Magnetoresistivity and microstructure of YBa2Cu3Oy prepared using planetary ball milling [J].

Hamrita, A. ;

Ben Azzouz, F. ;

Madani, A. ;

Ben Salem, M. .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2012, 472 (01) :34-38

[6] Water-induced superconductivity in SrFe2As2 [J].

Hiramatsu, Hidenori ;

Katase, Takayoshi ;

Kamiya, Toshio ;

Hirano, Masahiro ;

Hosono, Hideo .

PHYSICAL REVIEW B, 2009, 80 (05)

[7] Origin of the Spin Density Wave Instability in AFe2As2 (A=Ba,Sr) as Revealed by Optical Spectroscopy [J].

Hu, W. Z. ;

Dong, J. ;

Li, G. ;

Li, Z. ;

Zheng, P. ;

Chen, G. F. ;

Luo, J. L. ;

Wang, N. L. .

PHYSICAL REVIEW LETTERS, 2008, 101 (25)

[8] Both Electron and Hole Dirac Cone States in Ba(FeAs)2 Confirmed by Magnetoresistance [J].

Huynh, Khuong K. ;

Tanabe, Yoichi ;

Tanigaki, Katsumi .

PHYSICAL REVIEW LETTERS, 2011, 106 (21)

[9] To What Extent Iron-Pnictide New Superconductors Have Been Clarified: A Progress Report [J].

Ishida, Kenji ;

Nakai, Yusuke ;

Hosono, Hideo .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2009, 78 (06)

[10] Manifestations of multiple-carrier charge transport in the magnetostructurally ordered phase of BaFe2As2 [J].

Ishida, S. ;

Liang, T. ;

Nakajima, M. ;

Kihou, K. ;

Lee, C. H. ;

Iyo, A. ;

Eisaki, H. ;

Kakeshita, T. ;

Kida, T. ;

Hagiwara, M. ;

Tomioka, Y. ;

Ito, T. ;

Uchida, S. .

PHYSICAL REVIEW B, 2011, 84 (18)

← 1 2 3 4 →