| Title | Large low-temperature magnetoresistance in SrFe2As2 single crystals |
| Publication Type | Journal Article |
| Year of Publication | 2013 |
| Authors | Chong, S.V., Williams G.V.M., Kennedy J., Fang F., Tallon J.L., and Kadowaki K. |
| Journal | EPL |
| Volume | 104 |
| Issue | 1 |
| Date Published | 2013 |
| ISSN | 02955075 (ISSN) |
| Abstract | 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 EPLA, 2013. |
| URL | http://www.scopus.com/inward/record.url?eid=2-s2.0-84887841973&partnerID=40&md5=ea73d439cb28c1f63b820a5244b49ba0 |
| DOI | 10.1209/0295-5075/104/17002 |
