Effect of biaxial strain on the phase transitions of
Journal Article
·
· Physical Review Letters
- Ames Lab., Ames, IA (United States)
- Ames Lab. and Iowa State Univ., Ames, IA (United States)
Here, we study the effect of applied strain as a physical control parameter for the phase transitions of Ca ( Fe1$$-$$xCox)2As2 using resistivity, magnetization, x-ray diffraction, and 57Fe Mössbauer spectroscopy. Biaxial strain, namely, compression of the basal plane of the tetragonal unit cell, is created through firm bonding of samples to a rigid substrate via differential thermal expansion. This strain is shown to induce a magnetostructural phase transition in originally paramagnetic samples, and superconductivity in previously nonsuperconducting ones. Lastly, the magnetostructural transition is gradual as a consequence of using strain instead of pressure or stress as a tuning parameter.
- Research Organization:
- Ames Lab., Ames, IA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC02-07CH11358; PD-226; GBMF4411; AC02-06CH11357; DMR10-05765
- OSTI ID:
- 1347409
- Alternate ID(s):
- OSTI ID: 1346596; OSTI ID: 1349897
- Report Number(s):
- IS-J-9179; IS-J-9251; PRLTAO; TRN: US1700618
- Journal Information:
- Physical Review Letters, Vol. 118, Issue 10; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 20 works
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