| Autor: |
A E, Böhmer, A, Sapkota, A, Kreyssig, S L, Bud'ko, G, Drachuck, S M, Saunders, A I, Goldman, P C, Canfield |
| Rok vydání: |
2016 |
| Zdroj: |
Physical review letters. 118(10) |
| ISSN: |
1079-7114 |
| Popis: |
We study the effect of applied strain as a physical control parameter for the phase transitions of Ca(Fe_{1-x}Co_{x})_{2}As_{2} using resistivity, magnetization, x-ray diffraction, and ^{57}Fe 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. The magnetostructural transition is gradual as a consequence of using strain instead of pressure or stress as a tuning parameter. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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