Evidence of multiband behavior in a new superconductor Ta0.8Zr0.2B with FeB-prototype structure.
CORREA, Lucas Eduardo; NOVA, J. C. C.; FARIA, Leandro Rodrigues de; SANTOS, Frederico Benedetto; LIMA, Bruno Sanches de; NUNES, Carlos Angelo; COELHO, Gilberto Carvalho; ROGL, P.; FISK, Z.; MACHADO, Antonio Jefferson da Silva.
CORREA, Lucas Eduardo; NOVA, J. C. C.; FARIA, Leandro Rodrigues de; SANTOS, Frederico Benedetto; LIMA, Bruno Sanches de; NUNES, Carlos Angelo; COELHO, Gilberto Carvalho; ROGL, P.; FISK, Z.; MACHADO, Antonio Jefferson da Silva.
 Abstract: We present results that show a relation between crystalline structure and superconductivity in the Ta1- xZrxB system. The substitution of Ta for Zr atoms induces a crystal structure change from CrB- to FeBprototype structure in which superconductivity is present with higher superconducting critical temperature Tc. The interrelation between Tc and Zr content shows a dome-like behavior with maximum Tc at x ¼ 0.2. In this sample, bulk superconductivity was observed and characterized by magnetization, electrical resistivity and specific heat measurements, all consistent with a superconducting critical temperature close to 7.8 K. The upper and lower critical field diagrams have no usual behavior which may be connected to a multiband scenario. | |
| Journal of Alloys and Compounds |
| v. 803, p. 597-600 - Ano: 2019 |
| Fator de Impacto: 4,175 |
| http://dx.doi.org/10.1016/j.jallcom.2019.06.186 |  @article={002955649,author = {CORREA, Lucas Eduardo; NOVA, J. C. C.; FARIA, Leandro Rodrigues de; SANTOS, Frederico Benedetto; LIMA, Bruno Sanches de; NUNES, Carlos Angelo; COELHO, Gilberto Carvalho; ROGL, P.; FISK, Z.; MACHADO, Antonio Jefferson da Silva.},title={Evidence of multiband behavior in a new superconductor Ta0.8Zr0.2B with FeB-prototype structure},journal={Journal of Alloys and Compounds},note={v. 803, p. 597-600},year={2019}} |