TY - JOUR
T1 - Pressure-induced superconductivity from doping-induced antiferromagnetic phase of 112-type Ca1-xLaxFeAs2
AU - Kitagawa, Shunsaku
AU - Sekiya, Taishi
AU - Fujiyoshi, Yo
AU - Araki, Shingo
AU - Kobayashi, Tatsuo C.
AU - Nishimoto, Naoki
AU - Mizukami, Tasuku
AU - Ioka, Satoshi
AU - Fujimura, Kazunori
AU - Kudo, Kazutaka
AU - Nohara, Minoru
N1 - Funding Information:
Acknowledgments Part of this work was performed at the Advanced Science Research Center, Okayama University. This work was partially supported by Grants-in-Aid for Scientific Research (Nos. JP15H01047, JP23244075, JP25400372, and JP26287082) provided by the Japan Society for the Promotion of Science (JSPS) and the Program for Advancing Strategic International Networks to Accelerate the Circulation of Talented Researchers from JSPS.
Publisher Copyright:
© 2017 The Physical Society of Japan.
PY - 2017/11/15
Y1 - 2017/11/15
N2 - The effects of pressure on antiferromagnetic (AFM) and superconducting phase transitions of 112-type Ca1-xLaxFeAs2 were studied, and the in-plane electrical resistivity ρab was measured with an indenter-type pressure cell. The AFM phase transition temperatures of TN = 47, 63, and 63 K at ambient pressure for x = 0.18, 0.21, and 0.26 was suppressed by applying pressure P, with superconductivity emerging at critical pressures of Pc ≈ 0, 1.5, and 3.4 GPa, respectively. Correspondingly, the slope of TN against P decreased as dTN/P ≈ -15 and -2 K/GPa for x = 0.21 and 0.26, respectively. Thus, although the AFM phase was stabilized with La doping x, the AFM phase was suppressed by pressure, and superconductivity eventually emerged.
AB - The effects of pressure on antiferromagnetic (AFM) and superconducting phase transitions of 112-type Ca1-xLaxFeAs2 were studied, and the in-plane electrical resistivity ρab was measured with an indenter-type pressure cell. The AFM phase transition temperatures of TN = 47, 63, and 63 K at ambient pressure for x = 0.18, 0.21, and 0.26 was suppressed by applying pressure P, with superconductivity emerging at critical pressures of Pc ≈ 0, 1.5, and 3.4 GPa, respectively. Correspondingly, the slope of TN against P decreased as dTN/P ≈ -15 and -2 K/GPa for x = 0.21 and 0.26, respectively. Thus, although the AFM phase was stabilized with La doping x, the AFM phase was suppressed by pressure, and superconductivity eventually emerged.
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U2 - 10.7566/JPSJ.86.113705
DO - 10.7566/JPSJ.86.113705
M3 - Article
AN - SCOPUS:85036546439
SN - 0031-9015
VL - 86
JO - journal of the physical society of japan
JF - journal of the physical society of japan
IS - 11
M1 - 113705
ER -