TY - JOUR
T1 - Large Magnon Contributions to Thermal Conductance in Quasi-One-Dimensional Fe-Based Ladder Compounds BaFe2 (S1-xSex)3
AU - Du, Fei
AU - Ueda, Yutaka
AU - Ohgushi, Kenya
N1 - Funding Information:
We thank Y. Hirata, S. Imaizumi, T. Aoyama, Y. Imai, and Y. Nambu for fruitful discussions. This work is financially supported by JSPS KAKENHI Grants No. JP19H05823, No. JP19H05822, No. JP19K21837, No. JP18H01159, No. JP16H04019, No. JP16H01062, and No. JP18H04302, Murata Science Foundation, and Mitsubishi Foundation.
Funding Information:
We thank Y. Hirata, S. Imaizumi, T. Aoyama, Y. Imai, and Y. Nambu for fruitful discussions. This work is financially supported by JSPS KAKENHI Grants No. JP19H05823, No. JP19H05822, No. JP19K21837, No. JP18H01159, No. JP16H04019, No. JP16H01062, and No. JP18H04302, Murata Science Foundation, and Mitsubishi Foundation.
Publisher Copyright:
© 2019 American Physical Society.
PY - 2019/8/21
Y1 - 2019/8/21
N2 - We investigate the magnetic phase diagram of a solid solution BaFe2(S1-xSex)3, which is categorized into a new family of Fe-based superconductors hosting a quasi-one-dimensional ladder lattice. We show that the antiferromagnetic order is largely suppressed due to bicritical fluctuations in the vicinity of the magnetic transition at x=0.23 from the stripe-type to block-type ordering. Moreover, we observed large magnon contributions in the thermal conductance in a wide x range. These results indicate the quasi-one-dimensional nature of spin systems and give a solid foundation for modeling the material toward unraveling the microscopic mechanism of superconductivity.
AB - We investigate the magnetic phase diagram of a solid solution BaFe2(S1-xSex)3, which is categorized into a new family of Fe-based superconductors hosting a quasi-one-dimensional ladder lattice. We show that the antiferromagnetic order is largely suppressed due to bicritical fluctuations in the vicinity of the magnetic transition at x=0.23 from the stripe-type to block-type ordering. Moreover, we observed large magnon contributions in the thermal conductance in a wide x range. These results indicate the quasi-one-dimensional nature of spin systems and give a solid foundation for modeling the material toward unraveling the microscopic mechanism of superconductivity.
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U2 - 10.1103/PhysRevLett.123.086601
DO - 10.1103/PhysRevLett.123.086601
M3 - Article
C2 - 31491218
AN - SCOPUS:85071896913
SN - 0031-9007
VL - 123
JO - Physical Review Letters
JF - Physical Review Letters
IS - 8
M1 - 086601
ER -