Abstract
The Fe1 +yTe1 –xSex single crystals with the various Se/Te ratios were studied by the microwave absorption and direct current resistivity measurements. The comparison of the microwave absorption data and the resistivity versus temperature made it possible to separate the contributions of two types of spin fluctuations. One of them is due to the anisotropic magnetic (nematic) fluctuations. It is observed over the wide temperature range from ~30 to 150 or 200 K. In FeSe it has the maximum close to the structural transition temperature. Another MWA anomaly is located in the narrow temperature range above the superconducting transition. It is likely due to the antiferromagnetic fluctuations. Annealing of a sample at the temperature around 300°C in the oxygen atmosphere made it possible to exclude the effect of excess iron on the observed anomalies.
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REFERENCES
A. E. Böhmer and A. Kreisel, J. Phys.: Condens. Matter 30, 023001 (2018).
Chih-Wei Luo, Po Chung Cheng, Shun-Hung Wang, et al., Quantum Mater. 2, 32 (2017).
T. Imai, K. Ahilan, F. L. Ning, et al., Phys. Rev. Lett. 102, 177005 (2009).
S.-H. Baek, D. V. Efremov, J. M. Ok, et al., Nat. Mater. 14, 210 (2015).
Qisi Wang, Yao Shen, Bingying Pan, et al., Nat. Mater. 15, 159 (2016).
L. C. Rhodes, M. D. Watson, A. A. Haghighirad, et al., Phys. Rev. B 98, 180503(R) (2018).
J. P. Sun, K. Matsuura, G. Z. Ye, et al., Nat. Commun. 7, 12146 (2016).
T. Terashima, N. Kikugawa, S. Kasahara, et al., Phys. Rev. B 93, 180503(R) (2016).
R. Khasanov, R. M. Fernandes, G. Simutis, et al., Phys. Rev. B 97, 224510 (2018).
J. P. Sun, G. Z. Ye, P. Shahi, et al., Phys. Rev. Lett. 118, 147004 (2017).
T. J. Liu, J. Hu, B. Qian, et al., Nat. Mater. 9, 716 (2010).
A. K. Yadav, A. V. Sanchela, A. D. Thakur, C. V. Tomy, Solid St. Comm. 202, 8 (2015).
R. J. Sun, Y. Quan, S. F. Jin, et al., Phys. Rev. B 98, 214508 (2018).
A. Pourret, L. Malone, A. B. Antunes, et al., Phys. Rev. B 83, 020504(R) (2011).
D. Chareev, E. Osadchii, T. Kuzmicheva, et al., Cryst. Eng. Comm. 15, 1989 (2013).
S. Hartwig, N. Schäfera, M. Schulzeb, et al., Phys. B (Amsterdam, Neth.) 531, 102 (2018).
T. M. McQueen, Q. Huang, V. Ksenofontov, et al., Phys. Rev. B 79, 014522 (2009).
Y. Sun, T. Taen, T. Yamada, et al., Phys. Rev. B 89, 144512 (2014).
R. Khasanov, M. Bendele, A. Amato, et al., Phys. Rev. B 80, 140511 (2009).
Ji-Hoon Kang, Soon-Gil Jung, Sangyun Lee, et al., Supercond. Sci. Technol. 29, 035007 (2016).
M. A. Tanatar, A. E. Böhmer, E. I. Timmons, et al., Phys. Rev. Lett. 117, 127001 (2016).
Qisi Wang, Yao Shen, Bingying Pan, et al., Nat. Comm. 7, 12182 (2016).
M. S. Grbić, N. Barišić, A. Dulčić, et al., Phys. Rev. B 80, 094511 (2009).
I. Gimazov, Yu. Talanov, V. Sakhin, et al., Appl. Magn. Reson. 48, 861 (2017).
Huan Yang, Guanyu Chen, Xiyu Zhu, Jie Xing, and Hai-Hu Wen, Phys. Rev. B 96, 064501 (2017).
F. Nabeshima, K. Nagasawa, A. Maeda, and Y. Imai, Phys. Rev. B 97, 024504 (2018).
B. C. Sales, A. S. Sefat, M. A. McGuire, et al., Phys. Rev. B 79, 094521 (2009).
Funding
This work was supported by the Russian Academy of Sciences via the grant of Program 1.12 Fundamental Problems of High-Temperature Superconductivity.
The work of D.A.Ch. and A.N.V. was supported by the program 211 of the Russian Federation Government (agreements no. 02.A03.21.0006, 02.A03.21.0011) and the Russian Foundation for Basic Research (project no. 17-29-10007).
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Gimazov, I.I., Lyadov, N.M., Chareev, D.A. et al. Short-Lived Electron Excitations in FeTe1 –xSex as Revealed by Microwave Absorption. J. Exp. Theor. Phys. 129, 81–85 (2019). https://doi.org/10.1134/S1063776119060013
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DOI: https://doi.org/10.1134/S1063776119060013