Infrared spectroscopy study of ironbased superconductor Li0.8Fe0.2 ODFeSe

Lin Tong; Hu Die; Shi Li-Yu; Zhang Si-Jie; Liu Yan-Qi; Lv Jia-Lin; Dong Tao; Zhao Jun; Wang Nan-Lin

doi:10.7498/aps.67.20181401

Abstract

We perform an in-plane optical spectroscopy measurement on iron-based superconductor Li0.8Fe0.2ODFeSe single crystal. At room temperature, the low frequency optical conductivity shows an incoherent characteristic; the Drude component is absent. With temperature decreasing, the Drude component develops and narrows rapidly. A well-defined plasma edge is observed in reflectance spectrum at temperature below 100 K, indicating a dramatically reduced scattering rate. The spectral weight contributed from free carriers is even smaller than that of FeSe single crystal. A number of phonon modes are visible in the measured spectra. We also observe clear spectral change below 160 cm-1 at 10 K, associated with the formation of superconducting energy gap in the superconducting state. The energy scale of the superconducting gap is comparable to the value measured by angle-resolved photoemission spectroscopy technique. Like FeSe and other iron pnictides, a clear temperature-induced spectral weight transfer at high energy is observed for Li0.8Fe0.2ODFeSe, indicating the presence of strong correlation effect.

Keywords:

Authors and contacts

1.
International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, China;
2.
State Key Laboratory of Surface Physics, Department of Physics, Fudan University, Shanghai 200433, China

Corresponding author: Wang Nan-Lin, nlwang@pku.edu.cn

Funds: Project supported by the National Basic Research Program of China (Grant Nos. 2016YFA0300902, 2016YFA0300203, 2017YFA0302904, 2015CB921302), the National Natural Science Foundation of China (Grant Nos. 11327806, GZ1123), and the Innovation Program of Shanghai Municipal Education Commission, China (Grant No. 2017-01-07-00-07-E00018).

References

[1]	Rotter M, Tegel M, Johrendt D 2008 Phys. Rev. Lett. 101 107006
[2]	Kuroki K, Onari S, Arita R, Usui H, Tanaka Y, Kontani H, Aoki H 2008 Phys. Rev. Lett. 101 087004
[3]	Guo J G, Jin S F, Wang G, Wang S C, Zhu K X, Zhou T T, He M, Chen X L 2010 Phys. Rev. B 82 180520
[4]	Margadonna S, Takabayashi Y, Ohishi Y, Mizuguchi Y, Takano Y, Kagayama T, Nakagawa T, Takata M, Prassides K 2009 Phys. Rev. B 80 064506
[5]	Wang H P, Ye Z R, Zhang Y, Wang N L 2016 Sci. Bull. 61 1126
[6]	Liu D F, Zhang W H, Mou D X, He J F, Ou Y B, Wang Q Y, Li Z, Wang L L, Zhao L, He S L, Peng Y Y, Liu X, Chen C Y, Yu L, Liu G D, Dong X L, Zhang J, Chen C T, Xu Z Y, Hu J P, Chen X, Ma X C, Xue Q K, Zhou X J 2012 Nat. Commun. 3 931
[7]	He S L, He J F, Zhang W H, Zhao L, Liu D F, Liu X, Mou D X, Ou Y B, Wang Q Y, Li Z, Wang L L, Peng Y Y, Liu Y, Chen C Y, Yu L, Liu G D, Dong X L, Zhang J, Chen C T, Xu Z Y, Chen X, Ma X C, Xue Q K, Zhou X J 2013 Nat. Mater. 12 605
[8]	Tan S Y, Zhang Y, Xia M, Ye Z Y, Chen F, Xie X, Peng R, Xu D F, Fan Q, Xu H C, Jiang J, Zhang T, Lai X C, Xiang T, Hu J P, Xie B P, Feng D L 2013 Nat. Mater. 12 634
[9]	Zhang Z C, Wang Y H, Song Q, Liu C, Peng R, Moler K A, Feng D L, Wang Y Y 2015 Sci. Bull. 60 1301
[10]	Lu X F, Wang N Z, Wu H, Wu Y P, Zhao D, Zeng X Z, Luo X G, Wu T, Bao W, Zhang G H, Huang F Q, Huang Q Z, Chen X H 2015 Nat. Mater. 14 325
[11]	Dong X L, Jin K, Yuan D N, Zhou H X, Yuan J, Huang Y L, Hua W, Sun J L, Zheng P, Hu W, Mao Y Y, Ma M W, Zhang G M, Zhou F, Zhao Z X 2015 Phys. Rev. B 92 064515
[12]	Niu X H, Peng R, Xu H C, Yan Y J, Jiang J, Xu D F, Yu T L, Song Q, Huang Z C, Wang Y X, Xie B P, Lu X F, Wang N Z, Chen X H, Sun Z, Feng D L 2015 Phys. Rev. B 92 060504
[13]	Yan Y J, Zhang W H, Ren M Q, Liu X, Lu X F, Wang N Z, Niu X H, Fan Q, Miao J, Tao R, Xie B P, Chen X H, Zhang T, Feng D L 2016 Phys. Rev. B 94 134502
[14]	Zhao L, Liang A J, Yuan D N, Hu Y, Liu D F, Huang J W, He S L, Shen B, Xu Y, Liu X, Yu L, Liu G D, Zhou H X, Huang Y L, Dong X L, Zhou F, Liu K, Lu Z Y, Zhao Z X, Chen C T, Xu Z Y, Zhou X J 2016 Nat. Commun. 7 10608
[15]	Pan B Y, Shen Y, Hu D, Feng Y, Park J T, Christianson A D, Wang Q S, Hao Y Q, Wo H L, Yin Z P, Maier T A, Zhao J 2017 Nat. Commun. 8 123
[16]	Tanner D B 2015 Phys. Rev. B 91 035123
[17]	Li G, Hu W Z, Dong J, Li Z, Zheng P, Chen G F, Luo J L, Wang N L 2008 Phys. Rev. Lett. 101 107004
[18]	Yuan R H, Kong W D, Yan L, Ding H, Wang N L 2013 Phys. Rev. B 87 144517
[19]	Hu W Z, Dong J, Li G, Li Z, Zheng P, Chen G F, Luo J L, Wang N L 2008 Phys. Rev. Lett. 101 257005
[20]	Hu W Z, Li G, Zheng P, Chen G F, Luo J L, Wang N L 2009 Phys. Rev. B 80 100507
[21]	Wang N L, Hu W Z, Chen Z G, Yuan R H, Li G, Chen G F, Xiang T 2012 J. Phys.: Condens. Matter 24 294202
[22]	Benfatto L, Cappelluti E, Ortenzi L, Boeri L 2009 Nat. Phys. 5 647
[23]	Qazilbash M M, Hamlin J J, Baumbach R E, Zhang L J, Singh D J, Maple M B, Basov D N 2009 Nat. Phys. 5 647

Cited By

[1]	Rotter M, Tegel M, Johrendt D 2008 Phys. Rev. Lett. 101 107006
[2]	Kuroki K, Onari S, Arita R, Usui H, Tanaka Y, Kontani H, Aoki H 2008 Phys. Rev. Lett. 101 087004
[3]	Guo J G, Jin S F, Wang G, Wang S C, Zhu K X, Zhou T T, He M, Chen X L 2010 Phys. Rev. B 82 180520
[4]	Margadonna S, Takabayashi Y, Ohishi Y, Mizuguchi Y, Takano Y, Kagayama T, Nakagawa T, Takata M, Prassides K 2009 Phys. Rev. B 80 064506
[5]	Wang H P, Ye Z R, Zhang Y, Wang N L 2016 Sci. Bull. 61 1126
[6]	Liu D F, Zhang W H, Mou D X, He J F, Ou Y B, Wang Q Y, Li Z, Wang L L, Zhao L, He S L, Peng Y Y, Liu X, Chen C Y, Yu L, Liu G D, Dong X L, Zhang J, Chen C T, Xu Z Y, Hu J P, Chen X, Ma X C, Xue Q K, Zhou X J 2012 Nat. Commun. 3 931
[7]	He S L, He J F, Zhang W H, Zhao L, Liu D F, Liu X, Mou D X, Ou Y B, Wang Q Y, Li Z, Wang L L, Peng Y Y, Liu Y, Chen C Y, Yu L, Liu G D, Dong X L, Zhang J, Chen C T, Xu Z Y, Chen X, Ma X C, Xue Q K, Zhou X J 2013 Nat. Mater. 12 605
[8]	Tan S Y, Zhang Y, Xia M, Ye Z Y, Chen F, Xie X, Peng R, Xu D F, Fan Q, Xu H C, Jiang J, Zhang T, Lai X C, Xiang T, Hu J P, Xie B P, Feng D L 2013 Nat. Mater. 12 634
[9]	Zhang Z C, Wang Y H, Song Q, Liu C, Peng R, Moler K A, Feng D L, Wang Y Y 2015 Sci. Bull. 60 1301
[10]	Lu X F, Wang N Z, Wu H, Wu Y P, Zhao D, Zeng X Z, Luo X G, Wu T, Bao W, Zhang G H, Huang F Q, Huang Q Z, Chen X H 2015 Nat. Mater. 14 325
[11]	Dong X L, Jin K, Yuan D N, Zhou H X, Yuan J, Huang Y L, Hua W, Sun J L, Zheng P, Hu W, Mao Y Y, Ma M W, Zhang G M, Zhou F, Zhao Z X 2015 Phys. Rev. B 92 064515
[12]	Niu X H, Peng R, Xu H C, Yan Y J, Jiang J, Xu D F, Yu T L, Song Q, Huang Z C, Wang Y X, Xie B P, Lu X F, Wang N Z, Chen X H, Sun Z, Feng D L 2015 Phys. Rev. B 92 060504
[13]	Yan Y J, Zhang W H, Ren M Q, Liu X, Lu X F, Wang N Z, Niu X H, Fan Q, Miao J, Tao R, Xie B P, Chen X H, Zhang T, Feng D L 2016 Phys. Rev. B 94 134502
[14]	Zhao L, Liang A J, Yuan D N, Hu Y, Liu D F, Huang J W, He S L, Shen B, Xu Y, Liu X, Yu L, Liu G D, Zhou H X, Huang Y L, Dong X L, Zhou F, Liu K, Lu Z Y, Zhao Z X, Chen C T, Xu Z Y, Zhou X J 2016 Nat. Commun. 7 10608
[15]	Pan B Y, Shen Y, Hu D, Feng Y, Park J T, Christianson A D, Wang Q S, Hao Y Q, Wo H L, Yin Z P, Maier T A, Zhao J 2017 Nat. Commun. 8 123
[16]	Tanner D B 2015 Phys. Rev. B 91 035123
[17]	Li G, Hu W Z, Dong J, Li Z, Zheng P, Chen G F, Luo J L, Wang N L 2008 Phys. Rev. Lett. 101 107004
[18]	Yuan R H, Kong W D, Yan L, Ding H, Wang N L 2013 Phys. Rev. B 87 144517
[19]	Hu W Z, Dong J, Li G, Li Z, Zheng P, Chen G F, Luo J L, Wang N L 2008 Phys. Rev. Lett. 101 257005
[20]	Hu W Z, Li G, Zheng P, Chen G F, Luo J L, Wang N L 2009 Phys. Rev. B 80 100507
[21]	Wang N L, Hu W Z, Chen Z G, Yuan R H, Li G, Chen G F, Xiang T 2012 J. Phys.: Condens. Matter 24 294202
[22]	Benfatto L, Cappelluti E, Ortenzi L, Boeri L 2009 Nat. Phys. 5 647
[23]	Qazilbash M M, Hamlin J J, Baumbach R E, Zhang L J, Singh D J, Maple M B, Basov D N 2009 Nat. Phys. 5 647

[1]	Li Geng, Ding Hong, Wang Zi-Qiang, Gao Hong-Jun. Majorana zero mode and its lattice construction in iron-based superconductors. Acta Physica Sinica, 2024, 73(3): 030302. doi: 10.7498/aps.73.20232022
[2]	Zhong Guo-Hua, Lin Hai-Qing. Aromatic superconductors: Electron-phonon coupling and electronic correlations. Acta Physica Sinica, 2023, 72(23): 237403. doi: 10.7498/aps.72.20231751
[3]	Li Miao-Cong, Tao Qian, Xu Zhu-An. The transport properties of iron-based superconductors. Acta Physica Sinica, 2021, 70(1): 017404. doi: 10.7498/aps.70.20201836
[4]	Wu Chen-Chen, Guo Xiang-Dong, Hu Hai, Yang Xiao-Xia, Dai Qing. Graphene plasmon enhanced infrared spectroscopy. Acta Physica Sinica, 2019, 68(14): 148103. doi: 10.7498/aps.68.20190903
[5]	Xu Bing, Qiu Zi-Yang, Yang Run, Dai Yao-Min, Qiu Xiang-Gang. Optical properties of topological semimetals. Acta Physica Sinica, 2019, 68(22): 227804. doi: 10.7498/aps.68.20191510
[6]	Wang Zhi-Cheng, Cao Guang-Han. Self-doped iron-based superconductors with intergrowth structures. Acta Physica Sinica, 2018, 67(20): 207406. doi: 10.7498/aps.67.20181355
[7]	Gu Qiang-Qiang, Wan Si-Yuan, Yang Huan, Wen Hai-Hu. Studies of scanning tunneling spectroscopy on iron-based superconductors. Acta Physica Sinica, 2018, 67(20): 207401. doi: 10.7498/aps.67.20181818
[8]	Wang Nai-Zhou, Shi Meng-Zhu, Lei Bin, Chen Xian-Hui. Exploration and physical investigation of FeSe-based superconductors. Acta Physica Sinica, 2018, 67(20): 207408. doi: 10.7498/aps.67.20181496
[9]	Gong Dong-Liang, Luo Hui-Qian. Antiferromagnetic order and spin dynamics in iron-based superconductors. Acta Physica Sinica, 2018, 67(20): 207407. doi: 10.7498/aps.67.20181543
[10]	Guo Jing, Wu Qi, Sun Li-Ling. Pressure-induced phenomena and physics in iron-based superconductors. Acta Physica Sinica, 2018, 67(20): 207409. doi: 10.7498/aps.67.20181651
[11]	Wang An-Jing, Fang Yong-Hua, Li Da-Cheng, Cui Fang-Xiao, Wu Jun, Liu Jia-Xiang, Li Yang-Yu, Zhao Yan-Dong. Simulation of pollutant-gas-cloud infrared spectra under plane-array detecting. Acta Physica Sinica, 2017, 66(11): 114203. doi: 10.7498/aps.66.114203
[12]	Du Zeng-Yi, Fang De-Long, Wang Zhen-Yu, Du Guan, Yang Xiong, Yang Huan, Gu Gen-Da, Wen Hai-Hu. Investigation of scanning tunneling spectra on iron-based superconductor FeSe0.5Te0.5. Acta Physica Sinica, 2015, 64(9): 097401. doi: 10.7498/aps.64.097401
[13]	Li Shi-Chao, Gan Yuan, Wang Jing-Hui, Ran Ke-Jing, Wen Jin-Sheng. Magnetic neutron scattering studies on the Fe-based superconductor system Fe1+yTe1-xSex. Acta Physica Sinica, 2015, 64(9): 097503. doi: 10.7498/aps.64.097503
[14]	Li Zheng, Zhou Rui, Zheng Guo-Qing. Quantum criticalities in carrier-doped iron-based superconductors. Acta Physica Sinica, 2015, 64(21): 217404. doi: 10.7498/aps.64.217404
[15]	Yu Rong. Electron correlations and orbital selectivities in multiorbital models for iron-based superconductors. Acta Physica Sinica, 2015, 64(21): 217102. doi: 10.7498/aps.64.217102
[16]	Sun Jie, Nie Qiu-Hua, Wang Guo-Xiang, Wang Xun-Si, Dai Shi-Xun, Zhang Wei, Song Bao-An, Shen Xiang, Xu Tie-Feng. Effect of PbI2 on optical properties of Te-based far infrared transmitting chalcogenide glasses. Acta Physica Sinica, 2011, 60(11): 114212. doi: 10.7498/aps.60.114212
[17]	Nie Qiu-Hua, Wang Guo-Xiang, Wang Xun-Si, Xu Tie-Feng, Dai Shi-Xun, Shen Xiang. Effect of Ga on optical properties of novel Te-based far infrared transmitting chalcogenide glasses. Acta Physica Sinica, 2010, 59(11): 7949-7955. doi: 10.7498/aps.59.7949
[18]	Liu Su, Li Bin, Wang Wei, Wang Jun, Liu Mei. Electronic structure and magnetism of SrFeAsF and Co-doped superconductor SrFe0.875Co0.125AsF. Acta Physica Sinica, 2010, 59(6): 4245-4252. doi: 10.7498/aps.59.4245
[19]	Wang Wei, Sun Jia-Fa, Liu Mei, Liu Su. First-principles calculations on the electronic band structure of β-Pyrochlore superconductors AOs2O6 (A=K,Rb,Cs). Acta Physica Sinica, 2009, 58(8): 5632-5639. doi: 10.7498/aps.58.5632
[20]	LING ZHI-HUA. STUDY OF POLARIZED FT-IR FOR ANTIFERROELECTRIC LIQUID CRYSTAL TFMHxPOCBC-D2 IN A HOMEOTROPICALLY ALIGNED CELL. Acta Physica Sinica, 2001, 50(2): 227-232. doi: 10.7498/aps.50.227

Catalog

Vol. 67, Issue 20 - 2018-10-20

Metrics

Abstract views: 6610
PDF Downloads: 248
Cited By: 0

姓名
邮箱
手机号码
标题
留言内容
验证码

Search

Article

留言板