| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Observation of Temperature Induced Plasma Frequency Shift in an Extremely Large Magnetoresistance Compound LaSb |
| Wen-Jing Ban1, Wen-Ting Guo2†, Jian-Lin Luo1,3, Nan-Lin Wang2,3** |
1Institute of Physics, Chinese Academy of Sciences, Beijing 100190
2International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871
3Collaborative Innovation Center of Quantum Matter, Beijing 100871
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| Cite this article: |
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Wen-Jing Ban, Wen-Ting Guo, Jian-Lin Luo et al 2017 Chin. Phys. Lett. 34 077804 |
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Abstract We report an optical spectroscopy study on LaSb, a compound recently identified to exhibit extremely large magnetoresistance. Our optical measurement indicates that the material has a low carrier density. More interestingly, the study reveals that the plasma frequency increases with decreasing temperature. This phenomenon suggests either an increase of the conducting carrier density or/and a decrease of the effective mass of carriers with decreasing temperature. We attribute it primarily to the latter effect. Two possible scenarios on its physical origin are examined and discussed. The study offers new insight into the electronic structure of this compound.
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Received: 19 April 2017
Published: 23 June 2017
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| PACS: |
78.20.-e
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(Optical properties of bulk materials and thin films)
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| Fund: Supported by the National Natural Science Foundation of China under Grant Nos 11327806 and GZ1123, and the National Key Research and Development Program of China under Grant No 2016YFA0300902. |
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| [1] | Ali M N, Xiong J, Flynm S, Tao J, Gibson Q D, Schoop L M, Liang T, Haldolaarachchige N, Hirschberger M, Ong N P and Cava R J 2014 Nature 514 205 | | [2] | Shekhar C, Nayak A K, Sun Y, Schmidt M, Nicklas M, Leermakers I, Zeitler U, Skourski Y, Wosnitza J, Liu Z, Chen Y, Schnelle W, Borrmann H, Grin Y, Felser C and Yan B H 2015 Nat. Phys. 11 645 | | [3] | Feng J, Pang Y, Wu D, Wang Z, Weng H, Li J, Dai X, Fang Z, Shi Y and Lu L 2015 Phys. Rev. B 92 081306 | | [4] | Huang X C, Zhao L X, Long Y J, Wang P P, Chen D, Yang Z H, Liang H, Xue M Q, Weng H M, Fang Z, Dai X and Chen G F 2015 Phys. Rev. X 5 031023 | | [5] | Wang K, Graf D, Li L, Wang L and Petrovic C 2015 Sci. Rep. 4 7328 | | [6] | Shen B, Deng X, Kotliar G and Ni N 2016 Phys. Rev. B 93 195119 | | [7] | Wu D, Liao J, Yi W, Wang X, Li P, Weng H, Shi Y, Li Y, Luo J, Dai X and Fang Z 2016 Appl. Phys. Lett. 108 042105 | | [8] | Xu C, Chen J, Zhi G X, Li Y, Dai J and Cao C 2016 Phys. Rev. B 93 195106 | | [9] | Wang Y Y, Yu Q H, Guo P J and Xia T L 2016 Phys. Rev. B 94 041103 | | [10] | Tafti F F, Gibson Q D, Kushwaha S K, Haldolaarachchige N and Cava R J 2015 Nat. Phys. 12 272 | | [11] | Sun S, Wang Q, Guo P J, Liu K and Lei H 2016 New J. Phys. 18 082002 | | [12] | Kumar N, Shekhar C, Wu S C, Leermakers I, Young O, Zeitler U, Yan B and Felser C 2016 Phys. Rev. B 93 241106 | | [13] | Pletikosic I, Ali M N, Fedorov A V, Cava R J and Valla T 2014 Phys. Rev. Lett. 113 216601 | | [14] | Jiang J, Tang F, Pan X C, Liu H M, Niu X H, Wang Y X, Xu D F, Yang H F, Xie B P, Song F Q, Dudin P and Kim T K 2015 Phys. Rev. Lett. 115 166601 | | [15] | Zhao Y, Liu H, Yan J, An W, Liu J, Zhang X, Wang H, Liu Y, Jiang H, Li Q, Wang Y, Li X Z, Mandrus D, Xie X C, Pan M and Wang J 2015 Phys. Rev. B 92 041104 | | [16] | Abrikosov A A 1998 Phys. Rev. B 58 2788 | | [17] | Guo P J, Yang H C, Zhang B J, Liu K and Lu Z Y 2016 Phys. Rev. B 93 235142 | | [18] | Niu X H, Xu D F, Bai Y H, Song Q, Shen X P, Xie B P, Sun Z, Huang Y B, Peets D C and Feng D L 2016 Phys. Rev. B 94 165163 | | [19] | Zeng L K, Lou R, Wu D S, Xu Q N, Guo P J, Kong L Y, Zhong Y G, Ma J Z, Fu B B, Richard P, Wang P, Liu G T, Lu L, Huang Y B, Fang C, Sun S S, Wang Q, Wang L, Shi Y G, Weng H M, Lei H C, Liu K, Wang S C, Qian T, Luo J L and Ding H 2016 Phys. Rev. Lett. 117 127204 | | [20] | Homes C C, Reedyk M, Cradles D A and Timusk T 1993 Appl. Opt. 32 2976 | | [21] | Li G, Hu W Z, Qian D, Hsieh D, Hasan M Z, Morosan E, Cava R J and Wang N L 2007 Phys. Rev. Lett. 99 027404 | | [22] | Caimi G, Perucchi A, Degiorgi L, Ott H R, Pereira V M, Neto A H C, Bianchi A D and Fisk Z 2006 Phys. Rev. Lett. 96 016403 | | [23] | Li G, Hu W Z, Dong J, Qian D, Hsieh D, Hasan M Z, Morosan E, Cava R J and Wang N L 2007 Phys. Rev. Lett. 99 167002 | | [24] | Dordevic S V, Wolf M S, Stojilovic N, Lei H and Petrovic C 2013 J. Phys.: Condens. Matter 25 075501 | | [25] | Dong T, Yuan R H, Shi Y G and Wang N L 2013 Chin. Phys. Lett. 30 127801 | | [26] | Hu W Z, Dong J, Li G, Li Z, Zheng P, Chen G F, Luo J L and Wang N L 2008 Phys. Rev. Lett. 101 257005 | | [27] | Halperin B I and Rice T M 1968 Rev. Mod. Phys. 40 755 | | [28] | Degiorgi L 1999 Rev. Mod. Phys. 71 687 | | [29] | Wang N L, McGuire J J, Timusk T, Jin R, He J and Mandrus D 2002 Phys. Rev. B 66 014534 | | [30] | Park H J, Sandilands L J, You J S, Ji H S, Sohn C H, Han J W, Moon S J, Kim K W, Shim J H, Kim J S and Noh T W 2016 Phys. Rev. B 94 205122 |
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