Insulator-metal transition in CaTiO3 quantum dots induced by ultrafast laser pulses

doi:10.1088/1674-1056/ab7d9e

中国物理B ›› 2020, Vol. 29 ›› Issue (5): 58101-058101.doi: 10.1088/1674-1056/ab7d9e

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇下一篇

Insulator-metal transition in CaTiO₃ quantum dots induced by ultrafast laser pulses

Tong Liu(刘彤), Hong Zhang(张红), Xin-Lu Cheng(程新路)

1 College of Physics, Sichuan University, Chengdu 610065, China;
2 Key Laboratory of High Energy Density Physics and Technology of Ministry of Education, Sichuan University, Chengdu 610065, China

收稿日期:2020-01-15 修回日期:2020-02-18 出版日期:2020-05-05 发布日期:2020-05-05
通讯作者: Hong Zhang E-mail:hongzhang@scu.edu.cn
基金资助:
Project supported by the National Key Research and Development Program of China (Grant No. 2017YFA0303600) and the National Natural Science Foundation of China (Grant Nos. 11974253 and 11774248).

Insulator-metal transition in CaTiO₃ quantum dots induced by ultrafast laser pulses

Tong Liu(刘彤)¹, Hong Zhang(张红)^1,2, Xin-Lu Cheng(程新路)²

1 College of Physics, Sichuan University, Chengdu 610065, China;
2 Key Laboratory of High Energy Density Physics and Technology of Ministry of Education, Sichuan University, Chengdu 610065, China

Received:2020-01-15 Revised:2020-02-18 Online:2020-05-05 Published:2020-05-05
Contact: Hong Zhang E-mail:hongzhang@scu.edu.cn
Supported by:
Project supported by the National Key Research and Development Program of China (Grant No. 2017YFA0303600) and the National Natural Science Foundation of China (Grant Nos. 11974253 and 11774248).

摘要/Abstract

摘要： According to time-dependent density functional theory (TDDFT), we study the interactions between ultra-fast laser pulses and two kinds of calcium titanate quantum dots (PCTO-QDs and MCTO-QDs). Under the action of localized field effect, ultrafast laser can induce quantum dots to make the transition from insulator to metal. The PCTO-QDs are ultimately metallic, while the MCTO-QDs are still insulator after experiencing metal state. This is bacause the stability of the unsaturated atoms in the outermost layer of PCTO-QDs is weak and the geometric configuration of MCTO-QDs as a potential well will also reduce the damage of laser. Moreover, laser waveforms approaching to the intrinsic frequency of quantum dots tend to cause the highest electron levels to cross the Fermi surface. In this paper, it is reported that the insulating quantum dots can be transformed into metal by adjusting the intensity and frequency of laser. The importance of local morphology is emphasized by comparing two kinds of CTO-QDs. More importantly, it is an important step to identify the potential properties of perovskite materials.

关键词: ultra-fast laser, CaTiO₃ QDs, metallic transformation

Abstract: According to time-dependent density functional theory (TDDFT), we study the interactions between ultra-fast laser pulses and two kinds of calcium titanate quantum dots (PCTO-QDs and MCTO-QDs). Under the action of localized field effect, ultrafast laser can induce quantum dots to make the transition from insulator to metal. The PCTO-QDs are ultimately metallic, while the MCTO-QDs are still insulator after experiencing metal state. This is bacause the stability of the unsaturated atoms in the outermost layer of PCTO-QDs is weak and the geometric configuration of MCTO-QDs as a potential well will also reduce the damage of laser. Moreover, laser waveforms approaching to the intrinsic frequency of quantum dots tend to cause the highest electron levels to cross the Fermi surface. In this paper, it is reported that the insulating quantum dots can be transformed into metal by adjusting the intensity and frequency of laser. The importance of local morphology is emphasized by comparing two kinds of CTO-QDs. More importantly, it is an important step to identify the potential properties of perovskite materials.

Key words: ultra-fast laser, CaTiO₃ QDs, metallic transformation

中图分类号: (Quantum dots)

81.07.Ta

79.20.Ds (Laser-beam impact phenomena) 73.61.-r (Electrical properties of specific thin films)

刘彤, 张红, 程新路. Insulator-metal transition in CaTiO₃ quantum dots induced by ultrafast laser pulses[J]. 中国物理B, 2020, 29(5): 58101-058101.

Tong Liu(刘彤), Hong Zhang(张红), Xin-Lu Cheng(程新路). Insulator-metal transition in CaTiO₃ quantum dots induced by ultrafast laser pulses[J]. Chin. Phys. B, 2020, 29(5): 58101-058101.

参考文献 34

[1]	Grinberg I, West D V, Torres M, Gou G, Stein D M, Wu L, Chen G, Gallo E M, Akbashev A R and Davies P K 2013 Nature 503 509 doi: 10.1038/nature12622
[2]	Jeng J Y, Chiang Y F, Lee M H, Peng S R, Guo T F, Chen P and Wen T C 2013 Adv. Mater. 25 3727 doi: 10.1002/adma.201301327
[3]	Wang F, Grinberg I, Jiang L, Young S M, Davies P K and Rappe A M 2015 Ferroelectrics 483 1 doi: 10.1080/00150193.2015.1058096
[4]	Young S M and Rappe A M 2012 Phys. Rev. Lett. 109 116601 doi: 10.1103/PhysRevLett.109.116601
[5]	Veldhuis S A, Boix P P, Yantara N, Li M, Sum T C, Mathews N and Mhaisalkar S G 2016 Adv. Mater. 28 6804 doi: 10.1002/adma.201600669
[6]	Maeda K, Teramura K, Lu D, Takata T, Saito N, Inoue Y and Domen K 2006 Nature 440 295 doi: 10.1038/440295a
[7]	Lee M M, Teuscher J, Miyasaka T, Murakami T N and Snaith H J 2012 Science 338 643 doi: 10.1126/science.1228604
[8]	Kennedy C L, Hill A H, Massaro E S and Grumstrup E M 2017 ACS Energy Lett. 2 1501 doi: 10.1021/acsenergylett.7b00257
[9]	Kabir I and Mahmood S 2019 Chin. Phys. B 28 128801 doi: 10.1088/1674-1056/ab520f
[10]	Zhang C, Sun D, Sheng C, Zhai Y, Mielczarek K, Zakhidov A and Vardeny Z 2015 Nat. Phys. 11 427 doi: 10.1038/nphys3277
[11]	Leppert L, Reyes-Lillo S E and Neaton J B 2016 J. Phys. Chem. Lett. 7 3683 doi: 10.1021/acs.jpclett.6b01794
[12]	Miyano K, Tanaka T, Tomioka Y and Tokura Y 1997 Phys. Rev. Lett. 78 4257 doi: 10.1103/PhysRevLett.78.4257
[13]	Zhang Q, Su R, Du W, Liu X, Zhao L, Ha S T and Xiong Q 2017 Small Methods 1 1700163 doi: 10.1002/smtd.201700163
[14]	Liu M, Hwang H Y, Tao H, Strikwerda A C, Fan K, Keiser G R, Sternbach A J, West K G, Kittiwatanakul S and Lu J 2012 Nature 487 345 doi: 10.1038/nature11231
[15]	Liu M, Pardo B, Zhang J, Qazilbash M, Yun S J, Fei Z, Shin J H, Kim H T, Basov D and Averitt R 2011 Phys. Rev. Lett. 107 066403 doi: 10.1103/PhysRevLett.107.066403
[16]	Kuzyk A, Pettersson M, Toppari J J, Hakala T K, Tikkanen H, Kunttu H and Törmä P 2007 Opt. Express 15 9908 doi: 10.1364/OE.15.009908
[17]	Li Y J, Lv Y, Zou C L, Zhang W, Yao J and Zhao Y S 2016 J. Am. Chem. Soc. 138 2122 doi: 10.1021/jacs.5b12755
[18]	Hsu H L, Juang T Y, Chen C P, Hsieh C M, Yang C C, Huang C L and Jeng R J 2015 Sol. Energy Mater. Sol. Cells 140 224 doi: 10.1016/j.solmat.2015.04.021
[19]	Shamsi J, Dang Z, Bianchini P, Canale C, Di Stasio F, Brescia R, Prato M and Manna L 2016 J. Am. Chem. Soc. 138 7240 doi: 10.1021/jacs.6b03166
[20]	Sun S, Yuan D, Xu Y, Wang A and Deng Z 2016 ACS Nano 10 3648 doi: 10.1021/acsnano.5b08193
[21]	Liu T, Zhang H and Cheng X 2019 Opt. Express 27 16586 doi: 10.1364/OE.27.016586
[22]	Wang Y, Li X, Song J, Xiao L, Zeng H and Sun H 2015 Adv. Mater. 27 7101 doi: 10.1002/adma.201503573
[23]	Fonoberov V A and Balandin A A 2003 J. Appl. Phys. 94 7178 doi: 10.1063/1.1623330
[24]	Kay H and Bailey P 1957 Acta Crystallogr. 10 219 doi: 10.1107/S0365110X57000675
[25]	Lemanov V, Sotnikov A, Smirnova E, Weihnacht M and Kunze R 1999 Solid State Commun. 110 611 doi: 10.1016/S0038-1098(99)00153-2
[26]	Cockayne E and Burton B P 2000 Phys. Rev. B 62 3735 doi: 10.1103/PhysRevB.62.3735
[27]	Marques M A, Castro A, Bertsch G F and Rubio A 2003 Comput. Phys. Commun. 151 60 doi: 10.1016/S0010-4655(02)00686-0
[28]	Hartwigsen C, Goedecker S and Hutter J 1998 Phys. Rev. B 58 3641 doi: 10.1103/PhysRevB.58.3641
[29]	Delin A, Fast L, Johansson B, Eriksson O and Wills J 1998 Phys. Rev. B 58 4345
[30]	Šetrajčić J P, Armaković S, Šetrajčić I J and Džambas L D 2014 Mod. Phys. Lett. B 28 1450023
[31]	Anisimov S I, Kapeliovich B L, Perelman T L 1974 Electron Emission from Metal Surfaces Exposed to Ultra-Short Laser Pulses [J]. Zhurnal Eksperimental'noi i Teroreticheskoi Fiziki 66 776
[32]	Lin J H, Zhang H, Zhang B F, Zhao J, Miyamoto Y and Cheng X 2018 J. Phys. Chem. C 122 19992 doi: 10.1021/acs.jpcc.8b05616
[33]	Goul R, Das S, Liu Q, Xin M, Lu R, Hui R and Wu J Z 2017 Carbon 111 386 doi: 10.1016/j.carbon.2016.10.019
[34]	Knorr I, Christou K, Meinertz J, Selle A, Ihlemann J and Marowsky G 2008 COMSOL Conference pp. 1-7

Insulator-metal transition in CaTiO₃ quantum dots induced by ultrafast laser pulses

Insulator-metal transition in CaTiO₃ quantum dots induced by ultrafast laser pulses

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