Please wait a minute...
Chin. Phys. B, 2020, Vol. 29(5): 058101    DOI: 10.1088/1674-1056/ab7d9e
INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY Prev   Next  

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
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.
Keywords:  ultra-fast laser      CaTiO3 QDs      metallic transformation  
Received:  15 January 2020      Revised:  18 February 2020      Accepted manuscript online: 
PACS:  81.07.Ta (Quantum dots)  
  79.20.Ds (Laser-beam impact phenomena)  
  73.61.-r (Electrical properties of specific thin films)  
Fund: 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).
Corresponding Authors:  Hong Zhang     E-mail:  hongzhang@scu.edu.cn

Cite this article: 

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 2020 Chin. Phys. B 29 058101

[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
[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
[3] Wang F, Grinberg I, Jiang L, Young S M, Davies P K and Rappe A M 2015 Ferroelectrics 483 1
[4] Young S M and Rappe A M 2012 Phys. Rev. Lett. 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
[6] Maeda K, Teramura K, Lu D, Takata T, Saito N, Inoue Y and Domen K 2006 Nature 440 295
[7] Lee M M, Teuscher J, Miyasaka T, Murakami T N and Snaith H J 2012 Science 338 643
[8] Kennedy C L, Hill A H, Massaro E S and Grumstrup E M 2017 ACS Energy Lett. 2 1501
[9] Kabir I and Mahmood S 2019 Chin. Phys. B 28 128801
[10] Zhang C, Sun D, Sheng C, Zhai Y, Mielczarek K, Zakhidov A and Vardeny Z 2015 Nat. Phys. 11 427
[11] Leppert L, Reyes-Lillo S E and Neaton J B 2016 J. Phys. Chem. Lett. 7 3683
[12] Miyano K, Tanaka T, Tomioka Y and Tokura Y 1997 Phys. Rev. Lett. 78 4257
[13] Zhang Q, Su R, Du W, Liu X, Zhao L, Ha S T and Xiong Q 2017 Small Methods 1 1700163
[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
[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
[16] Kuzyk A, Pettersson M, Toppari J J, Hakala T K, Tikkanen H, Kunttu H and Törmä P 2007 Opt. Express 15 9908
[17] Li Y J, Lv Y, Zou C L, Zhang W, Yao J and Zhao Y S 2016 J. Am. Chem. Soc. 138 2122
[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
[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
[20] Sun S, Yuan D, Xu Y, Wang A and Deng Z 2016 ACS Nano 10 3648
[21] Liu T, Zhang H and Cheng X 2019 Opt. Express 27 16586
[22] Wang Y, Li X, Song J, Xiao L, Zeng H and Sun H 2015 Adv. Mater. 27 7101
[23] Fonoberov V A and Balandin A A 2003 J. Appl. Phys. 94 7178
[24] Kay H and Bailey P 1957 Acta Crystallogr. 10 219
[25] Lemanov V, Sotnikov A, Smirnova E, Weihnacht M and Kunze R 1999 Solid State Commun. 110 611
[26] Cockayne E and Burton B P 2000 Phys. Rev. B 62 3735
[27] Marques M A, Castro A, Bertsch G F and Rubio A 2003 Comput. Phys. Commun. 151 60
[28] Hartwigsen C, Goedecker S and Hutter J 1998 Phys. Rev. B 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
[33] Goul R, Das S, Liu Q, Xin M, Lu R, Hui R and Wu J Z 2017 Carbon 111 386
[34] Knorr I, Christou K, Meinertz J, Selle A, Ihlemann J and Marowsky G 2008 COMSOL Conference pp. 1-7
[1] Linear and nonlinear optical response of g-C3N4-based quantum dots
Jing-Zhi Zhang(张竞之) and Hong Zhang(张红). Chin. Phys. B, 2021, 30(7): 077802.
[2] Optical parametric chirped pulse amplification based on photonic crystal fibre
Wang He-Lin(王河林)a), Yang Ai-Jun(杨爱军), Leng Yu-Xin(冷雨欣), Wang Cheng(王乘), Xu Zhi-Zhan(徐至展), and Hou Lan-Tian(候蓝田). Chin. Phys. B, 2011, 20(8): 084208.
No Suggested Reading articles found!