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Title: Reversible structure manipulation by tuning carrier concentration in metastable Cu 2S

Harnessing a material’s functionality in applications and for fundamental studies often requires direct manipulation of its crystal symmetry. Here, we manipulate the crystal structure of Cu 2S nanoparticles in a controlled and reversible fashion via variation of the electron dose rate, observed by transmission electron microscopy. Our control method is in contrast to conventional chemical doping, which is irreversible and often introduces unwanted lattice distortions. Our study sheds light on the much-debated question of whether a change in electronic structure can facilitate a change of crystal symmetry, or whether vice versa is always the case. Finally, we show that a minimal perturbation to the electronic degree of freedom can drive the structural phase transition in Cu 2S, hence resolving this dilemma.
Authors:
 [1] ;  [2] ;  [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [1] ;  [1] ;  [6] ;  [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics & Materials Science Dept.
  2. Univ. of Arkansas, Fayetteville, AR (United States). Dept. of Chemistry and Biochemistry
  3. Xiamen Univ., Xiamen (China). Dept. of Physics, and Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices; Xiamen Univ. Malaysia, Selangor (Malaysia). High Performance Computing Center
  4. American Physical Society, Ridge, NY (United States)
  5. Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials (CFN)
  6. Princeton Univ., NJ (United States). Dept. of Chemistry
Publication Date:
Report Number(s):
BNL-114478-2017-JA
Journal ID: ISSN 0027-8424; R&D Project: MA015MACA; KC0201010
Grant/Contract Number:
SC0012704; OIA-1457888
Type:
Published Article
Journal Name:
Proceedings of the National Academy of Sciences of the United States of America
Additional Journal Information:
Journal Volume: 114; Journal Issue: 37; Journal ID: ISSN 0027-8424
Publisher:
National Academy of Sciences, Washington, DC (United States)
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
OSTI Identifier:
1377926
Alternate Identifier(s):
OSTI ID: 1412670

Tao, Jing, Chen, Jingyi, Li, Jun, Mathurin, Leanne, Zheng, Jin-Cheng, Li, Yan, Lu, Deyu, Cao, Yue, Wu, Lijun, Cava, Robert Joseph, and Zhu, Yimei. Reversible structure manipulation by tuning carrier concentration in metastable Cu2S. United States: N. p., Web. doi:10.1073/pnas.1709163114.
Tao, Jing, Chen, Jingyi, Li, Jun, Mathurin, Leanne, Zheng, Jin-Cheng, Li, Yan, Lu, Deyu, Cao, Yue, Wu, Lijun, Cava, Robert Joseph, & Zhu, Yimei. Reversible structure manipulation by tuning carrier concentration in metastable Cu2S. United States. doi:10.1073/pnas.1709163114.
Tao, Jing, Chen, Jingyi, Li, Jun, Mathurin, Leanne, Zheng, Jin-Cheng, Li, Yan, Lu, Deyu, Cao, Yue, Wu, Lijun, Cava, Robert Joseph, and Zhu, Yimei. 2017. "Reversible structure manipulation by tuning carrier concentration in metastable Cu2S". United States. doi:10.1073/pnas.1709163114.
@article{osti_1377926,
title = {Reversible structure manipulation by tuning carrier concentration in metastable Cu2S},
author = {Tao, Jing and Chen, Jingyi and Li, Jun and Mathurin, Leanne and Zheng, Jin-Cheng and Li, Yan and Lu, Deyu and Cao, Yue and Wu, Lijun and Cava, Robert Joseph and Zhu, Yimei},
abstractNote = {Harnessing a material’s functionality in applications and for fundamental studies often requires direct manipulation of its crystal symmetry. Here, we manipulate the crystal structure of Cu2S nanoparticles in a controlled and reversible fashion via variation of the electron dose rate, observed by transmission electron microscopy. Our control method is in contrast to conventional chemical doping, which is irreversible and often introduces unwanted lattice distortions. Our study sheds light on the much-debated question of whether a change in electronic structure can facilitate a change of crystal symmetry, or whether vice versa is always the case. Finally, we show that a minimal perturbation to the electronic degree of freedom can drive the structural phase transition in Cu2S, hence resolving this dilemma.},
doi = {10.1073/pnas.1709163114},
journal = {Proceedings of the National Academy of Sciences of the United States of America},
number = 37,
volume = 114,
place = {United States},
year = {2017},
month = {8}
}