Probing the pathway of an ultrafast structural phase transition to illuminate the transition mechanism in Cu2S

doi:10.1063/1.5032132

This content will become publicly available on July 24, 2019

Title: Probing the pathway of an ultrafast structural phase transition to illuminate the transition mechanism in Cu ₂S

Abstract

Disentangling the primary order parameter from secondary order parameters in phase transitions is critical to the interpretation of transition mechanisms in strongly correlated systems and quantum materials. Here in this work, we present a study of structural phase transition pathways in superionic Cu ₂S nanocrystals that exhibit intriguing properties. Utilizing ultrafast electron diffraction techniques sensitive to both the momentum-space and the time-domain, we distinguish the dynamics of crystal symmetry breaking and lattice expansion in this system. We are able to follow the transient states along the transition pathway, and so observe the dynamics of both the primary and secondary order parameters. Based on these observations, we argue that the mechanism of structural phase transition in Cu ₂S is dominated by the electron-phonon coupling. Lastly, this mechanism advances the understanding from previous results, where the focus was solely on dynamic observations of the lattice expansion.

Authors:

^[1]; Sun, Kai ^[2]; Li, Jun ^[1]; Meng, Qingping ^[1]; Fu, Xuewen ^[1];

^[1];

^[3]; Li, Yan ^[4]; Babzien, Marcus ^[5]; Fedurin, Mikhail ^[5]; Swinson, Christina ^[5]; Malone, Robert ^[5]; Palmer, Mark ^[5]; Mathurin, Leanne ^[6]; Manso, Ryan ^[6];

^[6]; Konik, Robert M. ^[1]; Cava, Robert J. ^[7]; Zhu, Yimei ^[1]; Tao, Jing ^[1]

Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Department
Univ. of Michigan, Ann Arbor, MI (United States). Department of Physics
Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials
American Physical Society, Ridge, NY (United States)
Brookhaven National Lab. (BNL), Upton, NY (United States). Accelerator Test Facility
Univ. of Arkansas, Fayetteville, AR (United States). Department of Chemistry and Biochemistry
Princeton Univ., NJ (United States). Department of Chemistry

Publication Date:: 2018-07-24

Research Org.:: Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)

OSTI Identifier:: 1473656

Alternate Identifier(s):: OSTI ID: 1461568

Report Number(s):: BNL-209066-2018-JAAM
Journal ID: ISSN 0003-6951

Grant/Contract Number:: SC0012704; FG02-98ER45706

Resource Type:: Accepted Manuscript

Journal Name:: Applied Physics Letters

Additional Journal Information:: Journal Volume: 113; Journal Issue: 4; Journal ID: ISSN 0003-6951

Publisher:: American Institute of Physics (AIP)

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats


                    Li, Junjie, Sun, Kai, Li, Jun, Meng, Qingping, Fu, Xuewen, Yin, Wei-Guo, Lu, Deyu, Li, Yan, Babzien, Marcus, Fedurin, Mikhail, Swinson, Christina, Malone, Robert, Palmer, Mark, Mathurin, Leanne, Manso, Ryan, Chen, Jingyi, Konik, Robert M., Cava, Robert J., Zhu, Yimei, and Tao, Jing. Probing the pathway of an ultrafast structural phase transition to illuminate the transition mechanism in Cu2S.  United States: N. p., 2018. 
        Web.  doi:10.1063/1.5032132.

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                    Li, Junjie, Sun, Kai, Li, Jun, Meng, Qingping, Fu, Xuewen, Yin, Wei-Guo, Lu, Deyu, Li, Yan, Babzien, Marcus, Fedurin, Mikhail, Swinson, Christina, Malone, Robert, Palmer, Mark, Mathurin, Leanne, Manso, Ryan, Chen, Jingyi, Konik, Robert M., Cava, Robert J., Zhu, Yimei, & Tao, Jing. Probing the pathway of an ultrafast structural phase transition to illuminate the transition mechanism in Cu2S.  United States.  doi:10.1063/1.5032132.

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                    Li, Junjie, Sun, Kai, Li, Jun, Meng, Qingping, Fu, Xuewen, Yin, Wei-Guo, Lu, Deyu, Li, Yan, Babzien, Marcus, Fedurin, Mikhail, Swinson, Christina, Malone, Robert, Palmer, Mark, Mathurin, Leanne, Manso, Ryan, Chen, Jingyi, Konik, Robert M., Cava, Robert J., Zhu, Yimei, and Tao, Jing. Tue .  
        "Probing the pathway of an ultrafast structural phase transition to illuminate the transition mechanism in Cu2S".  United States.  doi:10.1063/1.5032132.

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@article{osti_1473656,

  title        = {Probing the pathway of an ultrafast structural phase transition to illuminate the transition mechanism in Cu2S},

  author       = {Li, Junjie and Sun, Kai and Li, Jun and Meng, Qingping and Fu, Xuewen and Yin, Wei-Guo and Lu, Deyu and Li, Yan and Babzien, Marcus and Fedurin, Mikhail and Swinson, Christina and Malone, Robert and Palmer, Mark and Mathurin, Leanne and Manso, Ryan and Chen, Jingyi and Konik, Robert M. and Cava, Robert J. and Zhu, Yimei and Tao, Jing},

  abstractNote = {Disentangling the primary order parameter from secondary order parameters in phase transitions is critical to the interpretation of transition mechanisms in strongly correlated systems and quantum materials. Here in this work, we present a study of structural phase transition pathways in superionic Cu2S nanocrystals that exhibit intriguing properties. Utilizing ultrafast electron diffraction techniques sensitive to both the momentum-space and the time-domain, we distinguish the dynamics of crystal symmetry breaking and lattice expansion in this system. We are able to follow the transient states along the transition pathway, and so observe the dynamics of both the primary and secondary order parameters. Based on these observations, we argue that the mechanism of structural phase transition in Cu2S is dominated by the electron-phonon coupling. Lastly, this mechanism advances the understanding from previous results, where the focus was solely on dynamic observations of the lattice expansion.},

  doi          = {10.1063/1.5032132},

  journal      = {Applied Physics Letters},

  number       = 4,

  volume       = 113,

  place        = {United States},

  year         = {2018},

  month        = {7}

}

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Works referenced in this record:

Copper ion liquid-like thermoelectrics
journal, March 2012

Liu, Huili; Shi, Xun; Xu, Fangfang
Nature Materials, Vol. 11, Issue 5, p. 422-425
DOI: 10.1038/nmat3273

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Similar Records

This content will become publicly available on July 24, 2019

Title: Probing the pathway of an ultrafast structural phase transition to illuminate the transition mechanism in Cu 2S

Abstract

Citation Formats

Copper ion liquid-like thermoelectrics journal, March 2012

Title: Probing the pathway of an ultrafast structural phase transition to illuminate the transition mechanism in Cu ₂S

Copper ion liquid-like thermoelectrics
journal, March 2012