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Xie BB, Jia PK, Wang KX, Chen WK, Liu XY, Cui G. Generalized Ab Initio Nonadiabatic Dynamics Simulation Methods from Molecular to Extended Systems. J Phys Chem A 2022; 126:1789-1804. [PMID: 35266391 DOI: 10.1021/acs.jpca.1c10195] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Nonadiabatic dynamics simulation has become a powerful tool to describe nonadiabatic effects involved in photophysical processes and photochemical reactions. In the past decade, our group has developed generalized trajectory-based ab initio surface-hopping (GTSH) dynamics simulation methods, which can be used to describe a series of nonadiabatic processes, such as internal conversion, intersystem crossing, excitation energy transfer and charge transfer of molecular systems, and photoinduced nonadiabatic carrier dynamics of extended systems with and without spin-orbit couplings. In this contribution, we will first give a brief introduction to our recently developed methods and related numerical implementations at different computational levels. Later, we will present some of our latest applications in realistic systems, which cover organic molecules, biological proteins, organometallic compounds, periodic organic and inorganic materials, etc. Final discussion is given to challenges and outlooks of ab initio nonadiabatic dynamics simulations.
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Affiliation(s)
- Bin-Bin Xie
- Hangzhou Institute of Advanced Studies, Zhejiang Normal University, 1108 Gengwen Road, Hangzhou 311231, Zhejiang, P. R. China
| | - Pei-Ke Jia
- Hangzhou Institute of Advanced Studies, Zhejiang Normal University, 1108 Gengwen Road, Hangzhou 311231, Zhejiang, P. R. China
| | - Ke-Xin Wang
- Hangzhou Institute of Advanced Studies, Zhejiang Normal University, 1108 Gengwen Road, Hangzhou 311231, Zhejiang, P. R. China
| | - Wen-Kai Chen
- Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Xiang-Yang Liu
- College of Chemistry and Material Science, Sichuan Normal University, Chengdu 610068, Sichuan, P. R. China
| | - Ganglong Cui
- Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
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2
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Shama, Gopal RK, Sheet G, Singh Y. 2D weak anti-localization in thin films of the topological semimetal Pd[Formula: see text]Bi[Formula: see text]S[Formula: see text]. Sci Rep 2021; 11:12618. [PMID: 34135373 PMCID: PMC8209139 DOI: 10.1038/s41598-021-91930-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 05/31/2021] [Indexed: 11/24/2022] Open
Abstract
Pd[Formula: see text]Bi[Formula: see text]S[Formula: see text] (PBS) is a recently proposed topological semimetal candidate. However, evidence for topological surface states have not yet been revealed in transport measurements due to the large mobility of bulk carriers. We report the growth and magneto-transport studies of PBS thin films where the mobility of the bulk carriers is reduced by two orders of magnitude, revealing for the first time, contributions from the 2-dimensional (2D) topological surface states in the observation of the 2D weak anti-localization (WAL) effect in magnetic field and angle dependent conductivity measurements. The magnetotransport data is analysed within the 2D Hikami-Larkin-Nagaoka (HLN) theory. The analysis suggests that multiple conduction channels contribute to the transport. It is also found that the temperature dependence of the dephasing length can't be explained only by electron-electron scattering and that electron-phonon scattering also contributes to the phase relaxation mechanism in PBS films.
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Affiliation(s)
- Shama
- Department of Physical Sciences, Indian Institute of Science Education and Research, Knowledge city, Sector 81, SAS Nagar, Manauli, Mohali, Punjab PO 140306 India
| | - R. K. Gopal
- Department of Physical Sciences, Indian Institute of Science Education and Research, Knowledge city, Sector 81, SAS Nagar, Manauli, Mohali, Punjab PO 140306 India
| | - Goutam Sheet
- Department of Physical Sciences, Indian Institute of Science Education and Research, Knowledge city, Sector 81, SAS Nagar, Manauli, Mohali, Punjab PO 140306 India
| | - Yogesh Singh
- Department of Physical Sciences, Indian Institute of Science Education and Research, Knowledge city, Sector 81, SAS Nagar, Manauli, Mohali, Punjab PO 140306 India
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Chen H, He J, Malliakas CD, Stoumpos CC, Rettie AJE, Bao JK, Chung DY, Kwok WK, Wolverton C, Kanatzidis MG. A Natural 2D Heterostructure [Pb3.1Sb0.9S4][AuxTe2–x] with Large Transverse Nonsaturating Negative Magnetoresistance and High Electron Mobility. J Am Chem Soc 2019; 141:7544-7553. [DOI: 10.1021/jacs.9b02599] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Haijie Chen
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
- Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Jiangang He
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Christos D. Malliakas
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | | | - Alexander J. E. Rettie
- Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Jin-Ke Bao
- Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Duck Young Chung
- Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Wai-Kwong Kwok
- Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Christopher Wolverton
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Mercouri G. Kanatzidis
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
- Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
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Matetskiy AV, Denisov NV, Zotov AV, Saranin AA. Weak Antilocalization at the Atomic-Scale Limit of Metal Film Thickness. NANO LETTERS 2019; 19:570-575. [PMID: 30511866 DOI: 10.1021/acs.nanolett.8b04560] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Creation of the 2D metallic layers with the thickness as small as a few atomic layers and investigation of their properties are interesting and challenging tasks of the modern condensed-matter physics. One of the possible ways to grow such layers resides in the synthesis of the so-called metal-induced reconstructions on silicon (i.e., silicon substrates covered with ordered metal films of monolayer or submonolayer thickness). The 2D Au-Tl compound on Si(111) surface having [Formula: see text] periodicity belongs to the family of the reconstructions incorporating heavy-metal atoms with a strong spin-orbit coupling (SOC). In such systems, strong SOC results in the spin-splitting of surface-state bands due to the Rashba effect, the occurrence of which was experimentally proved. Another remarkable consequence of a strong SOC that manifests itself in the transport properties is a weak antilocalization (WAL) effect, which has never been explored in the metal layers of atomic thickness. In the present study, the transport and magnetotransport properties of the 2D Au-Tl compound on Si(111) surface were investigated at low temperatures down to ∼2.0 K. The compound was proved to show behavior of the 2D nearly free electron gas system with metallic conduction, as indicated by Ioffe-Regel criterion. It demonstrates the WAL effect which is interpreted in the framework of Hikami-Larkin-Nagaoka theory, and possible mechanisms of the electron decoherence are discussed. Bearing in mind that besides the (Au, Tl)/Si(111)[Formula: see text] system, there are many other ordered atomic-layer metal films on silicon differing by composition, structure, strength of SOC, and spin texture, which provide a promising area for prospective investigations of the WAL effect at the atomic-scale limit when the film thickness is less than the electron wavelength.
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Affiliation(s)
- Andrey V Matetskiy
- Institute of Automation and Control Processes FEB RAS , 690041 Vladivostok , Russia
| | - Nikita V Denisov
- Institute of Automation and Control Processes FEB RAS , 690041 Vladivostok , Russia
| | - Andrey V Zotov
- Institute of Automation and Control Processes FEB RAS , 690041 Vladivostok , Russia
- School of Natural Sciences , Far Eastern Federal University , 690950 Vladivostok , Russia
| | - Alexander A Saranin
- Institute of Automation and Control Processes FEB RAS , 690041 Vladivostok , Russia
- School of Natural Sciences , Far Eastern Federal University , 690950 Vladivostok , Russia
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Mironov AY, Postolova SV, Baturina TI. Quantum contributions to the magnetoconductivity of critically disordered superconducting TiN films. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2018; 30:485601. [PMID: 30418946 DOI: 10.1088/1361-648x/aae870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The onset of superconductivity in the presence of disorder is a fundamental problem of condensed matter physics. Here we investigate the magnetoconductance of disordered ([Formula: see text]) superconducting TiN films above the critical temperature T c. We show that the magnetoconductivity of moderately disordered films with [Formula: see text] is in full agreement with the perturbative theory of quantum contributions to conductivity. We demonstrate that the magnetoconductivity of films with [Formula: see text] is also in agreement with the perturbative theory down to temperatures [Formula: see text]. The quantitative discrepancy between experiment and theory develops only below temperatures [Formula: see text] for films with [Formula: see text]. This discrepancy can be eliminated if we assume steeper temperature dependence of the Larkin's electron-electron attraction strength, [Formula: see text]. The obtained temperature dependence of electron phase breaking time [Formula: see text] is in agreement with theoretical predictions for all samples.
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Affiliation(s)
- A Yu Mironov
- Department of Physics, Novosibirsk State University, 2 Pirogova Str., 630090 Novosibirsk, Russia. A V Rzhanov Institute of Semiconductor Physics SB RAS, 13 Lavrentjev Av., 630090 Novosibirsk, Russia
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Feng YP, Shen L, Yang M, Wang A, Zeng M, Wu Q, Chintalapati S, Chang CR. Prospects of spintronics based on 2D materials. WILEY INTERDISCIPLINARY REVIEWS-COMPUTATIONAL MOLECULAR SCIENCE 2017. [DOI: 10.1002/wcms.1313] [Citation(s) in RCA: 101] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Yuan Ping Feng
- Department of Physics; National University of Singapore; Singapore
- Centre for Advanced Two-dimensional Materials; National University of Singapore; Singapore
| | - Lei Shen
- Department of Mechanical Engineering; National University of Singapore; Singapore
- Engineering Science Programme; National University of Singapore; Singapore
| | - Ming Yang
- Institute of Materials Science and Engineering; A*STAR; Singapore
| | - Aizhu Wang
- Department of Physics; National University of Singapore; Singapore
- Department of Electrical and Computer Engineering; National University of Singapore; Singapore
| | | | - Qingyun Wu
- Department of Materials Science and Engineering; National University of Singapore; Singapore
| | - Sandhya Chintalapati
- Centre for Advanced Two-dimensional Materials; National University of Singapore; Singapore
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