[
    {
        "id": "authors:je0t9-w4224",
        "collection": "authors",
        "collection_id": "je0t9-w4224",
        "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20210628-191053480",
        "type": "article",
        "title": "The Drude-Smith Equation and Related Equations for the Frequency-Dependent Electrical Conductivity of Materials: Insight from a Memory Function Formalism",
        "author": [
            {
                "family_name": "Chen",
                "given_name": "Wei-Chen",
                "clpid": "Chen-Wei-Chen"
            },
            {
                "family_name": "Marcus",
                "given_name": "Rudolph A.",
                "orcid": "0000-0001-6547-1469",
                "clpid": "Marcus-R-A"
            }
        ],
        "abstract": "The Drude-Smith equation is widely used for treating the frequency-dependent electrical conductivity of materials in the terahertz region. An attractive feature is its sparsity of adjustable parameters. A significant improvement over Drude theory for these materials, the theory includes backscattering of the charge carriers. It has nevertheless been criticized, including by Smith himself, because of the arbitrariness of a step in the derivation. We recall a somewhat similar behavior of back scattering in fluids observed in molecular dynamics computations and discussed in terms of memory functions. We show how theories such as Drude-Smith and Cocker et\u2005al. are examples of a broader class of theories by showing how they also arise as particular cases of a memory function formalism that divides the interactions into short and long range.",
        "doi": "10.1002/cphc.202100299",
        "pmcid": "PMC8456847",
        "issn": "1439-4235",
        "publisher": "Wiley",
        "publication": "ChemPhysChem",
        "publication_date": "2021-08-18",
        "series_number": "16",
        "volume": "22",
        "issue": "16",
        "pages": "1667-1674"
    },
    {
        "id": "authors:haa02-1wp25",
        "collection": "authors",
        "collection_id": "haa02-1wp25",
        "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150316-141630410",
        "type": "article",
        "title": "Isotopomer fractionation in the UV photolysis of N_2O: 2. Further comparison of theory and experiment",
        "author": [
            {
                "family_name": "Chen",
                "given_name": "Wei-Chen",
                "clpid": "Chen-Wei-Chen"
            },
            {
                "family_name": "Prakash",
                "given_name": "Meher K.",
                "clpid": "Prakash-M-K"
            },
            {
                "family_name": "Marcus",
                "given_name": "R. A.",
                "orcid": "0000-0001-6547-1469",
                "clpid": "Marcus-R-A"
            }
        ],
        "abstract": "Wavelength-dependent fractionation of various isotopomers in the photodissociation of N_2O is studied. The absorption cross sections are calculated by a time-independent reflection principle, related to the Prakash et al. (2005) treatment but now with an inclusion of the NN stretching coordinate and both the 2A\u2032 and 1A\u2033 electronic excited states. The added 1A\u2033 state is found to have little effect on both the absorption cross section and the fractionation. The improvements include more physical details in the photodissociation of N_2O, while maintaining an advantage of a treatment in the work by Prakash et al. (2005) that was not computationally intensive. The present calculated fractionation, without a significant adjustable parameter, gives good agreement with experiments in the absorption cross section in the low-energy region, the important region for the experimentally observed isotopic fractionation.",
        "doi": "10.1029/2007JD009180",
        "issn": "0148-0227",
        "publisher": "American Geophysical Union",
        "publication": "Journal of Geophysical Research D",
        "publication_date": "2008-03-08",
        "series_number": "D5",
        "volume": "113",
        "issue": "D5",
        "pages": "Art. No. D05309"
    },
    {
        "id": "authors:ywtsv-75n34",
        "collection": "authors",
        "collection_id": "ywtsv-75n34",
        "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20230120-922992200.1",
        "type": "article",
        "title": "Half- and full-integer power law for distance fluctuations: Langevin dynamics in one- and two-dimensional systems",
        "author": [
            {
                "family_name": "Chen",
                "given_name": "Wei-Chen",
                "clpid": "Chen-Wei-Chen"
            },
            {
                "family_name": "Tang",
                "given_name": "Jau",
                "orcid": "0000-0003-2078-1513",
                "clpid": "Tang-Jau"
            }
        ],
        "abstract": "Langevin dynamics of one- and two-dimensional systems with the nearest neighbor couplings is examined to derive the autocorrelation function (ACF) of the distance fluctuations. Understanding of the dynamics of pairwise distance correlation is essential in the studies using single-molecule spectroscopy. For both 1-D cases of an open chain and a closed loop, a power law of t^(\u22121/2), t^(\u22123/2) and t^(\u22125/2) for the ACF are obtained, and for 2-D systems of a sheet and a tube, a power law of t\u207b\u00b9, t\u207b\u00b2 and t\u207b\u00b3 are found. The different exponent of the power law is shown to depend on the location of the pairwise beads and their topography.",
        "doi": "10.1016/j.chemphys.2006.10.012",
        "issn": "0301-0104",
        "publisher": "Elsevier",
        "publication": "Chemical Physics",
        "publication_date": "2007-01-08",
        "series_number": "2-3",
        "volume": "331",
        "issue": "2-3",
        "pages": "245-253"
    }
]