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electronicTransmissionCoefficient <- function(J, lambda, nuN, temp = 300){
if(missing(J))
stop("Please specify the electronic coupling (J)")
if(missing(lambda))
stop("Please specify the reorganization energy (lambda)")
if(missing(nuN))
stop("Please specify the frequency of the effective vibrational mode (nuN)")
args <- list(
J = J,
lambda = lambda,
nuN = nuN,
temp = temp)
are.list <- sapply(args, is.list)
if(any(are.list))
stop("Arguments must be vectors, matrices or data.frames")
are.data.frame <- sapply(args, is.data.frame)
args[are.data.frame] <- lapply(args[are.data.frame], as.matrix)
are.numeric <- sapply(args, is.numeric)
if(any(!are.numeric))
stop("Arguments must be numeric")
are.scalar <- sapply(args, function(x) return(length(x) == 1))
if(!are.scalar["temp"])
stop("'temp' must be a scalar")
if(!are.scalar["nuN"])
stop("'nuN' must be a scalar")
lengths <- sapply(args[!are.scalar], length)
dims <- lapply(args[!are.scalar], dim )
if(length(lengths) != 0)
if(!all(sapply(dims, identical, dims[[1]])) | !all(sapply(lengths, identical, lengths[[1]])))
stop("Arguments must be scalars or have the same dimensions and lengths")
PLZ <- LandauZenerProbability(args$J, args$lambda, args$nuN, args$temp)
kel <- 2*PLZ/(1+PLZ)
}
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