@article{oai:nagoya.repo.nii.ac.jp:00010785, author = {Sugiura, Kenji and Ohta, Hiromichi and Nakagawa, Shin-ichi and Huang, Rong and Ikuhara, Yuichi and Nomura, Kenji and Hosono, Hideo and Koumoto, Kunihito}, issue = {15}, journal = {APPLIED PHYSICS LETTERS}, month = {Apr}, note = {We give general formulations of the multidimensional multicanonical algorithm, simulated tempering, and replica-exchange method.We generalize the original potential energy function E0 by adding any physical quantity V of interest as a new energy term. These multidimensional generalized-ensemble algorithms then perform a random walk not only in E0 space but also in V space. Among the three algorithms, the replica-exchange method is the easiest to perform because the weight factor is just a product of regular Boltzmann-like factors, while the weight factors for the multicanonical algorithm and simulated tempering are not a priori known. We give a simple procedure for obtaining the weight factors for these two latter algorithms, which uses a short replica-exchange simulation and the multiple-histogram reweighting techniques. As an example of applications of these algorithms, we have performed a two-dimensional replica-exchange simulation and a two-dimensional simulated-tempering simulation using an α-helical peptide system. From these simulations, we study the helix-coil transitions of the peptide in gas phase and in aqueous solution.}, pages = {152105--152105}, title = {Anisotropic carrier transport properties in layered cobaltate epitaxial films grown by reactive solid-phase epitaxy}, volume = {94}, year = {2009} }