Hiroki Katow
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View article: Eigenmode analysis of the multiple temperature model: spectrum properties, hierarchical structures, and temperature inversion
Eigenmode analysis of the multiple temperature model: spectrum properties, hierarchical structures, and temperature inversion Open
Recent developments of ultrafast laser pulse techniques enable us to study the subpicosecond scale dynamics out of thermal equilibrium. Multiple temperature models (MTMs) are frequently used to describe such dynamics where the total system…
View article: Exact solutions, spectrum properties, and hierarchical structures of the multiple temperature model
Exact solutions, spectrum properties, and hierarchical structures of the multiple temperature model Open
Recent developments of ultrafast laser pulse techniques enable us to study the subpicosecond scale dynamics out of thermal equilibrium. Multiple temperature models are frequently used to describe such dynamics where the total system is div…
View article: First Principles Study of the Optical Dipole Trap for Two-Dimensional Excitons in Graphane
First Principles Study of the Optical Dipole Trap for Two-Dimensional Excitons in Graphane Open
Recent studies on excitons in two-dimensional materials have been widely conducted for their potential usages for novel electronic and optical devices. Especially, sophisticated manipulation techniques of quantum degrees of freedom of exci…
View article: <i>Ab initio</i> approach to lattice softening of an Al slab driven by collective electronic excitations after ultrashort laser pulse irradiation
<i>Ab initio</i> approach to lattice softening of an Al slab driven by collective electronic excitations after ultrashort laser pulse irradiation Open
Recent advances in ultrashort laser pulse techniques have opened up a wide\nvariety of applications in both fundamental physics and industrial fields. In\nthis work, $ab$ $initio$ molecular dynamics simulations based on time-dependent\nden…
View article: Numerical investigation of triexciton stabilization in diamond with multiple valleys and bands
Numerical investigation of triexciton stabilization in diamond with multiple valleys and bands Open
The existence of polyexcitons, the $N$-body complexes of excitons for $N > 2$\nin 3D bulk systems, has been controversial for more than 40 years since its\nfirst theoretical suggestion. We investigated the stability of fundamental\nexciton…