activity
19972007
most citedAging and Memory Effects in Superparamagnets and Superspin Glasses

360 citations · 689 across the 7 of their papers we have counts for

collaborators

7 papers

cond-mat.dis-nn2007★ 24 cited

Scaling Analysis of Domain-Wall Free-Energy in the Edwards-Anderson Ising Spin Glass in a Magnetic Field

M. Sasaki, K. Hukushima, H. Yoshino +1

The stability of the spin-glass phase against a magnetic field is studied in the three and four dimensional Edwards-Anderson Ising spin glasses. Effective couplings and effective f…

cond-mat.dis-nn2004★ 360 cited

Aging and Memory Effects in Superparamagnets and Superspin Glasses

M. Sasaki, P. E. Jönsson, H. Takayama +1

Many dense magnetic nanoparticle systems exhibit slow dynamics which is qualitatively indistinguishable from that observed in atomic spin glasses and its origin is attributed to di…

cond-mat.str-el2003★ 246 cited

Neel Temperature of Quasi-Low-Dimensional Heisenberg Antiferromagnets

C. Yasuda, S. Todo, K. Hukushima +4

The Néel temperature, , of quasi-one- and quasi-two-dimensional antiferromagnetic Heisenberg models on a cubic lattice is calculated by Monte Carlo simulations as a func…

cond-mat.dis-nn2003★ 12 cited

Aging phenomena in spin glasses: theory, experiment, and simulation

H. Takayama

We study numerically temperature-shift and field-shift aging protocols on the 3-dimensional (3D) Ising Edwards-Anderson (EA) spin-glass (SG) model focusing on respectively the temp…

cond-mat.dis-nn1999★ 2 cited

Numerical Study on Aging Dynamics in the 3D Ising Spin-Glass Model --- Quasi-Equilibrium Behaviour of Spin Auto-Correlation Functions

H. Takayama, H. Yoshino, T. Komori

Using Monte Carlo simulations, we have studied aging phenomena in three-dimensional Gaussian Ising spin-glass model focusing on quasi-equilibrium behavior of the spin auto-correlat…

cond-mat.soft1998★ 10 cited

A new bond fluctuation method for a polymer undergoing gel electrophoresis

Ryuzo Azuma, Hajime Takayama

We present a new computational methodology for the investigation of gel electrophoresis of polyelectrolytes. We have developed the method initially to incorporate sliding motion of…