Results 111 to 120 of about 32,713 (278)

Frustrations on Decorated Square Lattice in Ising Model

In this paper, we performed the comprehensive studies of frustration properties in the Ising model on a decorated square lattice in the framework of an exact analytical approach based on the Kramers--Wannier transfer matrix method. The assigned challenge consisted in finding rigorous formulas for residual entropies of all possible frustrations without ...
Kassan-Ogly, F. A., Zarubin, A. V.
openaire   +2 more sources

Renormalization group maps for Ising models in lattice gas variables

, 2009
Real space renormalization group maps, e.g., the majority rule transformation, map Ising type models to Ising type models on a coarser lattice. We show that each coefficient of the renormalized Hamiltonian in the lattice gas variables depends on only a ...
A. Brandt, A.C.D. Enter van, A.C.D. Enter van, D. Ron, D. Ron, D. Ron, D. Ron, I.A. Kashapov, R. Gupta, R. Shankar, R. Swendsen, R. Swendsen, R.B. Griffiths, R.B. Israel, R.B. Israel, T. Kennedy, T. Kennedy, Tom Kennedy   +17 more
core   +2 more sources

Aromatic Self‐Assembled Monolayers Enhance Lifetime of Silver SERS Substrates and Provide their Chemical Functionalization

Advanced Materials Interfaces, EarlyView.
Surface enhanced Raman spectroscopy (SERS) is a highly attractive method combining unique specificity with great sensitivity. For protecting the silver‐based SERS substrates, aromatic self‐assembled monolayers consisting of biphenyl‐4‐thiol and 4′‐nitro‐4‐biphenylthiol molecules are deposited and characterized.
Christof Neumann, Susanne Pahlow, Martha Frey, Andreas Arnlind, Martin Jahn, Maria Küllmer, Julian Picker, Uwe Hübner, Karina Weber, Jürgen Popp, Andrey Turchanin   +10 more
wiley   +1 more source

Stability of Noncentrosymmetric Square Skyrmion Crystals with Easy-Axis and Easy-Plane Magnetic Anisotropy

Magnetism
We investigate the stability tendency of a magnetic skyrmion crystal in noncentrosymmetric tetragonal systems with the Dzyaloshinskii–Moriya interaction.
Satoru Hayami
doaj   +1 more source

Variational approach to the scaling function of the 2D Ising model in a magnetic field

, 2008
The universal scaling function of the square lattice Ising model in a magnetic field is obtained numerically via Baxter's variational corner transfer matrix approach.
Batchelor M T, Baxter R J, Baxter R J, Cardy J, Caselle M, Caselle M, Caselle M, Delfino G, Essam J W, Mangazeev V V Batchelor M T Bazhanov V V Dudalev M Yu, McCoy B, Michael Yu Dudalev, Murray T Batchelor, Nickel B, Onsager L, Patashinskii A Z, Vladimir V Bazhanov, Vladimir V Mangazeev, Warnaar S O   +18 more
core   +1 more source

Novel Evolutionarily Conserved Oncogene COA4 is Driven by KRAS Mutant and Promotes Cancer Metastasis Through Dual Mitochondrial Metabolism‐Dependent and ‐Independent Mechanisms

Advanced Science, EarlyView.
In KRAS‐mutant tumors, KRAS transcriptionally upregulates COA4 via the PI3K/AKT/E2F1 axis, promoting metastasis. Mechanistically, COA4 enhances tumor cell migration through dual pathways: within mitochondria, it boosts oxidative phosphorylation; in the cytoplasm, it binds and activates CDC42 to stimulate pseudopodia formation.
Xingzhao Ji, Weiying Zhang, Fuyuan Xue, Jiazhen Zeng, Qinghua Zhao, Xiaoming Sun, Jian Sun, Heng Zhou, Quanlin Xu, Guoyuan Ma, Shengnan Sun, Ying Wang, Qian Mu, Yi Liu, Qiang Wan   +14 more
wiley   +1 more source

The bulk, surface and corner free energies of the square lattice Ising model [PDF]

Journal of Physics A: Mathematical and Theoretical, 2016
We use Kaufman's spinor method to calculate the bulk, surface and corner free energies $f_b, f_s, f_s', f_c$ of the anisotropic square lattice zero-field Ising model for the ordered ferromagnetic case. For $f_b, f_s, f'_s$ our results of course agree with the early work of Onsager, McCoy and Wu.
openaire   +4 more sources

A Generative Framework for Predicting Antiferromagnets

Advanced Science, EarlyView.
This work establishes a design paradigm for antiferromagnets (AFM), accelerating next‐generation spintronic material discovery. By integrating a crystal diffusion variational autoencoder with data augmentation, crystal graph convolutional neural networks, and a genetic algorithm, latent vectors are updated toward AFM property spaces, expanding ...
Jianhu Gong, Zhengming Zhang, Zhenyu Fan, Hanghang Fu, Hongchang Wang, Dunhui Wang   +5 more
wiley   +1 more source

Anisotropic scaling of the two-dimensional Ising model I: the torus

SciPost Physics, 2019
We present detailed calculations for the partition function and the free energy of the finite two-dimensional square lattice Ising model with periodic and antiperiodic boundary conditions, variable aspect ratio, and anisotropic couplings, as well as ...
Hendrik Hobrecht, Alfred Hucht
doaj   +1 more source

High Mobility and Electrostatics in GeSn Quantum Wells With SiGeSn Barriers

Advanced Electronic Materials, EarlyView.
This study investigates electrical transport in GeSn quantum wells with SiGeSn barriers and characterizes hole mobilities as a function of hole density. The observed mobilities are higher than previously reported for GeSn quantum wells with similar compositions but with a Ge barrier.
Christopher R. Allemang, David Lidsky, Peter Sharma, Shang Liu, Jifeng Liu, Yunsheng Qiu, Shuiqing Yu, Tzu‐Ming Lu   +7 more
wiley   +1 more source