Verification of a new quantum simulation approach through its application to two-dimensional Ising lattices

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F15%3A10285419" target="_blank" >RIV/00216208:11320/15:10285419 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.physe.2014.10.013" target="_blank" >http://dx.doi.org/10.1016/j.physe.2014.10.013</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.physe.2014.10.013" target="_blank" >10.1016/j.physe.2014.10.013</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Verification of a new quantum simulation approach through its application to two-dimensional Ising lattices

Popis výsledku v původním jazyce

A new quantum simulation approach has been applied in the present work to the two-dimensional (2D) ferromagnetic and antiferromagnetic Ising lattices to calculate their magnetic structures, magnetizations, free energies and specific heats in the absenceof an external magnetic field. Surprisingly, no size effects could be observed in our simulations performed for the Ising lattices of different sizes. Most importantly, our calculated spontaneous thermally averaged spins for the two kinds of systems areexactly same as those evaluated with quantum mean field theory, and the magnetic structures simulated at all chosen temperatures are perfectly ferromagnetic or antiferromagnetic, verifying the correctness and applicability of our quantum model and computational algorithm. On the other hand, if the classical Monte Carlo (CMC) method is applied to the ferromagnetic 2D Ising lattice with S = 1, it is able to generate correct magnetization well consistent with Onsager's theory; but in the ca

Název v anglickém jazyce

Verification of a new quantum simulation approach through its application to two-dimensional Ising lattices

Popis výsledku anglicky

A new quantum simulation approach has been applied in the present work to the two-dimensional (2D) ferromagnetic and antiferromagnetic Ising lattices to calculate their magnetic structures, magnetizations, free energies and specific heats in the absenceof an external magnetic field. Surprisingly, no size effects could be observed in our simulations performed for the Ising lattices of different sizes. Most importantly, our calculated spontaneous thermally averaged spins for the two kinds of systems areexactly same as those evaluated with quantum mean field theory, and the magnetic structures simulated at all chosen temperatures are perfectly ferromagnetic or antiferromagnetic, verifying the correctness and applicability of our quantum model and computational algorithm. On the other hand, if the classical Monte Carlo (CMC) method is applied to the ferromagnetic 2D Ising lattice with S = 1, it is able to generate correct magnetization well consistent with Onsager's theory; but in the ca

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

—

Projekt

<a href="/cs/project/GAP204%2F12%2F0692" target="_blank" >GAP204/12/0692: Magnetické polyfunkční materiály - nové přístupy teorie a experimentu</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physica E: Low-Dimensional Systems and Nanostructures

ISSN

1386-9477

e-ISSN

—

Svazek periodika

66

Číslo periodika v rámci svazku

únor

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

6

Strana od-do

170-175

Kód UT WoS článku

000346552300026

EID výsledku v databázi Scopus

2-s2.0-84908398767