Critical behavior of quasi-two-dimensional semiconducting ferromagnet Cr2Ge2Te6

Critical behavior of quasi-two-dimensional semiconducting ferromagnet Cr2Ge2Te6 The critical properties of the single-crystalline semiconducting ferromagnet Cr2Ge2Te6 were investigated by bulk dc magnetization around the paramagnetic to ferromagnetic phase transition. Critical exponents β=0.200±0.003 with a critical temperature Tc=62.65±0.07 K and γ=1.28±0.03 with Tc=62.75±0.06 K are obtained by the Kouvel-Fisher method whereas δ=7.96±0.01 is obtained by a critical isotherm analysis at Tc=62.7 K. These critical exponents obey the Widom scaling relation δ=1+γ/β, indicating self-consistency of the obtained values. With these critical exponents the isotherm M(H) curves below and above the critical temperatures collapse into two independent universal branches, obeying the single scaling equation m=f±(h), where m and h are renormalized magnetization and field, respectively. The determined exponents match well with those calculated from the results of the renormalization group approach for a two-dimensional Ising system coupled with a long-range interaction between spins decaying as J(r)≈r−(d+σ) with σ=1.52. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review B American Physical Society (APS)

Critical behavior of quasi-two-dimensional semiconducting ferromagnet Cr2Ge2Te6

Preview Only

Critical behavior of quasi-two-dimensional semiconducting ferromagnet Cr2Ge2Te6

Abstract

The critical properties of the single-crystalline semiconducting ferromagnet Cr2Ge2Te6 were investigated by bulk dc magnetization around the paramagnetic to ferromagnetic phase transition. Critical exponents β=0.200±0.003 with a critical temperature Tc=62.65±0.07 K and γ=1.28±0.03 with Tc=62.75±0.06 K are obtained by the Kouvel-Fisher method whereas δ=7.96±0.01 is obtained by a critical isotherm analysis at Tc=62.7 K. These critical exponents obey the Widom scaling relation δ=1+γ/β, indicating self-consistency of the obtained values. With these critical exponents the isotherm M(H) curves below and above the critical temperatures collapse into two independent universal branches, obeying the single scaling equation m=f±(h), where m and h are renormalized magnetization and field, respectively. The determined exponents match well with those calculated from the results of the renormalization group approach for a two-dimensional Ising system coupled with a long-range interaction between spins decaying as J(r)≈r−(d+σ) with σ=1.52.
Loading next page...
 
/lp/aps_physical/critical-behavior-of-quasi-two-dimensional-semiconducting-ferromagnet-sOKAWHTblC
Publisher
The American Physical Society
Copyright
Copyright © ©2017 American Physical Society
ISSN
1098-0121
eISSN
1550-235X
D.O.I.
10.1103/PhysRevB.96.054406
Publisher site
See Article on Publisher Site

Abstract

The critical properties of the single-crystalline semiconducting ferromagnet Cr2Ge2Te6 were investigated by bulk dc magnetization around the paramagnetic to ferromagnetic phase transition. Critical exponents β=0.200±0.003 with a critical temperature Tc=62.65±0.07 K and γ=1.28±0.03 with Tc=62.75±0.06 K are obtained by the Kouvel-Fisher method whereas δ=7.96±0.01 is obtained by a critical isotherm analysis at Tc=62.7 K. These critical exponents obey the Widom scaling relation δ=1+γ/β, indicating self-consistency of the obtained values. With these critical exponents the isotherm M(H) curves below and above the critical temperatures collapse into two independent universal branches, obeying the single scaling equation m=f±(h), where m and h are renormalized magnetization and field, respectively. The determined exponents match well with those calculated from the results of the renormalization group approach for a two-dimensional Ising system coupled with a long-range interaction between spins decaying as J(r)≈r−(d+σ) with σ=1.52.

Journal

Physical Review BAmerican Physical Society (APS)

Published: Aug 3, 2017

There are no references for this article.

Sorry, we don’t have permission to share this article on DeepDyve,
but here are related articles that you can start reading right now:

Explore the DeepDyve Library

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

Monthly Plan

  • Read unlimited articles
  • Personalized recommendations
  • No expiration
  • Print 20 pages per month
  • 20% off on PDF purchases
  • Organize your research
  • Get updates on your journals and topic searches

$49/month

Start Free Trial

14-day Free Trial

Best Deal — 39% off

Annual Plan

  • All the features of the Professional Plan, but for 39% off!
  • Billed annually
  • No expiration
  • For the normal price of 10 articles elsewhere, you get one full year of unlimited access to articles.

$588

$360/year

billed annually
Start Free Trial

14-day Free Trial