Zobrazeno 1 - 10
of 28
pro vyhledávání: '"O. I. Utesov"'
Publikováno v:
Physical Review Research, Vol 5, Iss 1, p 013153 (2023)
Modification of optical phonon spectra in contacting nonpolar nanoparticles compared to single particles is studied. Optical phonons in dielectric and semiconducting particles obey the Euclidean metric Klein-Fock-Gordon equation with Dirichlet bounda
Externí odkaz:
https://doaj.org/article/69b52b0052b04f4da2b711b000ad6c12
Publikováno v:
Journal of Raman Spectroscopy. 52:1847-1859
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4102cd8b6329960f11641a31015e250b
https://doi.org/10.1002/jrs.6242
https://doi.org/10.1002/jrs.6242
Publikováno v:
The Journal of Physical Chemistry C. 125:18444-18455
Optical phonons in nanoparticles with the randomness of interatomic bonds are considered both analytically and numerically. For weak dilute disorder two qualitatively different regimes of separated and overlapped levels are observed, resembling the c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ded042ce9d35c735c44074f330d5dc8c
https://doi.org/10.1021/acs.jpcc.1c04007
https://doi.org/10.1021/acs.jpcc.1c04007
Publikováno v:
Journal of Experimental and Theoretical Physics. 132:588-595
Polarized small-angle neutron scattering was used for studying of critical fluctuations in the Dzyaloshinskii–Moriya helimagnets Mn1 – xFexSi with x = 0.10, 0.15, 0.20. The Mn1 – xFexSi compounds are helically ordered below Tc and show a helica
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::728d86ccabe8552c2c5602c44dbb10d1
https://doi.org/10.1134/s1063776121040075
https://doi.org/10.1134/s1063776121040075
Publikováno v:
ЖУРНАЛ ЭКСПЕРИМЕНТАЛЬНОЙ И ТЕОРЕТИЧЕСКОЙ ФИЗИКИ. 159:690-695
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0b2b7f7aa3334af670f550f854c5965f
https://doi.org/10.31857/s0044451021040106
https://doi.org/10.31857/s0044451021040106
Publikováno v:
Physical Review B. 102
Microscopic description of Raman spectra in nanopowders of nonpolar crystals is accomplished by developing the theory of disorder-induced broadening of optical vibrational eigenmodes. Analytical treatment of this problem is performed, and line shape
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::20b8ebedcdb68628ea25dff26d5d3ae3
https://doi.org/10.1103/physrevb.102.205421
https://doi.org/10.1103/physrevb.102.205421
Autor:
A. V. Syromyatnikov, O. I. Utesov
We discuss theoretically a frustrated Heisenberg antiferromagnet in magnetic field close to the saturation one. It is demonstrated that a small biaxial anisotropy and/or the magnetic dipolar interaction produce a delicate balance between phases with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ee7c9ce5111ee203fe614e7b9f8104a2
http://arxiv.org/abs/2008.04234
http://arxiv.org/abs/2008.04234
Autor:
V. Ukleev, Kiyou Shibata, Hironori Nakao, Yuichi Yamasaki, Yoshinori Tokura, Taka-hisa Arima, O. I. Utesov, Nicolas Jaouen, Naoya Kanazawa
The tensile strain is a promising tool for creation and manipulation of magnetic solitonic textures in the chiral helimagnets via tunable control of magnetic anisotropy and Dzyaloshinskii-Moriya interaction. Here, by using the in-situ resonant small-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::71fa92c0ad3822e7c051dbdab8848ef4
http://arxiv.org/abs/2004.12426
http://arxiv.org/abs/2004.12426
Autor:
O. I. Utesov
Motivated by recent experimental results on GdRu$_2$Si$_2$ [Khanh, N.D., Nakajima, T., Yu, X. et al., \emph{Nat. Nanotechnol.} \textbf{15}, 444-449 (2020)], where nanometric square skyrmion lattice was observed, we propose simple analytical mean-fiel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1d26ab46d118c3eb7cc05e359a52b39d
Publikováno v:
The Journal of Physical Chemistry C. 122:22738-22749
A simple way to investigate theoretically the Raman spectra (RS) of nonpolar nanoparticles is proposed. For this aim, we substitute the original lattice optical phonon eigenproblem by the continuou...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f924ba15885582b61ec670defcb6ccc3
https://doi.org/10.1021/acs.jpcc.8b07061
https://doi.org/10.1021/acs.jpcc.8b07061