Electronic paramagnetic resonance of Gd3+ ions in a Pb1-x-yGdxCuyS narrow-gap semiconductor: effects of resonance transitions on conductivity

Мұқаба

Дәйексөз келтіру

Толық мәтін

Ашық рұқсат Ашық рұқсат
Рұқсат жабық Рұқсат берілді
Рұқсат жабық Тек жазылушылар үшін

Аннотация

In a crystals of the narrow-band semiconductor Pb1-x-yGdxCuyS (x = 1.1·10–3, y = 2.5·10–3) at temperatures T = 5—300 K, unusual dependences of the shape of the lines of the EPR spectra of paramagnetic centers Gd3+ on the temperature and microwave power level in the resonator of EPR-spectrometer were discovered by the electron paramagnetic resonance method. Based on the results of the analysis of the shape parameters of the resonance lines recorded in the X-range, it was concluded that one of the reasons for the unusual changes in the observed EPR spectra of Gd3+ centers is the uneven distribution of the acceptor impurity of copper with the formation of regions with different concentrations of free charge carriers. Apparently, in these regions, resonant transitions between the spin states of Gd3+ centers have different effects on the values of the kinetic characteristics of free charge carriers, which lead to different contributions to the quasi-resonant absorption of microwave power.

Толық мәтін

Рұқсат жабық

Авторлар туралы

V. Ulanov

Federal Research Center “Kazan Scientific Center of the Russian Academy of Sciences”; Kazan State Power Engineering University;

Email: rrza7@yandex.ru

Zavoisky Physical-Technical Institute

Ресей, Kazan; Kazan

R. Zaynullin

Kazan State Power Engineering University

Хат алмасуға жауапты Автор.
Email: rrza7@yandex.ru
Ресей, Kazan

I. Yatsyk

Federal Research Center “Kazan Scientific Center of the Russian Academy of Sciences”

Email: rrza7@yandex.ru

Zavoisky Physical-Technical Institute

Ресей, Kazan

A. Shestakov

Prokhorov General Physics Institute of the Russian Academy of Sciences

Email: rrza7@yandex.ru
Ресей, Moscow

A. Sinitsin

Kazan State Power Engineering University

Email: rrza7@yandex.ru
Ресей, Kazan

Әдебиет тізімі

  1. Равич Ю.И., Ефимова Б.А., Смирнов И.А. Методы исследования полупроводников в применении к халькогенидам свинца PbTe, PbSe и Pb S.М.: Наука, 1968. 384 c.
  2. Dyakonov M.I. // In: Springer Series in Solid-State Sciences. V. 157. Springer International Publishing AG, 2017.
  3. Kossut J., Gaj J.A. Introduction to the physics of diluted magnetic semiconductors. Berlin, Heidelberg: Springer-Verlag, 2010. 469 p.
  4. Teran F.J., Potemski M., Maude D.K. et al. // Physica E. 2003. V. 17. P. 335.
  5. Уланов В.А., Зайнуллин Р.Р., Хушея Т.А.Н., Яцык И.В. // Изв. РАН. Сер. физ. 2021. Т. 85. № 12. C. 1682, Ulanov V.A., Zainullin R.R., Housheya T.A.N., Yatsyk I.V. // Bull. Russ. Acad. Sci. 2021. V. 85. No. 12. P. 1337.
  6. Алексеева Г.Т., Ведерников М.В., Гуриева Е.А. и др. // ФТП. 1998. Т. 32. № 7. C. 806, Alekseeva G.T., Vedernikov M.V., Gurieva E.A. // Semiconductors. 1998. V. 32. No. 7. P. 716.
  7. Заячук Д.М., Добрянский О.А. // ФТП. 1998. Т. 32. № 11. С. 1331, Zayachuk D.M., Dobryanskiǐ O.A. // Semiconductors. 1998. V. 32. No. 11. P. 1185.
  8. Голенищев-Кутузов В.А., Синицин А.М., Лабутина Ю.В., Уланов В.А. // Изв. РАН. Сер. физ. 2018. Т. 82. № 7. С. 852, Golenishchev-Kutuzov V.A., Sinitsin A.M., Labutina Yu.V., Ulanov V.A. // Bull. Russ. Acad. Sci. Phys. 2018. V. 82. No. 7. P. 761.
  9. Уланов В.А., Зайнуллин Р.Р., Синицин А.М. и др. // Изв. РАН. Сер. физ. 2023. Т. 87. № 12. С. 1773, Ulanov V.A., Zainullin R.R., Sinizin A.M. et al. // Bull. Russ. Acad. Sci. 2023. V. 87. No. 12. P. 1856.
  10. Абрагам А., Блини Б. Электронный парамагнитный резонанс переходных ионов. Т. 1. М.: Мир, 1972. 652 с.
  11. Story T. // Phys. Rev. Lett. 1996. V. 77. No. 13. P. 2802.
  12. Vladimirova M., Cronenberger S., Barate P. et al. // Phys. Rev. B. 2008. V. 78. Art. No. 081305(R).

Қосымша файлдар

Қосымша файлдар
Әрекет
1. JATS XML
Жүктеу
2. Fig. 1. EPR spectra of a single-crystal sample of Pb1-x-yGdxCuyS, recorded in the orientations <001>ǁ→H0 and <111>ǁ→H0 (fmw = 9419±1 MHz, T = 5 K, Pmw = 2 mW).

Жүктеу (165KB)
Метадеректер
3. Fig. 2. EPR spectra of a single-crystal sample of Pb1-x-yGdxCuyS, recorded in the orientation <001>ǁ→H0 (fmw = 9419±1 MHz, spectra of group (a) were obtained at Pmw = 5 mW, spectra of group (b) – at T = 14 K).

Жүктеу (436KB)
Метадеректер
4. Fig. 3. Angular dependences of the resonance values ​​of the external magnetic field in the studied Pb1-x-yGdxCuyS sample, calculated with the spin Hamiltonian (1): T = 5 K, fmw = 9419 MHz, Pmw = 0.05 mW.

Жүктеу (377KB)
Метадеректер
5. Fig. 4. The result of the simulation of the EPR spectrum of the Pb1-x-yGdxCuyS sample (T = 15 K, f = 9418.7 MHz, H0 ǁ <001>).

Жүктеу (278KB)
Метадеректер

© Russian Academy of Sciences, 2024