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Pregled bibliografske jedinice broj: 1112294

Dependence of transport coefficients of Yb(Rh1-xCox)(2)Si-2 intermetallics on temperature and cobalt concentration


Zlatić, Veljko; Stockert, Ulrike
Dependence of transport coefficients of Yb(Rh1-xCox)(2)Si-2 intermetallics on temperature and cobalt concentration // Physical review. B., 101 (2020), 15; 155146, 8 doi:10.1103/PhysRevB.101.155146 (međunarodna recenzija, članak, znanstveni)


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Naslov
Dependence of transport coefficients of Yb(Rh1-xCox)(2)Si-2 intermetallics on temperature and cobalt concentration

Autori
Zlatić, Veljko ; Stockert, Ulrike

Izvornik
Physical review. B. (2469-9950) 101 (2020), 15; 155146, 8

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
transport properties ; Yb(Rh1-xCox)(2)Si-2 ; CEF splitting ; Anderson model

Sažetak
Dependence of transport coefficients of the Yb(Rh1-xCox)(2)Si-2 series of alloys on temperature and cobalt concentration is explained by an asymmetric Anderson model which takes into account the exchange scattering of conduction electrons on ytterbium ions and the splitting of 4f states by the crystalline electric field (CEF). The substitution of rhodium by cobalt is described as an increase of chemical pressure which reduces the exchange coupling and the CEF splitting. The scaling analysis and numerical NCA solution of the model show that the effective degeneracy of the 4f state at a given temperature depends on the relative magnitude of the Kondo scale and the CEF splitting. Thus, we find that dependence of the thermopower, S(T), on temperature and cobalt concentration can be understood as an interplay of quantum fluctuations, driven by the Kondo effect, and thermal fluctuations, which favor a uniform occupation of the CEF states. The theoretical model captures all the qualitative features of the experimental data and it explains the evolution of the shape of S(T) with the increase of cobalt concentration.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekti:
MZO-Ugovor br. 1/2014 - Novi materijali za ultrabrzu elektronsku tehnologiju zasnovanu na efektima elektronskih korelacija u dvodimenzionalnim slojevima (Aviani, Ivica, MZO - Bilateralna suradnja između Hrvatske i SAD-a) ( CroRIS)

Ustanove:
Prirodoslovno-matematički fakultet, Split

Profili:

Avatar Url Veljko Zlatić (autor)

Poveznice na cjeloviti tekst rada:

doi arxiv.org

Citiraj ovu publikaciju:

Zlatić, Veljko; Stockert, Ulrike
Dependence of transport coefficients of Yb(Rh1-xCox)(2)Si-2 intermetallics on temperature and cobalt concentration // Physical review. B., 101 (2020), 15; 155146, 8 doi:10.1103/PhysRevB.101.155146 (međunarodna recenzija, članak, znanstveni)
Zlatić, V. & Stockert, U. (2020) Dependence of transport coefficients of Yb(Rh1-xCox)(2)Si-2 intermetallics on temperature and cobalt concentration. Physical review. B., 101 (15), 155146, 8 doi:10.1103/PhysRevB.101.155146.
@article{article, author = {Zlati\'{c}, Veljko and Stockert, Ulrike}, year = {2020}, pages = {8}, DOI = {10.1103/PhysRevB.101.155146}, chapter = {155146}, keywords = {transport properties, Yb(Rh1-xCox)(2)Si-2, CEF splitting, Anderson model}, journal = {Physical review. B.}, doi = {10.1103/PhysRevB.101.155146}, volume = {101}, number = {15}, issn = {2469-9950}, title = {Dependence of transport coefficients of Yb(Rh1-xCox)(2)Si-2 intermetallics on temperature and cobalt concentration}, keyword = {transport properties, Yb(Rh1-xCox)(2)Si-2, CEF splitting, Anderson model}, chapternumber = {155146} }
@article{article, author = {Zlati\'{c}, Veljko and Stockert, Ulrike}, year = {2020}, pages = {8}, DOI = {10.1103/PhysRevB.101.155146}, chapter = {155146}, keywords = {transport properties, Yb(Rh1-xCox)(2)Si-2, CEF splitting, Anderson model}, journal = {Physical review. B.}, doi = {10.1103/PhysRevB.101.155146}, volume = {101}, number = {15}, issn = {2469-9950}, title = {Dependence of transport coefficients of Yb(Rh1-xCox)(2)Si-2 intermetallics on temperature and cobalt concentration}, keyword = {transport properties, Yb(Rh1-xCox)(2)Si-2, CEF splitting, Anderson model}, chapternumber = {155146} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus
  • Nature Index


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