Napredna pretraga

Pregled bibliografske jedinice broj: 379826

Crossover in charge transport from one-dimensional copper-oxygen chains to two-dimensional ladders in (La, Y)(y)(Sr, Ca)(14-y)Cu24O41


Ivek, Tomislav; Vuletić, Tomislav; Korin-Hamzić, Bojana; Milat, Ognjen; Tomić, Silvia; Gorshunov, Boris; Dressel, Martin; Akimitsu, J.; Sugiyama, Y.; Hess, C.; Buechner, B.
Crossover in charge transport from one-dimensional copper-oxygen chains to two-dimensional ladders in (La, Y)(y)(Sr, Ca)(14-y)Cu24O41 // Physical Review B - Condensed Matter and Materials Physics, 78 (2008), 20; 205105-1 (međunarodna recenzija, članak, znanstveni)


Naslov
Crossover in charge transport from one-dimensional copper-oxygen chains to two-dimensional ladders in (La, Y)(y)(Sr, Ca)(14-y)Cu24O41

Autori
Ivek, Tomislav ; Vuletić, Tomislav ; Korin-Hamzić, Bojana ; Milat, Ognjen ; Tomić, Silvia ; Gorshunov, Boris ; Dressel, Martin ; Akimitsu, J. ; Sugiyama, Y. ; Hess, C. ; Buechner, B.

Izvornik
Physical Review B - Condensed Matter and Materials Physics (1098-0121) 78 (2008), 20; 205105-1

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

Ključne riječi
Spin chains; spin ladders; charge density wave; one-dimesnional hopping; dielectric relaxation

Sažetak
The charge transport in the copper-oxygen chain/ladder layers of \laysrca{; ; }; ; is investigated along two crystallographic directions in the temperature range from 50~K to 700~K and for doping levels from $y \approx 6$ (number of holes $n_h <1$) to $y = 0$ (number of holes $n_h = 6$). A crossover from a one-dimensional hopping transport along the chains for $y \geq 3$ to a quasi-two-dimensional charge conduction in the ladder planes for $y \lesssim 2$ is observed. This is attributed to a partial hole transfer from chains to ladders when the hole doping exceeds $n_h \approx 4$ and approaches fully doped value $n_h = 6$. For $y \lesssim 2$ a weak dielectric relaxation at radio-frequencies and a microwave mode are detected, which might be recognized as signatures of a charge-density wave phase developed at short length scales in the ladders planes.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekt / tema
035-0000000-2836 - Jako korelirani anorganski, organski i biomaterijali (Silvia Tomić, )
035-0352843-2844 - Veza strukturnih i fizikalnih svojstava materijala kontrolirane dimenzionalnosti (Ognjen Milat, )

Ustanove
Institut za fiziku, Zagreb

Časopis indeksira:


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