SPIN FLUCTUATIONS IN TCO2 STUDIED BY RESISTIVITY AND THERMOPOWER EXPERIMENTS (T = Y, LU, SC, HF, ZR, CE) / BARANOV N,BAUER E,GRATZ E,HAUSER R,MARKOSYAN A,RESEL R // INTERNATIONAL JOURNAL OF MODERN PHYSICS B. - 1993. - V. 7, l. 1-3, 1. - P. 370-373.

ISSN/EISSN:

0217-9792 / нет данных

Type:

Article; Proceedings Paper

Abstract:

The temperature dependence of the resistivity and the thermopower in the region from 4.2K up to 1000K for the six isostructural paramagnetic compounds TCo2 (T = Y,Lu,Sc,HfZr,Ce) is studied. The resistivity rho(T) follows a T2 dependence at low temperatures in all these compounds. Plotting the A values into an A vs. gamma2 diagram shows that YCo2, LuCo2, and ScCo2 are spinfluctuation systems (A and gamma denote the coefficients in rho(T) = rho0 + AT2 and that of the electronic specific heat, respectively) HfCo2 and ZrCo2 do not fit into this general tendency in the (A, gamma2)-diagram. The temperature dependent thermopower S(T) in YCo2, LuCo2 and SCCo2 exhibits a pronounced minimum in the low temperature region. These minima are obviously connected with the existence of spin fluctuations (paramagnon-drag). Spin fluctuations in HfCo2 and ZrCo2 are less important. This we conclude also from the ten times smaller A-values and the missing minimum in the thermopower at low temperatures.

Author keywords:

MAGNETIC-PROPERTIES; ELECTRONIC-STRUCTURE

DOI:

10.1142/S0217979293000780

Web of Science ID:

ISI:A1993LE72300078

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	JAN
Note	INTERNATIONAL CONF ON THE PHYSICS OF TRANSITION METALS ( ICPTM ), TECH UNIV DARMSTADT, DARMSTADT, GERMANY, JUL 20-24, 1992
Organization	DEUT FORSCHUNGSGEMEINSCH
Publisher	WORLD SCIENTIFIC PUBL CO PTE LTD
Address	JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 9128, SINGAPORE
Language	English
Keywords-Plus	MAGNETIC-PROPERTIES; ELECTRONIC-STRUCTURE
Research-Areas	Physics
Web-of-Science-Categories	Physics, Applied; Physics, Condensed Matter; Physics, Mathematical
ResearcherID-Numbers	Baranov, Nikolai/J-5042-2013 Resel, Roland/E-4059-2016
ORCID-Numbers	Baranov, Nikolai/0000-0002-9720-5314 Resel, Roland/0000-0003-0079-3525
Number-of-Cited-References	13
Usage-Count-Since-2013	3
Journal-ISO	Int. J. Mod. Phys. B
Doc-Delivery-Number	LE723