Magnetic Properties of La<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Sn</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>

Welsh, L. B.; Toxen, A. M.; Gambino, R. J.

doi:10.1103/physrevb.4.2921

Cited by 39 publications

(10 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Indeed, nuclear magnetic resonance experiments showed that for LaT 3 (T = Sn, In, Pb, Tl, etc.) [1,3,26,27] conduction electron-electron correlations have negligible effect in these compounds. In the free conduction electron gas model, the Sommerfeld coefficient for a superconductor is given by γ = (2/3)π 2 k 2 B η F (1−λ), where λ is the electron-phonon coupling parameter.…”

Section: Analysis Of the Gd 3+ Esr In Lainmentioning

confidence: 96%

Electron spin resonance study of the LaIn_3−xSn_xsuperconducting system

Bittar

Adriano

Giles

et al. 2011

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

Abstract. The LaIn 3−x Sn x alloy system is composed of superconducting Pauli paramagnets. For LaIn 3 the superconducting critical temperature T c is approximately 0.7 K and it shows an oscillatory dependence as a function of Sn substitution, presenting its highest value T c ≈ 6.4 K for the LaSn 3 end member.The superconducting state of these materials was characterized as being of the conventional type. We report our results for Gd 3+ electron spin resonance (ESR) measurements in the LaIn 3−x Sn x compounds as a function of x. We show that the effective exchange interaction parameter J f s between the Gd 3+ 4f local moment and the s-like conduction electrons is almost unchanged by Sn substitution and observe microscopically that LaSn 3 is a conventional superconductor.

show abstract

Section: Analysis Of the Gd 3+ Esr In Lainmentioning

confidence: 96%

Electron spin resonance study of the LaIn_3−xSn_xsuperconducting system

Bittar

Adriano

Giles

et al. 2011

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

show abstract

“…5 It is interesting to compare the properties of LaSn 3 and YSn 3 to reveal to which extent the similar valence electron configurations of Y and La influence the details of the electronic structure. 1, [6][7][8][9] The LaX 3 (X = Sn, In, Tl, Pb) series and their alloys show an oscillatory dependence in their bulk properties (superconducting transition temperature, magnetic susceptibility, thermoelectric power factor) as a function of average valence-electron number. [9][10][11][12][13] At first, this behavior was interpreted in a nearly free electron model as a reflection of the Fermi surface crossing the Brillouin zone close to the X point, 9,14 a viewpoint later contested by Grobman.…”

Section: Introductionmentioning

confidence: 99%

Electronic topological transition in LaSn3under pressure

et al. 2012

View full text Add to dashboard Cite

The electronic structure, Fermi surface, and elastic properties of the isostructural and isoelectronic LaSn 3 and YSn 3 intermetallic compounds are studied under pressure within the framework of density functional theory including spin-orbit coupling. The LaSn 3 Fermi surface consists of two sheets, of which the second is very complex. Under pressure a third sheet appears around compression V /V 0 = 0.94, while a small topology change in the second sheet is seen at compression V /V 0 = 0.90. This may be in accordance with the anomalous behavior in the superconducting transition temperature observed in LaSn 3 , which has been suggested to reflect a Fermi surface topological transition, along with a nonmonotonic pressure dependence of the density of states at the Fermi level. The same behavior is not observed in YSn 3 , the Fermi surface of which already includes three sheets at ambient conditions, and the topology remains unchanged under pressure. The reason for the difference in behavior between LaSn 3 and YSn 3 is the role of spin-orbit coupling and the hybridization of La 4f states with the Sn p states in the vicinity of the Fermi level, which is well explained using the band structure calculation. The elastic constants and related mechanical properties are calculated at ambient as well as at elevated pressures. The elastic constants increase with pressure for both compounds and satisfy the conditions for mechanical stability under pressure.

show abstract

“…I n LaSn, and LaAI, the temperature-independent values of KO are +0.64 and +0.056%, respectively [19,211. The relatively small value of K t 1 , in comparison to Ksn = +0.75% and KA1 = +0.16y0 observed in the pure metals Sn and Al, indicates a relatively large proportion of non-s-electrons, i.e.…”

Section: Comparison Of the Results Obtained On Yba13 And Cesnsmentioning

confidence: 99%

“…We again use the data of Welsh et al [19] on LaSn, to determine X4ffrom xexp -xp. The result is shown by the upper curve in Fig.…”

Section: Comparison Of the Results Obtained On Yba13 And Cesnsmentioning

confidence: 99%

Valence Instabilities in CeSn₃ and YbAl₃

Buschow

Goebel

Dormann

1979

Physica Status Solidi (b)

View full text Add to dashboard Cite

The "A1 XMR in YbAI, is studied b y spin echo techniques in the temperature range 4.2 to 300 K. The temperature dependence of the Knight shift exhibits a minimum close t o the temperature where the susceptibility shows a maximum. A comparison is made with NMR and susceptibility data of CeSn,. For CeSn, supplementary susceptibility measurements are made in the range 300 to 650 K. All data are analysed in terms of a two-level model with a nonmagnetic ground state and excited state with a degeneracy of 25 + 1. This excited state, corresponding to the 3f integral valence state, largely determines the magnetic properties of these systems. The quadrupolar splitting of the 27Al NMR in YbAl, is independent of temperature over the whole temperature range considered. Thus, i t is concluded that the presumed change in valence of Yb with temperature does not involve major changes in charge distribution around the Yb atoms.27Al-Kernresonanz in YbAl, wird mit der Spin-Echo-Technik im Temperaturbereich von 4,2 bis 300 K untersucht. Die Temperaturabhangigkeit des Knight-Shift zeigt ein Minimum in der Nahe der Temperatur, wo die Suszeptibilitat ein Maximum zeigt. Ein Vergleich mit NMR und Suszeptibilitatswerten von CeSn, wird gemacht. Fur CeSn, werden zusatzliche Suszeptibilitatsmessungen im Bereich von 300 bis 650 K durchgefuhrt. Alle Wert,e werden mit einem Zwei-Niveau-Model1 mit nichtmagnetischem Grundzustand und angeregtem Zustand mit einer Entartung von 2 5 + 1 analysiert. Dieser angeregte Zustand, der mit dem integralen 3f-Valenzzustand iibereinstimmt, bestimmt hauptsachlich die magnetischen Eigenschaften dieser Systeme. Die Quadrupolaufspaltung der "AI-NMR in YbAI, ist unabhangig von der Temperatur im gesamten betrachtet,en Temperaturbereich. Deshalb wird geschlossen, d a l die vermutete Anderung in der Valenz von Yb mit der Temperatur keine groleren Anderungen in der Ladungsverteilung um die Yb-Atome einschlielt.

show abstract

Magnetic Properties of LaSn3

Cited by 39 publications

References 19 publications

Electron spin resonance study of the LaIn_3−xSn_xsuperconducting system

Electron spin resonance study of the LaIn_3−xSn_xsuperconducting system

Electronic topological transition in LaSn3under pressure

Valence Instabilities in CeSn₃ and YbAl₃

Contact Info

Product

Resources

About

Magnetic Properties of LaSn3

Cited by 39 publications

References 19 publications

Electron spin resonance study of the LaIn3−xSnxsuperconducting system

Electron spin resonance study of the LaIn3−xSnxsuperconducting system

Electronic topological transition in LaSn3under pressure

Valence Instabilities in CeSn3 and YbAl3

Contact Info

Product

Resources

About

Electron spin resonance study of the LaIn_3−xSn_xsuperconducting system

Electron spin resonance study of the LaIn_3−xSn_xsuperconducting system

Valence Instabilities in CeSn₃ and YbAl₃