Observation of a Ferromagnetic-to-Paramagnetic Phase Transition on a Ferromagnetic Surface Using Spin-Polarized Photoelectron Diffraction: Gd(0001)

Tober, E. D.; Palomares, F. J.; Ynzunza, R. X.; Denecke, R.; Morais, J.; Wang, Z.; Bino, G.; Liesegang, J.; Hussain, Zahid; Fadley, C. S.

doi:10.1103/physrevlett.81.2360

Cited by 41 publications

(31 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This latter transition is coined extraordinary transition. The possible existence of a magnetic surface transition at temperatures higher than the bulk critical temperature has been suggested to exist for various compounds as for example Gd [61,62,63,64], Tb [65,66], FeNi 3 [67], NiO [68,69], NbSe 2 [70] or Ni-Al alloys [71]. However, the experimental situation is usually not very clear.…”

Section: The Surface Universality Classesmentioning

confidence: 91%

Critical phenomena at perfect and non-perfect surfaces

Pleimling¹

2004

J. Phys. A: Math. Gen.

100

135

View full text Add to dashboard Cite

Abstract. In the past perfect surfaces have been shown to yield a local critical behaviour that differs from the bulk critical behaviour. On the other hand surface defects, whether they are of natural origin or created artificially, are known to modify local quantities. It is therefore important to clarify whether these defects are relevant or irrelevant for the surface critical behaviour.The purpose of this review is two-fold. In the first part we summarise some of the important results on surface criticality at perfect surfaces. Special attention is thereby paid to new developments as for example the study of surface critical behaviour in systems with competing interactions or of surface critical dynamics. In the second part the effect of surface defects (presence of edges, steps, quenched randomness, lines of adatoms, regular geometric patterns) on local critical behaviour in semi-infinite systems and in thin films is discussed in detail. Whereas most of the defects commonly encountered are shown to be irrelevant, some notable exceptions are highlighted. It is shown furthermore that under certain circumstances non-universal local critical behaviour may be observed at surfaces.

show abstract

Section: The Surface Universality Classesmentioning

confidence: 91%

Critical phenomena at perfect and non-perfect surfaces

Pleimling¹

2004

J. Phys. A: Math. Gen.

100

135

View full text Add to dashboard Cite

show abstract

“…For the FM hcp Gd, an enhancement of its Curie temperature at the (0001) surface over the bulk value was observed [140]. Theoretical explanation of the latter fact was provided 29 F o r P e e r R e v i e w O n l y by total-energy calculations using an LSDA+U approach [141].…”

Section: Surfaces Of Ferromagnetsmentioning

confidence: 99%

Exchange interactions, spin waves, and transition temperatures in itinerant magnets

Turek

Kudrnovský

Drchal

et al. 2006

Philosophical Magazine

144

128

View full text Add to dashboard Cite

“…Normal detectors do not discriminate between spin polarization of the photoelectrons, unless strongly spin-polarized initial states are considered [101,106]. However, the increasing enhancement in photon flux from new generations of synchrotrons and free-electron lasers are making it possible to collect reasonable signals using spin-selective Mott detectors, where the electron detection efficiency is low since spin separation is performed by tiny differences in the angular distribution of Mott scattering of photoelectrons at the detector.…”

Section: Spin Effectsmentioning

confidence: 99%

“…It also provides quantitative information on the magnetic moment of oriented magnetic atoms, and can be used to determine Curie and Néel temperatures near the surface of the material from which the photoelectron originates (these temperatures may differ from the bulk values [106]). …”

Section: Spin Effectsmentioning

confidence: 99%

“…Multiple scattering of the photoelectron introduces additional spin dependence originating in the different scattering properties of electrons polarized either parallel or antiparallel with respect to the magnetic moment of the atoms [53,106]. Besides, spin-orbit coupling effects in photoelectron scattering from solid atoms (Mott scattering) can play an important role even in the VUV region.…”

Section: Spin Effectsmentioning

confidence: 99%

See 1 more Smart Citation