| 000 | 03584nlm1a2200529 4500 | ||
|---|---|---|---|
| 001 | 664410 | ||
| 005 | 20231030041928.0 | ||
| 035 | _a(RuTPU)RU\TPU\network\35594 | ||
| 035 | _aRU\TPU\network\35410 | ||
| 090 | _a664410 | ||
| 100 | _a20210413a2021 k y0engy50 ba | ||
| 101 | 0 | _aeng | |
| 135 | _adrcn ---uucaa | ||
| 181 | 0 | _ai | |
| 182 | 0 | _ab | |
| 200 | 1 |
_aEvidence for a spin acoustic surface plasmon from inelastic atom scattering _fG. Benedek, M. Bernasconi, D. Campi [et al.] |
|
| 203 |
_aText _celectronic |
||
| 300 | _aTitle screen | ||
| 320 | _a[References: 84 tit.] | ||
| 330 | _aClosed-shell atoms scattered from a metal surface exchange energy and momentum with surface phonons mostly via the interposed surface valence electrons, i.e., via the creation of virtual electron-hole pairs. The latter can then decay into surface phonons via electron-phonon interaction, as well as into acoustic surface plasmons (ASPs). While the first channel is the basis of the current inelastic atom scattering (IAS) surface-phonon spectroscopy, no attempt to observe ASPs with IAS has been made so far. In this study we provide evidence of ASP in Ni(111) with both Ne atom scattering and He atom scattering. While the former measurements confirm and extend so far unexplained data, the latter illustrate the coupling of ASP with phonons inside the surface-projected phonon continuum, leading to a substantial reduction of the ASP velocity and possibly to avoided crossing with the optical surface phonon branches. The analysis is substantiated by a self-consistent calculation of the surface response function to atom collisions and of the first-principle surface-phonon dynamics of Ni(111). It is shown that in Ni(111) ASP originate from the majority-spin Shockley surface state and are therefore collective oscillation of surface electrons with the same spin, i.e. it represents a new kind of collective quasiparticle: a Spin Acoustic Surface Plasmon (SASP). | ||
| 461 | _tScientific Reports | ||
| 463 |
_tVol. 11, iss. 1 _v[1506, 12 p.] _d2021 |
||
| 610 | 1 | _aэлектронный ресурс | |
| 610 | 1 | _aтруды учёных ТПУ | |
| 610 | 1 | _acondensed-matter physics | |
| 610 | 1 | _aelectronic properties and materials | |
| 610 | 1 | _aphysics | |
| 610 | 1 | _aконденсированные состояния | |
| 610 | 1 | _aэлектронные свойства | |
| 610 | 1 | _aэлектронные материалы | |
| 701 | 1 |
_aBenedek _bG. _gGiorgio |
|
| 701 | 1 |
_aBernasconi _bM. |
|
| 701 | 1 |
_aCampi _bD. _gDavide |
|
| 701 | 1 |
_aSilkin _bI. V. _gIgor Vyacheslavovich |
|
| 701 | 1 |
_aChernov _bI. P. _cDoctor of Physical and Mathematical Sciences (DSc), Professor of the Department of General Physics of Tomsk Polytechnic University (TPU) _f1935- _gIvan Petrovich _2stltpush _3(RuTPU)RU\TPU\pers\30202 |
|
| 701 | 1 |
_aSilkin _bV. M. _gVyacheslav Mikhaylovich |
|
| 701 | 1 |
_aChulkov _bE. V. _gEvgeny Vladimirovich |
|
| 701 | 1 |
_aEchenique _bP. M. _gPablo |
|
| 701 | 1 |
_aToennies _bJ. P. |
|
| 701 | 1 |
_aAnemone _bG. _gGloria |
|
| 701 | 1 |
_aAl _bT. A. _gTaleb Amjad |
|
| 701 | 1 |
_aMiranda _bR. P. _gRafael |
|
| 701 | 1 |
_aFarias _bD. L. _gDaniel |
|
| 712 | 0 | 2 |
_aНациональный исследовательский Томский политехнический университет _bИнженерная школа ядерных технологий _bОтделение экспериментальной физики _h7865 _2stltpush _3(RuTPU)RU\TPU\col\23549 |
| 801 | 2 |
_aRU _b63413507 _c20210413 _gRCR |
|
| 856 | 4 | _uhttps://doi.org/10.1038/s41598-021-81018-9 | |
| 942 | _cCF | ||