Crossover from lattice to plasmonic polarons of a spin-polarised electron gas in ferromagnetic EuO

被引：42

作者：

Riley, J. M. ^{[1
,2
]}

Caruso, F. ^{[3
,4
,5
]}

Verdi, C. ^{[3
]}

Duffy, L. B. ^{[6
,7
]}

Watson, M. D. ^{[1
,2
]}

Bawden, L. ^{[1
]}

Volckaert, K. ^{[1
]}

van der Laan, G. ^{[2
]}

Hesjedal, T. ^{[6
]}

Hoesch, M. ^{[2
,8
]}

Giustino, F. ^{[3
,9
]}

King, P. D. C. ^{[1
]}

机构：

[1] Univ St Andrews, Sch Phys & Astron, SUPA, St Andrews KY16 9SS, Fife, Scotland

[2] Diamond Light Source, Harwell Campus, Didcot OX11 0DE, Oxon, England

[3] Univ Oxford, Dept Mat, Parks Rd, Oxford OX1 3PH, England

[4] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany

[5] Humboldt Univ, IRIS Adlershof, D-12489 Berlin, Germany

[6] Univ Oxford, Dept Phys, Oxford OX1 3PU, England

[7] Rutherford Appleton Lab, ISIS, STFC, Didcot OX11 0QX, Oxon, England

[8] DESY, DESY Photon Sci, D-22603 Hamburg, Germany

[9] Cornell Univ, Dept Mat Sci & Engn, Ithaca, NY 14853 USA

来源：

NATURE COMMUNICATIONS | 2018年 / 9卷

基金：

欧盟地平线“2020”; 英国工程与自然科学研究理事会; 英国科学技术设施理事会;

关键词：

D O I：

10.1038/s41467-018-04749-w

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Strong many-body interactions in solids yield a host of fascinating and potentially useful physical properties. Here, from angle-resolved photoemission experiments and ab initio many-body calculations, we demonstrate how a strong coupling of conduction electrons with collective plasmon excitations of their own Fermi sea leads to the formation of plasmonic polarons in the doped ferromagnetic semiconductor EuO. We observe how these exhibit a significant tunability with charge carrier doping, leading to a polaronic liquid that is qualitatively distinct from its more conventional lattice-dominated analogue. Our study thus suggests powerful opportunities for tailoring quantum many-body interactions in solids via dilute charge carrier doping.

引用

页数：8

共 54 条

[1] Charge ordering and polaron formation in the magnetoresistive oxide La0.7Ca0.3MnO3 [J].

Adams, CP ;

Lynn, JW ;

Mukovskii, YM ;

Arsenov, AA ;

Shulyatev, DA .

PHYSICAL REVIEW LETTERS, 2000, 85 (18) :3954-3957

[2] Small adiabatic polaron with a long-range electron-phonon interaction [J].

Alexandrov, AS ;

Yavidov, BY .

PHYSICAL REVIEW B, 2004, 69 (07)

[3]

[Anonymous], 2000, Physics of Solids and Liquids

[4] Multiple plasmon satellites in Na and Al spectral functions from ab initio cumulant expansion [J].

Aryasetiawan, F ;

Hedin, L ;

Karlsson, K .

PHYSICAL REVIEW LETTERS, 1996, 77 (11) :2268-2271

[5] An ultra-compact, high-throughput molecular beam epitaxy growth system [J].

Baker, A. A. ;

Braun, W. ;

Gassler, G. ;

Rembold, S. ;

Fischer, A. ;

Hesjedal, T. .

REVIEW OF SCIENTIFIC INSTRUMENTS, 2015, 86 (04)

[6] ON MAGNETIC RED SHIFT OF ABSORPTION-EDGE IN EUO [J].

BEBENIN, NG .

SOLID STATE COMMUNICATIONS, 1985, 55 (09) :823-825

[7] PROJECTOR AUGMENTED-WAVE METHOD [J].

BLOCHL, PE .

PHYSICAL REVIEW B, 1994, 50 (24) :17953-17979

[8] Phase transition in the localized ferromagnet EuO probed by μSR [J].

Blundell, S. J. ;

Lancaster, T. ;

Pratt, F. L. ;

Baker, P. J. ;

Hayes, W. ;

Ansermet, J. -P. ;

Comment, A. .

PHYSICAL REVIEW B, 2010, 81 (09)

[9] Observation of Plasmarons in Quasi-Freestanding Doped Graphene [J].

Bostwick, Aaron ;

Speck, Florian ;

Seyller, Thomas ;

Horn, Karsten ;

Polini, Marco ;

Asgari, Reza ;

MacDonald, Allan H. ;

Rotenberg, Eli .

SCIENCE, 2010, 328 (5981) :999-1002

[10] Polaronic metal state at the LaAlO3/SrTiO3 interface [J].

Cancellieri, C. ;

Mishchenko, A. S. ;

Aschauer, U. ;

Filippetti, A. ;

Faber, C. ;

Barisic, O. S. ;

Rogalev, V. A. ;

Schmitt, T. ;

Nagaosa, N. ;

Strocov, V. N. .

NATURE COMMUNICATIONS, 2016, 7

← 1 2 3 4 5 6 →