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Title: Resonant Inelastic X-Ray Scattering in Metals: A Diagrammatic Approach

Abstract

We create a formalism to explore the Resonant Inelastic X-ray Scattering (RIXS) response in metals based on the diagrammatic expansion for its cross section. The standard method to the solution of the RIXS problem relies on two key approximations: short-range potentials and non-interacting conduction electrons. Yet, these approximations are inaccurate for charged particles in metals, where the long-range Coulomb interaction and dynamic screening effects are very important. Here, we study how to extract important information about collective excitations in the Coulomb plasma, plasmons and electron-hole pairs, from RIXS data. We find that single- and multi-plasmon excitations can easily be distinguished by positions of the corresponding peaks, singularities, and their intensities. We also discuss the hybrid processes, where plasmon emission is accompanied by excitation of electron-hole pairs, and study how they manifest themselves.

Authors:
ORCiD logo [1];  [1];  [2];  [2]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States)
  2. Univ. of Massachusetts, Amherst, MA (United States)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1573866
Alternate Identifier(s):
OSTI ID: 1571406
Report Number(s):
BNL-212219-2019-JAAM
Journal ID: ISSN 2643--1564
Grant/Contract Number:  
SC0012704
Resource Type:
Published Article
Journal Name:
Physical Review Research
Additional Journal Information:
Journal Volume: 1; Journal Issue: 3; Journal ID: ISSN 2643--1564
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Tsvelik, Alexei M., Konik, R. M., Prokof'ev, N. V., and Tupitsyn, I. S. Resonant Inelastic X-Ray Scattering in Metals: A Diagrammatic Approach. United States: N. p., 2019. Web. doi:10.1103/PhysRevResearch.1.033093.
Tsvelik, Alexei M., Konik, R. M., Prokof'ev, N. V., & Tupitsyn, I. S. Resonant Inelastic X-Ray Scattering in Metals: A Diagrammatic Approach. United States. doi:10.1103/PhysRevResearch.1.033093.
Tsvelik, Alexei M., Konik, R. M., Prokof'ev, N. V., and Tupitsyn, I. S. Tue . "Resonant Inelastic X-Ray Scattering in Metals: A Diagrammatic Approach". United States. doi:10.1103/PhysRevResearch.1.033093.
@article{osti_1573866,
title = {Resonant Inelastic X-Ray Scattering in Metals: A Diagrammatic Approach},
author = {Tsvelik, Alexei M. and Konik, R. M. and Prokof'ev, N. V. and Tupitsyn, I. S.},
abstractNote = {We create a formalism to explore the Resonant Inelastic X-ray Scattering (RIXS) response in metals based on the diagrammatic expansion for its cross section. The standard method to the solution of the RIXS problem relies on two key approximations: short-range potentials and non-interacting conduction electrons. Yet, these approximations are inaccurate for charged particles in metals, where the long-range Coulomb interaction and dynamic screening effects are very important. Here, we study how to extract important information about collective excitations in the Coulomb plasma, plasmons and electron-hole pairs, from RIXS data. We find that single- and multi-plasmon excitations can easily be distinguished by positions of the corresponding peaks, singularities, and their intensities. We also discuss the hybrid processes, where plasmon emission is accompanied by excitation of electron-hole pairs, and study how they manifest themselves.},
doi = {10.1103/PhysRevResearch.1.033093},
journal = {Physical Review Research},
number = 3,
volume = 1,
place = {United States},
year = {2019},
month = {10}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1103/PhysRevResearch.1.033093

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