English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Tracking Primary Thermalization Events in Graphene with Photoemission at Extreme Time Scales

Gierz, I., Calegari, F., Aeschlimann, S., Chavez Cervantes, M., Cacho, C., Chapman, R. T., et al. (2015). Tracking Primary Thermalization Events in Graphene with Photoemission at Extreme Time Scales. Physical Review Letters, 115(8): 086803. doi:10.1103/PhysRevLett.115.086803.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0028-1AA7-9 Version Permalink: http://hdl.handle.net/21.11116/0000-0003-58C0-1
Genre: Journal Article

Files

show Files
hide Files
:
1506.00120.pdf (Preprint), 2MB
Name:
1506.00120.pdf
Description:
File downloaded from arXiv at 2015-08-03 14:58
Visibility:
Public
MIME-Type / Checksum:
application/pdf / [MD5]
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
:
PhysRevLett.115.086803.pdf (Publisher version), 405KB
Name:
PhysRevLett.115.086803.pdf
Description:
-
Visibility:
Public
MIME-Type / Checksum:
application/pdf / [MD5]
Technical Metadata:
Copyright Date:
2015
Copyright Info:
© American Physical Society
License:
-
:
SupInf_IG.pdf (Supplementary material), 2MB
 
File Permalink:
-
Name:
SupInf_IG.pdf
Description:
-
Visibility:
Private
MIME-Type / Checksum:
application/pdf
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
License:
-

Locators

show
hide
Description:
-
Locator:
https://arxiv.org/abs/1506.00120 (Preprint)
Description:
-

Creators

show
hide
 Creators:
Gierz, Isabella1, Author              
Calegari, Francesca2, Author              
Aeschlimann, Sven1, Author              
Chavez Cervantes, Mariana1, Author              
Cacho, C.3, Author
Chapman, R. T.3, Author
Springate, E.3, Author
Link, S.4, Author
Starke, U.4, Author
Ast, C. R.4, Author
Cavalleri, Andrea2, 5, Author              
Affiliations:
1Ultrafast Electron Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_1938295              
2Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_1938293              
3Central Laser Facility, STFC Rutherford Appleton Laboratory, Harwell, United Kingdom, ou_persistent22              
4Max Planck Institute for Solid State Research, Stuttgart, Germany, ou_persistent22              
5Department of Physics, Clarendon Laboratory, University of Oxford, ou_persistent22              

Content

show
hide
Free keywords: Condensed Matter; Materials Science; Mesoscale and Nanoscale Physics; PACS numbers: 73.22.Pr, 78.47.J-, 79.60.-i
 Abstract: Direct and inverse Auger scattering are amongst the primary processes that mediate the thermalization of hot carriers in semiconductors. These two processes involve the annihilation or generation of an electron-hole pair by exchanging energy with a third carrier, which is either accelerated or decelerated. Inverse Auger scattering is generally suppressed, as the decelerated carriers must have excess energies higher than the band gap itself. In graphene, which is gapless, inverse Auger scattering is, instead, predicted to be dominant at the earliest time delays. Here, <8  fs extreme-ultraviolet pulses are used to detect this imbalance, tracking both the number of excited electrons and their kinetic energy with time-and angle-resolved photoemission spectroscopy. Over a time window of approximately 25 fs after absorption of the pump pulse, we observe an increase in conduction band carrier density and a simultaneous decrease of the average carrier kinetic energy, revealing that relaxation is in fact dominated by inverse Auger scattering. Measurements of carrier scattering at extreme time scales by photoemission will serve as a guide to ultrafast control of electronic properties in solids for petahertz electronics.

Details

show
hide
Language(s): eng - English
 Dates: 2015-05-302015-06-032015-08-212015-08-21
 Publication Status: Published in print
 Pages: 5
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: arXiv: 1506.00120
DOI: 10.1103/PhysRevLett.115.086803
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Physical Review Letters
  Abbreviation : Phys. Rev. Lett.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Woodbury, N.Y. : American Physical Society
Pages: - Volume / Issue: 115 (8) Sequence Number: 086803 Start / End Page: - Identifier: ISSN: 0031-9007
CoNE: /journals/resource/954925433406_1