---
_id: '388'
abstract:
- lang: eng
text: We use ultrafast optical spectroscopy to observe binding of charged single-particle
excitations (SE) in the magnetically frustrated Mott insulator Na2IrO3. Above
the antiferromagnetic ordering temperature (TN) the system response is due to
both Hubbard excitons (HE) and their constituent unpaired SE. The SE response
becomes strongly suppressed immediately below TN. We argue that this increase
in binding energy is due to a unique interplay between the frustrated Kitaev and
the weak Heisenberg-type ordering term in the Hamiltonian, mediating an effective
interaction between the spin-singlet SE. This interaction grows with distance
causing the SE to become trapped in the HE, similar to quark confinement inside
hadrons. This binding of charged particles, induced by magnetic ordering, is a
result of a confinement-deconfinement transition of spin excitations. This observation
provides evidence for spin liquid type behavior which is expected in Na2IrO3.
article_processing_charge: No
article_type: original
author:
- first_name: Zhanybek
full_name: Alpichshev, Zhanybek
id: 45E67A2A-F248-11E8-B48F-1D18A9856A87
last_name: Alpichshev
orcid: 0000-0002-7183-5203
- first_name: Fahad
full_name: Mahmood, Fahad
last_name: Mahmood
- first_name: Gang
full_name: Cao, Gang
last_name: Cao
- first_name: Nuh
full_name: Gedik, Nuh
last_name: Gedik
citation:
ama: Alpichshev Z, Mahmood F, Cao G, Gedik N. Confinement deconfinement transition
as an indication of spin liquid type behavior in Na2IrO3. Physical Review Letters.
2015;114(1). doi:10.1103/PhysRevLett.114.017203
apa: Alpichshev, Z., Mahmood, F., Cao, G., & Gedik, N. (2015). Confinement deconfinement
transition as an indication of spin liquid type behavior in Na2IrO3. Physical
Review Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.114.017203
chicago: Alpichshev, Zhanybek, Fahad Mahmood, Gang Cao, and Nuh Gedik. “Confinement
Deconfinement Transition as an Indication of Spin Liquid Type Behavior in Na2IrO3.”
Physical Review Letters. American Physical Society, 2015. https://doi.org/10.1103/PhysRevLett.114.017203.
ieee: Z. Alpichshev, F. Mahmood, G. Cao, and N. Gedik, “Confinement deconfinement
transition as an indication of spin liquid type behavior in Na2IrO3,” Physical
Review Letters, vol. 114, no. 1. American Physical Society, 2015.
ista: Alpichshev Z, Mahmood F, Cao G, Gedik N. 2015. Confinement deconfinement transition
as an indication of spin liquid type behavior in Na2IrO3. Physical Review Letters.
114(1).
mla: Alpichshev, Zhanybek, et al. “Confinement Deconfinement Transition as an Indication
of Spin Liquid Type Behavior in Na2IrO3.” Physical Review Letters, vol.
114, no. 1, American Physical Society, 2015, doi:10.1103/PhysRevLett.114.017203.
short: Z. Alpichshev, F. Mahmood, G. Cao, N. Gedik, Physical Review Letters 114
(2015).
date_created: 2018-12-11T11:46:11Z
date_published: 2015-07-07T00:00:00Z
date_updated: 2021-01-12T07:52:54Z
day: '07'
doi: 10.1103/PhysRevLett.114.017203
extern: '1'
intvolume: ' 114'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://dspace.mit.edu/handle/1721.1/92979
month: '07'
oa: 1
oa_version: Published Version
publication: Physical Review Letters
publication_status: published
publisher: American Physical Society
publist_id: '7441'
quality_controlled: '1'
status: public
title: Confinement deconfinement transition as an indication of spin liquid type behavior
in Na2IrO3
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 114
year: '2015'
...