Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Distinguishing finite-momentum superconducting pairing states with two-electron photoemission spectroscopy

Journal Article · · Physical Review. B
 [1];  [2];  [1];  [1]
  1. Univ. of Illinois at Urbana-Champaign, IL (United States)
  2. Stanford Univ., CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
+ Show Author Affiliations

Here, we show theoretically that double photoemission (2e-ARPES) may be used to identify the pairing state in superconductors in which the Cooper pairs have a nonzero center-of-mass momentum, qcm. We theoretically evaluate the 2e-ARPES counting rate P(2) for the cases of a dx2-y2-wave superconductor, a pair-density-wave (PDW) phase, and a Fulde-Ferrel-Larkin-Ovchinnikov (FFLO) phase. We show that P(2) provides direct insight into the center-of-mass momentum and spin state of the superconducting condensate, and thus can distinguish between these three different superconducting pairing states. In addition, P(2) can be used to map out the momentum dependence of the superconducting order parameter. Our results identify 2e-ARPES as an ideal tool for identifying and probing qcm ≠ 0 superconducting pairing states in superconductors.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); Gordon and Betty Moore Foundation
Grant/Contract Number:
AC02-76SF00515; SC0021238
OSTI ID:
1867422
Journal Information:
Physical Review. B, Journal Name: Physical Review. B Journal Issue: 6 Vol. 105; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

References (21)

Resonant soft X-ray scattering, stripe order, and the electron spectral function in cuprates journal November 2012
Laser-based double photoemission spectroscopy at surfaces journal February 2020
Imaging Cooper pairing of heavy fermions in CeCoIn5 journal July 2013
Striped superconductors: how spin, charge and superconducting orders intertwine in the cuprates journal November 2009
Superconductivity in a Strong Spin-Exchange Field journal August 1964
Emission of correlated electron pairs following single-photon absorption by solids and surfaces journal October 1998
Two-particle photoemission from strongly correlated systems: A dynamical mean-field approach journal May 2010
Surface state and resonance effects in electron-pair emission from Cu(111) journal September 2011
Electron pair emission from a highly correlated material journal July 2012
Single- or double-electron emission within the Keldysh nonequilibrium Green's function and Feshbach projection operator techniques journal April 2015
Josephson Scanning Tunneling Spectroscopy in d x 2 − y 2 -Wave Superconductors: A Probe for the Nature of the Pseudogap in the Cuprate Superconductors journal July 2019
Auger-Photoelectron Coincidence Measurements in Copper journal December 1978
Two Electron Photoemission in Solids journal September 1998
Spectroscopy of the Electron-Electron Interaction in Solids journal August 2002
Possible Fulde-Ferrell-Larkin-Ovchinnikov Superconducting State in C e C o I n 5 journal October 2003
Photoinduced Emission of Cooper Pairs from Superconductors journal December 2003
Correlation Effects in Two Electron Photoemission journal June 2007
Phase-sensitive tests of the symmetry of the pairing state in the high-temperature superconductors—Evidence for d x 2 − y 2 symmetry journal April 1995
Pairing symmetry in cuprate superconductors journal October 2000
Angle-resolved photoemission studies of the cuprate superconductors journal April 2003
The Physics of Pair-Density Waves: Cuprate Superconductors and Beyond journal March 2020

Similar Records

The Physics of Pair-Density Waves: Cuprate Superconductors and Beyond
Journal Article · Sat Feb 29 23:00:00 EST 2020 · Annual Review of Condensed Matter Physics · OSTI ID:1608438
Reentrant Fulde-Ferrell-Larkin-Ovchinnikov state in small-sized superconductors
Journal Article · Mon Feb 18 23:00:00 EST 2019 · Physical Review B · OSTI ID:1511619

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
FFLO
angle-resolved photoemission spectroscopy
cuprates
high-temperature superconductors
methods in superconductivity
pairing mechanisms
superconducting gap
superconducting order parameter
superconducting phase transition