Measurement of interlayer spin diffusion in the organic conductor κ-(BEDT-TTF) 2Cu[N(CN) 2]X, X = Cl, Br

Ágnes Antal, T. Fehér, Bálint Náfradi, Richard Gaál, László Forró, A. Jánossy

Research output: Article

8 Citations (Scopus)

Abstract

In organic conductors the overlap integral between layers is small, in-plane momentum scattering is rapid and transport perpendicular to the layers is expected to be blocked. We present a high frequency conduction electron spin resonance (CESR) study in the layered organic metals κ-(BEDT-TTF) 2Cu[N(CN) 2]X, X = Cl, Br, which verifies that the inter-layer spin hopping is effectively blocked. The method relies on resolving the CESR lines of adjacent layers in which the orientation of the g-factor tensors differs. We find that at ambient pressure and in the metallic phase the electron spin diffusion is two dimensional in both the X = Cl and Br compounds, i.e. electrons diffuse longer than the spin lifetime within a single molecular layer without inter-layer hopping. Application of pressure at 250 K increases rapidly the inter-layer hopping rate of spins.

Original languageEnglish
JournalPhysica B: Condensed Matter
Volume405
Issue number11 SUPPL.
DOIs
Publication statusPublished - jún. 1 2010

Fingerprint

Organic conductors
Paramagnetic resonance
interlayers
conductors
Intermetallics
Tensors
Momentum
Metals
Scattering
Electrons
conduction electrons
electron paramagnetic resonance
BEDT-TTF
resonance lines
electron spin
intermetallics
tensors
momentum
life (durability)
scattering

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Cite this

Measurement of interlayer spin diffusion in the organic conductor κ-(BEDT-TTF) 2Cu[N(CN) 2]X, X = Cl, Br. / Antal, Ágnes; Fehér, T.; Náfradi, Bálint; Gaál, Richard; Forró, László; Jánossy, A.

In: Physica B: Condensed Matter, Vol. 405, No. 11 SUPPL., 01.06.2010.

Research output: Article

Antal, Ágnes ; Fehér, T. ; Náfradi, Bálint ; Gaál, Richard ; Forró, László ; Jánossy, A. / Measurement of interlayer spin diffusion in the organic conductor κ-(BEDT-TTF) 2Cu[N(CN) 2]X, X = Cl, Br. In: Physica B: Condensed Matter. 2010 ; Vol. 405, No. 11 SUPPL.
@article{96f4f594406a4014b740ffdeffd160c3,
title = "Measurement of interlayer spin diffusion in the organic conductor κ-(BEDT-TTF) 2Cu[N(CN) 2]X, X = Cl, Br",
abstract = "In organic conductors the overlap integral between layers is small, in-plane momentum scattering is rapid and transport perpendicular to the layers is expected to be blocked. We present a high frequency conduction electron spin resonance (CESR) study in the layered organic metals κ-(BEDT-TTF) 2Cu[N(CN) 2]X, X = Cl, Br, which verifies that the inter-layer spin hopping is effectively blocked. The method relies on resolving the CESR lines of adjacent layers in which the orientation of the g-factor tensors differs. We find that at ambient pressure and in the metallic phase the electron spin diffusion is two dimensional in both the X = Cl and Br compounds, i.e. electrons diffuse longer than the spin lifetime within a single molecular layer without inter-layer hopping. Application of pressure at 250 K increases rapidly the inter-layer hopping rate of spins.",
keywords = "Anisotropic, BEDT-TTF, CESR, Conduction electron spin resonance, ET, Layered, Organic conductor, Quasi-two-dimensional, Spin lifetime, Spin transport, Spintronics",
author = "{\'A}gnes Antal and T. Feh{\'e}r and B{\'a}lint N{\'a}fradi and Richard Ga{\'a}l and L{\'a}szl{\'o} Forr{\'o} and A. J{\'a}nossy",
year = "2010",
month = "6",
day = "1",
doi = "10.1016/j.physb.2009.11.024",
language = "English",
volume = "405",
journal = "Physica B: Condensed Matter",
issn = "0921-4526",
publisher = "Elsevier",
number = "11 SUPPL.",

}

TY - JOUR

T1 - Measurement of interlayer spin diffusion in the organic conductor κ-(BEDT-TTF) 2Cu[N(CN) 2]X, X = Cl, Br

AU - Antal, Ágnes

AU - Fehér, T.

AU - Náfradi, Bálint

AU - Gaál, Richard

AU - Forró, László

AU - Jánossy, A.

PY - 2010/6/1

Y1 - 2010/6/1

N2 - In organic conductors the overlap integral between layers is small, in-plane momentum scattering is rapid and transport perpendicular to the layers is expected to be blocked. We present a high frequency conduction electron spin resonance (CESR) study in the layered organic metals κ-(BEDT-TTF) 2Cu[N(CN) 2]X, X = Cl, Br, which verifies that the inter-layer spin hopping is effectively blocked. The method relies on resolving the CESR lines of adjacent layers in which the orientation of the g-factor tensors differs. We find that at ambient pressure and in the metallic phase the electron spin diffusion is two dimensional in both the X = Cl and Br compounds, i.e. electrons diffuse longer than the spin lifetime within a single molecular layer without inter-layer hopping. Application of pressure at 250 K increases rapidly the inter-layer hopping rate of spins.

AB - In organic conductors the overlap integral between layers is small, in-plane momentum scattering is rapid and transport perpendicular to the layers is expected to be blocked. We present a high frequency conduction electron spin resonance (CESR) study in the layered organic metals κ-(BEDT-TTF) 2Cu[N(CN) 2]X, X = Cl, Br, which verifies that the inter-layer spin hopping is effectively blocked. The method relies on resolving the CESR lines of adjacent layers in which the orientation of the g-factor tensors differs. We find that at ambient pressure and in the metallic phase the electron spin diffusion is two dimensional in both the X = Cl and Br compounds, i.e. electrons diffuse longer than the spin lifetime within a single molecular layer without inter-layer hopping. Application of pressure at 250 K increases rapidly the inter-layer hopping rate of spins.

KW - Anisotropic

KW - BEDT-TTF

KW - CESR

KW - Conduction electron spin resonance

KW - ET

KW - Layered

KW - Organic conductor

KW - Quasi-two-dimensional

KW - Spin lifetime

KW - Spin transport

KW - Spintronics

UR - http://www.scopus.com/inward/record.url?scp=80052416941&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=80052416941&partnerID=8YFLogxK

U2 - 10.1016/j.physb.2009.11.024

DO - 10.1016/j.physb.2009.11.024

M3 - Article

AN - SCOPUS:80052416941

VL - 405

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

SN - 0921-4526

IS - 11 SUPPL.

ER -