Spin coherence and dephasing of localized electrons in monolayer MoS2

Yang, Luyi; Chen, Weibing; McCreary, Kathleen M.; Jonker, Berend T.; Lou, Jun; Crooker, Scott A.

doi:10.1021/acs.nanolett.5b03771

Title: Spin coherence and dephasing of localized electrons in monolayer MoS₂

Journal Article · Tue Nov 10 00:00:00 EST 2015 · Nano Letters

DOI:https://doi.org/10.1021/acs.nanolett.5b03771· OSTI ID:1334146

Yang, Luyi ^[1]; Chen, Weibing ^[2]; McCreary, Kathleen M. ^[3]; Jonker, Berend T. ^[3]; Lou, Jun ^[2]; Crooker, Scott A. ^[1]

National High Magnetic Field Lab., Los Alamos, NM (United States)
Rice Univ., Houston, TX (United States)
Naval Research Lab., Washington, D.C. (United States)

Here, we report a systematic study of coherent spin precession and spin dephasing in electron-doped monolayer MoS₂. Using time-resolved Kerr rotation spectroscopy and applied in-plane magnetic fields, a nanosecond time scale Larmor spin precession signal commensurate with g-factor |g₀| ≃ 1.86 is observed in several different MoS₂ samples grown by chemical vapor deposition. The dephasing rate of this oscillatory signal increases linearly with magnetic field, suggesting that the coherence arises from a subensemble of localized electron spins having an inhomogeneously broadened distribution of g-factors, g₀ + Δg. In contrast to g₀, Δg is sample-dependent and ranges from 0.042 to 0.115.

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Research Organization:: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC52-06NA25396

OSTI ID:: 1334146

Report Number(s):: LA-UR-15-28148

Journal Information:: Nano Letters, Vol. 15, Issue 12; ISSN 1530-6984

Publisher:: American Chemical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 44 works

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Interplay of valley polarization and dynamic nuclear polarization in 2D transition metal dichalcogenides Sharma, Girish; Economou, Sophia E.; Barnes, Edwin Physical Review B, Vol. 96, Issue 12 https://doi.org/10.1103/physrevb.96.125201	journal	September 2017
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