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Ultra-deep optical cooling of coupled nuclear spin-spin and quadrupole reservoirs in a GaAs/(Al,Ga)As quantum well. / Kotur, Mladen; Tolmachev, Daniel O.; Litvyak, Valentina M.; Kavokin, Kirill V.; Suter, Dieter; Yakovlev, Dmitri R.; Bayer, Manfred.

In: Communications Physics, Vol. 4, No. 1, 193, 23.08.2021.

Research output: Contribution to journal › Article › peer-review

Harvard

Kotur, M, Tolmachev, DO, Litvyak, VM, Kavokin, KV, Suter, D, Yakovlev, DR & Bayer, M 2021, 'Ultra-deep optical cooling of coupled nuclear spin-spin and quadrupole reservoirs in a GaAs/(Al,Ga)As quantum well', Communications Physics, vol. 4, no. 1, 193. https://doi.org/10.1038/s42005-021-00681-6

APA

Kotur, M., Tolmachev, D. O., Litvyak, V. M., Kavokin, K. V., Suter, D., Yakovlev, D. R., & Bayer, M. (2021). Ultra-deep optical cooling of coupled nuclear spin-spin and quadrupole reservoirs in a GaAs/(Al,Ga)As quantum well. Communications Physics, 4(1), [193]. https://doi.org/10.1038/s42005-021-00681-6

Vancouver

Kotur M, Tolmachev DO, Litvyak VM, Kavokin KV, Suter D, Yakovlev DR et al. Ultra-deep optical cooling of coupled nuclear spin-spin and quadrupole reservoirs in a GaAs/(Al,Ga)As quantum well. Communications Physics. 2021 Aug 23;4(1). 193. https://doi.org/10.1038/s42005-021-00681-6

Author

Kotur, Mladen ; Tolmachev, Daniel O. ; Litvyak, Valentina M. ; Kavokin, Kirill V. ; Suter, Dieter ; Yakovlev, Dmitri R. ; Bayer, Manfred. / Ultra-deep optical cooling of coupled nuclear spin-spin and quadrupole reservoirs in a GaAs/(Al,Ga)As quantum well. In: Communications Physics. 2021 ; Vol. 4, No. 1.

BibTeX

@article{66f88b24cd6541e783ba49b63f438777,
title = "Ultra-deep optical cooling of coupled nuclear spin-spin and quadrupole reservoirs in a GaAs/(Al,Ga)As quantum well",
abstract = "The physics of interacting nuclear spins in solids is well interpreted within the nuclear spin temperature concept. A common approach to cooling the nuclear spin system is adiabatic demagnetization of the initial, optically created, nuclear spin polarization. Here, the selective cooling of 75As spins by optical pumping followed by adiabatic demagnetization in the rotating frame is realized in a nominally undoped GaAs/(Al,Ga)As quantum well. The lowest nuclear spin temperature achieved is 0.54 μK. The rotation of 6 kG strong Overhauser field at the 75As Larmor frequency of 5.5 MHz is evidenced by the dynamic Hanle effect. Despite the presence of the quadrupole induced nuclear spin splitting, it is shown that the rotating 75As magnetization is uniquely determined by the spin temperature of coupled spin-spin and quadrupole reservoirs. The dependence of heat capacity of these reservoirs on the external magnetic field direction with respect to crystal and structure axes is investigated.",
keywords = "MAGNETIC-RESONANCE, DEMAGNETIZATION, TEMPERATURE",
author = "Mladen Kotur and Tolmachev, {Daniel O.} and Litvyak, {Valentina M.} and Kavokin, {Kirill V.} and Dieter Suter and Yakovlev, {Dmitri R.} and Manfred Bayer",
note = "Publisher Copyright: {\textcopyright} 2021, The Author(s).",
year = "2021",
month = aug,
day = "23",
doi = "10.1038/s42005-021-00681-6",
language = "English",
volume = "4",
journal = "Communications Physics",
issn = "2399-3650",
publisher = "Springer Nature",
number = "1",

}

RIS

TY - JOUR

T1 - Ultra-deep optical cooling of coupled nuclear spin-spin and quadrupole reservoirs in a GaAs/(Al,Ga)As quantum well

AU - Kotur, Mladen

AU - Tolmachev, Daniel O.

AU - Litvyak, Valentina M.

AU - Kavokin, Kirill V.

AU - Suter, Dieter

AU - Yakovlev, Dmitri R.

AU - Bayer, Manfred

N1 - Publisher Copyright: © 2021, The Author(s).

PY - 2021/8/23

Y1 - 2021/8/23

N2 - The physics of interacting nuclear spins in solids is well interpreted within the nuclear spin temperature concept. A common approach to cooling the nuclear spin system is adiabatic demagnetization of the initial, optically created, nuclear spin polarization. Here, the selective cooling of 75As spins by optical pumping followed by adiabatic demagnetization in the rotating frame is realized in a nominally undoped GaAs/(Al,Ga)As quantum well. The lowest nuclear spin temperature achieved is 0.54 μK. The rotation of 6 kG strong Overhauser field at the 75As Larmor frequency of 5.5 MHz is evidenced by the dynamic Hanle effect. Despite the presence of the quadrupole induced nuclear spin splitting, it is shown that the rotating 75As magnetization is uniquely determined by the spin temperature of coupled spin-spin and quadrupole reservoirs. The dependence of heat capacity of these reservoirs on the external magnetic field direction with respect to crystal and structure axes is investigated.

AB - The physics of interacting nuclear spins in solids is well interpreted within the nuclear spin temperature concept. A common approach to cooling the nuclear spin system is adiabatic demagnetization of the initial, optically created, nuclear spin polarization. Here, the selective cooling of 75As spins by optical pumping followed by adiabatic demagnetization in the rotating frame is realized in a nominally undoped GaAs/(Al,Ga)As quantum well. The lowest nuclear spin temperature achieved is 0.54 μK. The rotation of 6 kG strong Overhauser field at the 75As Larmor frequency of 5.5 MHz is evidenced by the dynamic Hanle effect. Despite the presence of the quadrupole induced nuclear spin splitting, it is shown that the rotating 75As magnetization is uniquely determined by the spin temperature of coupled spin-spin and quadrupole reservoirs. The dependence of heat capacity of these reservoirs on the external magnetic field direction with respect to crystal and structure axes is investigated.

KW - MAGNETIC-RESONANCE

KW - DEMAGNETIZATION

KW - TEMPERATURE

UR - http://www.scopus.com/inward/record.url?scp=85113714913&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/b896fbc2-18d6-33bf-beb2-6b43bb81c316/

U2 - 10.1038/s42005-021-00681-6

DO - 10.1038/s42005-021-00681-6

M3 - Article

AN - SCOPUS:85113714913

VL - 4

JO - Communications Physics

JF - Communications Physics

SN - 2399-3650

IS - 1

M1 - 193

ER -

ID: 86056910