scholarly journals Nuclear spin temperature reversal via continuous radio-frequency driving

2021 ◽  
Vol 103 (8) ◽  
Author(s):  
Pablo R. Zangara ◽  
Daniela Pagliero ◽  
Ashok Ajoy ◽  
Rodolfo H. Acosta ◽  
Jeffrey A. Reimer ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Nuclear Spin ◽  
Spin Temperature

Radio-frequency-driven nuclear spin diffusion in solids

1989 ◽  
Vol 162 (6) ◽  
pp. 417-423 ◽  
Author(s):  
P. Robyr ◽  
B.H. Meier ◽  
R.R. Ernst
Keyword(s):  
Radio Frequency ◽  
Nuclear Spin ◽  
Spin Diffusion ◽  
Diffusion In Solids

scholarly journals Zeeman Effect of Pure NQR in a Rotating Frame (CW and Pulsed Excitation)

1992 ◽  
Vol 47 (1-2) ◽  
pp. 412-414 ◽  
Author(s):  
G. B. Furman ◽  
I. M. Kadzhaya
Keyword(s):  
Radio Frequency ◽  
Spin System ◽  
Nuclear Spin ◽  
Zeeman Effect ◽  
Rotating Frame ◽  
Pulsed Excitation ◽  
Nuclear Spin System

AbstractThe Zeeman effect in a rotating frame is considered for the case when the quadrupolar nuclear spin system is acted on by two radio-frequency fields.

Nuclear spin temperature of ammonia in Comet 9P/Tempel 1 before and after the Deep Impact event

Icarus ◽  
2007 ◽  
Vol 191 (2) ◽  
pp. 513-516 ◽  
Author(s):  
Hideyo Kawakita ◽  
Emmanuel Jehin ◽  
Jean Manfroid ◽  
Damien Hutsemékers
Keyword(s):  
Nuclear Spin ◽  
Impact Event ◽  
Spin Temperature ◽  
Deep Impact ◽  
Before And After

Nuclear Spin Temperature and Deuterium-to-Hydrogen Ratio of Methane in Comet C/2001 Q4 (NEAT)

2005 ◽  
Vol 623 (1) ◽  
pp. L49-L52 ◽  
Author(s):  
Hideyo Kawakita ◽  
Jun-ichi Watanabe ◽  
Reiko Furusho ◽  
Tetsuharu Fuse ◽  
Daniel C. Boice
Keyword(s):  
Nuclear Spin ◽  
Spin Temperature

Nuclear spin temperature of ammonia in Comet 9P/Tempel 1 before and after the Deep Impact event

Icarus ◽  
2007 ◽  
Vol 187 (1) ◽  
pp. 272-275 ◽  
Author(s):  
Hideyo Kawakita ◽  
Emmanuel Jehin ◽  
Jean Manfroid ◽  
Damien Hutsemékers
Keyword(s):  
Nuclear Spin ◽  
Impact Event ◽  
Spin Temperature ◽  
Deep Impact ◽  
Before And After

scholarly journals Nuclear Spin Resonance Induced by Radio Frequency Electric Field

2010 ◽  
Author(s):  
N. Kumada ◽  
T. Kamada ◽  
Y. Hirayama ◽  
S. Miyashita ◽  
T. Fujisawa ◽  
...  
Keyword(s):  
Electric Field ◽  
Radio Frequency ◽  
Nuclear Spin ◽  
Spin Resonance ◽  
Frequency Electric Field

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

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Mladen Kotur ◽  
Daniel O. Tolmachev ◽  
Valentina M. Litvyak ◽  
Kirill V. Kavokin ◽  
Dieter Suter ◽  
...  
Keyword(s):  
Quantum Well ◽  
Nuclear Spin ◽  
Optical Pumping ◽  
Larmor Frequency ◽  
Spin Splitting ◽  
Magnetic Field Direction ◽  
Nuclear Spins ◽  
Spin Temperature ◽  
Adiabatic Demagnetization ◽  
Selective Cooling

AbstractThe 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.

scholarly journals Breakdown of the nuclear-spin-temperature approach in quantum-dot demagnetization experiments

2009 ◽  
Vol 5 (6) ◽  
pp. 407-411 ◽  
Author(s):  
P. Maletinsky ◽  
M. Kroner ◽  
A. Imamoglu
Keyword(s):  
Quantum Dot ◽  
Nuclear Spin ◽  
Spin Temperature
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