TY - JOUR

T1 - A spin laser? The persistent processing domain in superfluid He-3-B at ultralow temperatures.

AU - Fisher, Shaun N.

AU - Guénault, A.M.

AU - Pickett, George R.

AU - Skyba, P.

PY - 2003/5

Y1 - 2003/5

N2 - We discuss various properties of the persistent precessing domain (PPD, formerly PIS) in superfluid He-3-B. These exotic NMR domains can only be excited at ultralow temperatures. At the lowest temperatures they freely precess for periods up to 2000 s. We identify various behaviors depending on the texture and magnetic field profile. We can create the domains with small generating pulses or excite them continuously but only with an excitation frequency higher than that of the domain precession. Remarkably, we can excite and sustain the precession by the application of white noise. Thus,. unusually, the coherent domain can extract energy from an incoherent energy source.

AB - We discuss various properties of the persistent precessing domain (PPD, formerly PIS) in superfluid He-3-B. These exotic NMR domains can only be excited at ultralow temperatures. At the lowest temperatures they freely precess for periods up to 2000 s. We identify various behaviors depending on the texture and magnetic field profile. We can create the domains with small generating pulses or excite them continuously but only with an excitation frequency higher than that of the domain precession. Remarkably, we can excite and sustain the precession by the application of white noise. Thus,. unusually, the coherent domain can extract energy from an incoherent energy source.

KW - superfluid He-3

KW - NMR

KW - ultralow temperatures

U2 - 10.1016/S0921-4526(02)01886-0

DO - 10.1016/S0921-4526(02)01886-0

M3 - Journal article

VL - 329

SP - 80

EP - 81

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

SN - 0921-4526

IS - 1

ER -