Viktor Tsepelin
Lancaster University
Tuning forkOpticsPhysicsQuasiparticleVortexQuantum fluidAndreev reflectionMaterials scienceTurbulenceCritical ionization velocitySuperfluidityCondensed matter physicsVibrating wireQuantum turbulenceAtmospheric temperature rangeCrystalMechanicsQuantum mechanicsQuantumResonator
129Publications
16H-index
894Citations
Publications 125
Newest
#1Ilia Golokolenov (Lancaster University)H-Index: 1
#2A. Guthrie (Lancaster University)H-Index: 3
Last. Viktor Tsepelin (Lancaster University)H-Index: 16
view all 5 authors...
Superconducting quantum devices offer numerous applications, from electrical metrology and magnetic sensing to energy-efficient high-end computing and advanced quantum information processing. The key elements of quantum circuits are (single and double) Josephson junctions controllable either by electric current or magnetic field. The voltage control, commonly used in semiconductor-based devices via the electrostatic field effect, would be far more versatile and practical. Hence, the field effect...
Source
#1A. Guthrie (Lancaster University)H-Index: 3
#2Sergey Kafanov (Lancaster University)H-Index: 12
Last. Denis E. Presnov (MSU: Moscow State University)H-Index: 15
view all 9 authors...
Since we still lack a theory of classical turbulence, attention has focused on the conceptually simpler turbulence in quantum fluids. Reaching a better understanding of the quantum case may provide additional insight into the classical counterpart. That said, we have hitherto lacked detectors capable of the real-time, non-invasive probing of the wide range of length scales involved in quantum turbulence. Here we demonstrate the real-time detection of quantum vortices by a nanoscale resonant beam...
Source
#1S. Autti (Lancaster University)H-Index: 11
#2S. L. Ahlstrom (Lancaster University)H-Index: 5
Last. D. E. Zmeev (Lancaster University)H-Index: 2
view all 13 authors...
The ground state of a fermionic condensate is well protected against perturbations in the presence of an isotropic gap. Regions of gap suppression, surfaces and vortex cores which host Andreev-bound states, seemingly lift that strict protection. Here we show that in superfluid 3He the role of bound states is more subtle: when a macroscopic object moves in the superfluid at velocities exceeding the Landau critical velocity, little to no bulk pair breaking takes place, while the damping observed o...
Source
#1S. AuttiH-Index: 11
#2A. M. GuénaultH-Index: 23
Last. A. A. SoldatovH-Index: 5
view all 10 authors...
Understanding the temperature dependence of thermal boundary resistance, or Kapitza resistance, between liquid helium and sintered metal has posed a problem in low temperature physics for decades. In the ballistic regime of superfluid ^{3}e-B, we find the Kapitza resistance can be described via scattering of thermal excitations (quasiparticles) with a macroscopic geometric area, rather than the sintered metal's microscopic area. We estimate that a quasiparticle needs on the order of 1000 coll...
Source
Understanding the temperature dependence of thermal boundary resistance, or Kapitza resistance, between liquid helium and sintered metal has posed a problem in low temperature physics for decades. In the ballistic regime of superfluid 3He-B, we find the Kapitza resistance can be described via scattering of thermal excitations (quasiparticles) with a macroscopic geometric area, rather than the sintered metal's microscopic area. We estimate that a quasiparticle needs on the order of 1000 collision...
#1Richard P. HaleyH-Index: 18
#2S. AuttiH-Index: 11
Last. D. E. ZmeevH-Index: 2
view all 13 authors...
#1S. AuttiH-Index: 11
#2A. GuthrieH-Index: 3
Last. D. E. ZmeevH-Index: 2
view all 9 authors...
#1S. AuttiH-Index: 11
#2Richard P. HaleyH-Index: 18
Last. D. E. ZmeevH-Index: 2
view all 10 authors...
The ground state of a fermionic condensate is well protected against perturbations in the presence of an isotropic gap. Regions of gap suppression, surfaces and vortex cores which host Andreev-bound states, seemingly lift that strict protection. Here we show that the role of bound states is more subtle: when a macroscopic object moves in superfluid ^3e at velocities exceeding the Landau critical velocity, little to no bulk pair breaking takes place, while the damping observed originates from ...
Source
#1A. M. GuénaultH-Index: 23
#2A. GuthrieH-Index: 3
Last. Olivier MailletH-Index: 10
view all 11 authors...
Nanoscale mechanical resonators are widely utilized to provide high sensitivity force detectors. Here we demonstrate that such high quality factor resonators immersed in superfluid \(^4\mathrm{He}\) can be excited by a modulated flux of phonons. A nanosized heater immersed in superfluid \(^4\mathrm{He}\) acts as a source of ballistic phonons in the liquid -- "phonon wind". When the modulation frequency of the phonon flux matches the resonance frequency of the mechanical resonator, the motion of ...
Source
#1S. AuttiH-Index: 11
#2A. M. GuénaultH-Index: 23
Last. A. A. SoldatovH-Index: 5
view all 10 authors...
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