New Aspects of Crystal Growth of Solid ^4He Studied by Acoustic Wave(<Special Topics>New Frontiers of Quantum Fluids and Solids)
スポンサーリンク
概要
- 論文の詳細を見る
The new aspects of crystal growth in solid ^4He at low temperatures are revealed by manipulating the crystal with a radiation pressure of acoustic waves. The acoustic radiation pressure is generally a tiny nonlinear effect, but it has given unexpected effect on the surface of ^4He owing to the markedly high growth rate of the crystal. Radiation pressure induces crystallization or melting. Owing to the strong temperature dependences of the growth rate of an atomically rough surface, which increases divergingly towards T=0, and the numerical value of the ratio of the sound velocities in both phases, the crystal melts at high temperatures when the sound wave is applied from the solid side, while it grows at low temperatures under the same conditions. We found a new type of growth mechanism of a c-facet driven by a strong radiation pressure. The growth rate of a c-facet was found to be much higher than the conventional screw-dislocation-mediated mechanism. Theoretical analysis that treated elementary steps as quantum mechanical quasi-particles reproduced the observed important feasures. The superflow around steps was taken into account as the kinetic energy of the steps. Finally, it was demonstrated that the use of radiation pressure enables the creation of negative crystals or superfluid bubbles in the crystal. Various interesting motions and shapes of the negative crystal were observed and interpreted using a simple model.
- 社団法人日本物理学会の論文
- 2008-11-15
著者
-
OKUDA Yuichi
Department of Applied Physics, Tokyo Institute of Technology
-
NOMURA Ryuji
Department of Condensed Matter Physics, Tokyo Institute of Technology
-
Nomura Ryuji
Department Of Anatomy Fujita Health University School Of Medicine
-
Nomura Ryuji
Department Of Condensed Matter Physics Tokyo Insitute Of Technology
-
Okuda Yuichi
Department Of Condensed Matter Physics Tokyo Insitute Of Technology
-
Okuda Yuichi
Department Of Applied Physics Faculty Of Science Tokyo Institute Of Technology
関連論文
- Facet Growth of ^4He Crystal Induced by Acoustic Waves(Condensed Matter : Structure, Mechanical and Thermal Properties)
- Critical Current Densities and Irreversibility Fields of High Temperature Superconductors Sr_2Ca_2Cu_3O_ and Sr_2Ca_Cu_nO_F_ (n=2,3)
- Critical Current Densities and Irreversibility Fields of High T_c Superconductors, GaSr_2Ca_2Cu_3O_9 and BSr_2Ca_Cu_nO_ (n=3, 4)
- Observation of the Interfacial Wave Propagating at Superfluid-Normal Interface of Helium-4
- Effective Utilization of Horseradish and Wasabi by Treatment with Supercritical Carbon Dioxide
- Brewing of Sake from Rice and Rice-Koji Defatted by Supercritical Carbon Dioxide Treatment
- Static Spin Correlations in a Diluted Two-Dimensional Ferromagnet K_2Cu_xZn_F_4 Including the Percolation Vicinity
- One-Dimensional Heisenberg Ferromagnetic Susceptibility Just at the Percolation Threshold for K_2Cu_xZn_F_4
- Critical Temperature of Randomly Diluted Two-Dimensional Heisenberg Ferromagnet, K_2Cu_xZn_F_4
- Anti-calreticulin Antibody Binds to a Membrane Protein in Caveolae
- Caveolae: from a morphological point of view
- New Nonlinear Phenomena in Focused Acoustic Beam in Pressurized Superfluid ^4He
- The Morphological Study of the Muscle Spindle in the EDL Muscle from Three Normal Pigs
- Wavefront Distortion of Acoustic Beam in Pressurized Superfluid ^4He
- Production of Peroxidase with Horseradish Hairy Root Cells in a Two Step Culture System
- II-B-19 Localization of γ-tubulin-like molecule in the mouse duodenal epithelium(THE 45TH ANNUAL MEETING OF THE JAPAN SOCIETY OF HISTOCHEMISTRY AND CYTOCHEMISTRY)
- Preparation of Defatted Mustard by Extraction with Supercritical Carbon Dioxide(Food & Nutrition)
- Physics of Quantum Solid in Microgravity (特集2:微小重力環境を利用した基礎科学研究)
- IIA-27 Human coronavirus 229E enters the cell through caveolae(THE 46TH ANNUAL MEETING OF THE JAPAN SOCIETY OF HISTOCHEMISTRY AND CYTOCHEMISTRY)
- New Aspects of Crystal Growth of Solid ^4He Studied by Acoustic Wave(New Frontiers of Quantum Fluids and Solids)
- Property of Supercurrent Flowing through Superconducting Single-Electron Transistors with Weak Charging Effect
- Pressurized Super fluid ^4He Acoustic Microscopy : Ultrasonic Imaging and Microscopy
- Critical Current Densities and Irreversibility Fields in Pb-Doped and Pb-Free Bi_2Sr_2Ca_2Cu_3O_y Superconductors
- Critical Relaxation Studied by High Frequency Magnetic Susceptibility in Mn (COOCH_3)_2・4H_2O
- Direct Observation of the Critical Slowing Down in Mn (CH_3COO)_2・4H_2O
- An Anomalous Critical Dispersion in a Canted Antiferromagnet, Ni(IO_3)_22H_2O
- Paramagnetic Susceptibility of Mn (CH_3COO)_24H_2O
- Dynamical Aspect of Cristical Fluctuation of a Quasi One-Dimensional Ising-like Ferromagnet (CH_3)_3NHCoCl_3・2H_2O
- High Field Magnetization of a Heisenberg Ferrimagnet Mn (CH_3COO)_2 4H_2O
- Spin Dynamics near the Critical Point in (CH_3NH_3)_2CuCl_4
- Temperature Dependence of Sound Velocity in High-Strength Fiber-Reinforced Plastics
- The Expression of cytokeratin in hepatic stellate cells of the cod
- Macroscopic Quantum Tunneling and Avalanche Size Distribution of He Crystallization in Aerogel
- The C-terminal domain of the adenomatous polyposis coil (Apc) protein is involved in thyroid morphogenesis and function
- Some fine-structural findings on the thyroid gland in Apc^ mice that express a C-terminus lacking truncated Apc
- Surface Majorana Cone of the Superfluid 3He B Phase
- Concentration Dependence of Brownian Motion and the Viscosity of Hemoglobin Solutions
- Identification of DNA-dependent protein kinase catalytic subunit as a novel interaction partner of lymphocyte enhancer factor 1