搜索结果: 1-15 共查到“凝聚态物理学 Gas”相关记录16条 . 查询时间(0.234 秒)
Pseudogap phenomenon in an ultracold Fermi gas with a p-wave pairing interaction
Pseudogap phenomenon in an ultracold Fermi gas with a p-wave pairing interaction
2012/2/27
We investigate single-particle properties of a one-component Fermi gas with a tunable p-wave interaction. Including pairing fluctuations associated with this anisotropic interaction within a $T$-matri...
Phase transition to Bose-Einstein condensation for a Bosonic gas confined in a combined trap
Bose-Einstein condensation Bosonic gas confined
2010/11/22
We present a study of phase transition to macroscopic superfluidity for an ultracold bosonic gas confined in a combined trap formed by a one-dimensional optical lattice and a harmonic potential,focusi...
Grey solitons in a strongly interacting superfluid Fermi Gas
Grey solitons strongly interacting superfluid Fermi Gas
2010/11/24
The Bardeen-Cooper-Schrieffer to Bose-Einstein condensate (BCS to BEC) crossover problem is
solved for stationary grey solitons via the Boguliubov-de Gennes equations at zero temperature.
These cros...
Polarons and Molecules in a Two-Dimensional Fermi Gas
Polarons Molecules Two-Dimensional Fermi Gas
2010/11/23
We study an impurity atom in a two-dimensional Fermi gas using variational wave functions for (i)an impurity dressed by particle-hole excitations (polaron) and (ii) a dimer consisting of the impurity ...
Anisotropic superfluidity in a dipolar Bose gas
Anisotropic superfluidity dipolar Bose gas
2010/11/22
We study the superfluid character of a dipolar Bose-Einstein condensate (DBEC) in a quasi-two
dimensional (q2D) geometry. In particular, we allow for the dipole polarization to have some non-zero pro...
Propagating Waves in a Monolayer of Gas-Fluidized Rods
Propagating Waves Monolayer of Gas-Fluidized Rods
2010/11/22
We report on an observation of propagating compression waves in a quasi-two-dimensional onolayer of apolar granular rods uidized by an up ow of air. The collective wave speed is an order of magnitude ...
A Spectroscopic Method to Measure the Superfluid Fraction of an Ultracold Atomic Gas
Spectroscopic Method Superfluid Fraction of an Ultracold Atomic Gas
2010/11/19
We perform detailed analytical and numerical studies of a recently proposed method for a spectroscopic measurement of the superfluid fraction of an ultracold atomic gas [N. R. Cooper and Z. Hadzibabic...
Magnetotransport and spin dynamics in an electron gas formed at oxide interfaces
Magnetotransport spin dynamics oxide interfaces
2010/11/23
We investigate the spin-dependent transport properties of a two-dimensional electron gas formed
at oxides’ interface in the presence of a magnetic field. We consider several scenarios for the oxides’...
BCS-BEC crossover in a two-dimensional Fermi gas
BCS-BEC crossover two-dimensional Fermi gas
2010/11/23
We investigate the crossover from Bardeen-Cooper-Schrieffer (BCS) superfluidity to Bose-Einstein condensation (BEC) in a two-dimensional Fermi gas at T = 0 using the fixed-node diffusion Monte Carlo m...
Lattice field theory is a useful tool for studying strongly interacting theories in condensed matter physics. A prominent example is the unitary Fermi gas: a two-component system of fermions interacti...
Edge states in two-dimensional electron gas with heterogeneous spin-orbit interaction
Edge states two-dimensional electron gas heterogeneous spin-orbit interaction
2010/11/23
We show that edge states similar to those known for topological insulators exist in two-dimensional electron system with one-band spectrum in the presence of heterogeneous spin-orbit interaction (SOI)...
Low-temperature thermodynamics of the unitary Fermi gas: superfluid fraction, first sound and second sound
Low-temperature thermodynamics of the unitary Fermi gas superfluid fraction first sound second sound
2011/1/10
We investigate the low-temperature thermodynamics of the unitary Fermi gas by introducing a
model based on the zero-temperature spectra of both bosonic collective modes and fermonic singleparticle ex...
采用超临界气体抗溶剂(GAS)技术的半连续静态工艺制备出平均粒径721.9nm的亚微米级ε型六硝基六氮杂异戊兹烷(CL-20),探讨了 工艺条件对CL-20粒径和晶型的影响，测试了CL-20细化前后的冲击波感度和撞击感度。得到制备亚微米级ε型L-20的最佳工艺条件为：压力平均升高速率4.0MPa/ min，溶液初始浓度8g/100mL，系统压力10.5MPa，系统温度5 0℃。亚微米级ε型CL-2...
Absorbing Hydrogen Fluoride Gas to Enhance Crystal Growth（图）
Hydrogen Fluoride Gas Enhance Crystal Growth superconductors optical devices microelectronics
2009/12/15
Two scientists at the U.S. Department of Energy’s (DOE) Brookhaven National Laboratory have developed a method to control the buildup of hydrogen fluoride gas during the growth of precision crystals n...
For the first time, MIT scientists have observed ferromagnetic behavior in an atomic gas, addressing a decades-old question of whether it is possible for a gas to show properties similar to a magnet m...