290 citations · 1.4k across the 27 of their papers we have counts for
27 papers
Symmetry properties of superconducting order parameter in SrRuO
Anthony J. Leggett, Ying Liu
Soon after the discovery of superconductivity in Sr2RuO4 (SRO) in 1994, it was conjectured that its order parameter (OP) has a form similar to that realized in the superfluid He-3,…
Resonant confinement of excitonic polariton and ultra-efficient light harvest in artificial photosynthesis
Yong-Cong Chen, Bo Song, Anthony J. Leggett +2
We show that in the recent artificial light-harvesting experiment [Angewandte Chemie Intl. Ed. 55, 2759 (2016)] on organic nanocrystals self-assembled from difluoroboron chromophor…
Towards a Particle-Number Conserving Theory of Majorana Zero Modes in p+ip Superfluids
Yiruo Lin, Anthony J. Leggett
Majorana zero modes are predicted to exist in p+ip (either inherent or effective due to proximity effect) superfluids and are proposed to be used for constructing topological qubit…
Effect of Particle Number Conservation on the Berry Phase Resulting from Transport of a Bound Quasiparticle around a Superfluid Vortex
Yiruo Lin, Anthony J. Leggett
Motivated by understanding Majorana zero modes in topological superfluids in particle-number conserving framework beyond the present framework, we study the effect of particle numb…
Tunnel Splitting in Asymmetric Double Well Potentials: An Improved WKB Calculation
Seyyed M. H. Halataei, Anthony J. Leggett
We present an improved Wentzel-Kramers-Brillouin (WKB) calculation of tunnel splitting in one dimensional asymmetric double well potentials. We show that the tunnel splitting in ge…
Note on the "size" of Schroedinger cats
Anthony J. Leggett
We give some arguments to evaluate the "size" of Schrodinger cat for the flux qubit, which has really different results from ref.[1] Korsbakken et al. [1] J.Korsbakken,F.K.Wilhelm…
Temperature-dependent ellipsometry measurements of partial Coulomb energy in superconducting cuprates
J. Levallois, M. K. Tran, D. Pouliot +8
We performed an experimental study of the temperature and doping dependence of the energy-loss function of the bilayer and trilayer Bi-cuprate family. The primary aim is to obtain…
Random Nonlinear Infinite-Level-System Model for Amorphous Solid Phonon Echo and Saturation Phenomena
Di Zhou, Anthony J. Leggett
The first two successful predictions for amorphous solid experiments by tunneling-two-level-system (TTLS) was phonon echo and saturation phenomena. In this paper by generalizing TT…
A Generic Microscopic Theory for the Universality of TTLS Model Meissner-Berret Ratio in Low-Temperature Glasses
Di Zhou, Anthony J. Leggett
Tunneling-two-level-system (TTLS) model has successfully explained several low-temperature glass universal properties which do not exist in their crystalline counterparts. The coup…
The escape physics of single shot measurement of flux qubit with dcSQUID
Mao-Chuang Yeh, Anthony J. Leggett
In most experiments on flux qubits,the "measurement" is performed by coupling the system to a dc SQUID and recording the distribution of switching currents for the latter;this meas…
The "Tunneling Two-Level Systems" Model of the Low-Temperature Properties of Glasses: Are "Smoking-Gun" Tests Possible?
Anthony James Leggett, Dervis Can Vural
Following a brief review of the "two-level (tunneling) systems" model of the low-temperature properties of amorphous solids ("glasses"), we ask whether it is in fact the unique exp…
BEC-BCS Crossover with Feshbach Resonance for a Three-Hyperfine-Species Model
Guojun Zhu, Anthony J. Leggett
We consider the behavior of an ultracold Fermi gas across a narrow Feshbach resonance, where the occupation of the closed channel may not be negligible. While the corrections to th…
Absence of spontaneous magnetic order of lattice spins coupled to itinerant interacting electrons in one and two dimensions
Daniel Loss, Fabio L. Pedrocchi, Anthony J. Leggett
We extend the Mermin-Wagner theorem to a system of lattice spins which are spin-coupled to itinerant and interacting charge carriers. We use the Bogoliubov inequality to rigorously…
Universal Sound Absorption in Amorphous Solids: A Theory of Elastically Coupled Generic Blocks
Dervis C. Vural, Anthony J. Leggett
Glasses are known to exhibit quantitative universalities at low temperatures, the most striking of which is the ultrasonic attenuation coefficient 1/Q. In this work we develop a th…
Spin polarization of half-quantum vortex in systems with equal spin pairing
Victor Vakaryuk, Anthony J. Leggett
We present a variational analysis for a half-quantum vortex (HQV) in the equal-spin-pairing superfluid state which, under suitable conditions, is believed to be realized in Sr2RuO4…
Universal Properties of the Ultra-Cold Fermi Gas
Shizhong Zhang, Anthony J. Leggett
We present some general considerations on the properties of a two-component ultra-cold Fermi gas along the BEC-BCS crossover. It is shown that the interaction energy and the ground…
Phase dynamics after connection of two separate Bose-Einstein condensates
I. Zapata, F. Sols, A. J. Leggett
We study the dynamics of the relative phase following the connection of two independently formed Bose-Einstein condensates. Dissipation is assumed to be due to the creation of quas…
Condensation Energy and High Tc Superconductivity
D. van der Marel, A. J. Leggett, J. W. Loram +1
From an analysis of the specific heat of one of the cuprate superconductors it is shown, that even if a large part of the experimental specific heat associated with the superconduc…
Sum rule analysis of Umklapp processes and Coulomb energy: application to cuprate superconductivity
Misha Turlakov, Anthony J. Leggett
The third moment frequency sum rule for the density-density correlation function is rederived in the presence of Umklapp processes. Upper and lower bounds on the electron-electron…
The Josephson plasmon as a Bogoliubov quasiparticle
G. -S. Paraoanu, S. Kohler, F. Sols +1
We study the Josephson effect in alkali atomic gases within the two-mode approximation and show that there is a correspondence between the Bogoliubov description and the harmonic l…
Interlayer c-axis transport in the normal state of cuprates
Misha Turlakov, Anthony J. Leggett
A theoretical model of c-axis transport properties in cuprates is proposed. Inter-plane and in-plane charge fluctuations make hopping between planes incoherent and diffusive (the i…
Ground-State Properties of a Rotating Bose-Einstein Condensate with Attractive Interaction
Masahito Ueda, Anthony J. Leggett
The ground state of a rotating Bose-Einstein condensate with attractive interaction in a quasi-one-dimensional torus is studied in terms of the ratio of the mean-field interact…
Free Energy of an Inhomogeneous Superconductor: a Wave Function Approach
Ioan Kosztin, Simon Kos, Michael Stone +1
A new method for calculating the free energy of an inhomogeneous superconductor is presented. This method is based on the quasiclassical limit (or Andreev approximation) of the Bog…
Macroscopic Quantum Tunneling of a Bose-Einstein Condensate with Attractive Interaction
Masahito Ueda, Anthony J. Leggett
A Bose-Einstein condensate with attractive interaction can be metastable if it is spatially confined and if the number of condensate bosons is below a certain critical value…