Question: Who, along with their team of British physicists identified the electron in 1897?
About the article "Electron", section "Abstract".

Candidate passages:
From atoms to nucleons.
First subatomic particles.
However, near the end of 19th century, physicists discovered that Dalton's atoms are not, in fact, the fundamental particles of nature, but conglomerates of even smaller particles.
Electron was discovered between 1879 and 1897 in works of William Crookes, Arthur Schuster, J. J. Thomson, and other physicists; its charge was carefully measured by Robert Andrews Millikan and Harvey Fletcher in their oil drop experiment of 1909.
Physicists theorized that negatively-charged electrons are constituent part of "atoms", along with some (yet unknown) positively-charged substance, and it was later confirmed.
Electron became the first elementary, truly fundamental particle discovered.
Studies of the "radioactivity", that soon revealed the phenomenon of radioactive decay, provided another argument against considering chemical elements as fundamental nature's elements.
Despite these discoveries, the term "atom" stuck to Dalton's (chemical) atoms and now denotes the smallest particle of a chemical element, not something really indivisible. 
The electron (symbol: ) is a subatomic particle with a negative elementary electric charge.
Electrons belong to the first generation of the lepton particle family, and are generally thought to be elementary particles because they have no known components or substructure.
The electron has a mass that is approximately 1/1836 that of the proton.
Quantum mechanical properties of the electron include an intrinsic angular momentum (spin) of a half-integer value in units of "ħ", which means that it is a fermion.
Being fermions, no two electrons can occupy the same quantum state, in accordance with the Pauli exclusion principle.
Electrons also have properties of both particles and waves, and so can collide with other particles and can be diffracted like light.
Experiments with electrons best demonstrate this duality because electrons have a tiny mass.
Many physical phenomena involve electrons in an essential role, such as electricity, magnetism, and thermal conductivity, and they also participate in gravitational, electromagnetic and weak interactions.
An electron in space generates an electric field surrounding it.
An electron moving relative to an observer generates a magnetic field.
External magnetic fields deflect an electron.
Electrons radiate or absorb energy in the form of photons when accelerated.
Laboratory instruments are capable of containing and observing individual electrons as well as electron plasma using electromagnetic fields, whereas dedicated telescopes can detect electron plasma in outer space.
Electrons have many applications, including electronics, welding, cathode ray tubes, electron microscopes, radiation therapy, lasers, gaseous ionization detectors and particle accelerators.
Interactions involving electrons and other subatomic particles are of interest in fields such as chemistry and nuclear physics.
The Coulomb force interaction between positive protons inside atomic nuclei and negative electrons composes atoms.
Ionization or changes in the proportions of particles changes the binding energy of the system.
The exchange or sharing of the electrons between two or more atoms is the main cause of chemical bonding.
British natural philosopher Richard Laming first hypothesized the concept of an indivisible quantity of electric charge to explain the chemical properties of atoms in 1838; Irish physicist George Johnstone Stoney named this charge 'electron' in 1891, and J. J. Thomson and his team of British physicists identified it as a particle in 1897.
Electrons can also participate in nuclear reactions, such as nucleosynthesis in stars, where they are known as beta particles.
Electrons may be created through beta decay of radioactive isotopes and in high-energy collisions, for instance when cosmic rays enter the atmosphere.
The antiparticle of the electron is called the positron; it is identical to the electron except that it carries electrical and other charges of the opposite sign.
When an electron collides with a positron, both particles may be totally annihilated, producing gamma ray photons. 
The first lepton identified was the electron, discovered by J.J. Thomson and his team of British physicists in 1897.
Then in 1930 Wolfgang Pauli postulated the electron neutrino to preserve conservation of energy, conservation of momentum, and conservation of angular momentum in beta decay.
Pauli theorized that an undetected particle was carrying away the difference between the energy, momentum, and angular momentum of the initial and observed final particles.
The electron neutrino was simply called the neutrino, as it was not yet known that neutrinos came in different flavours (or different "generations").
Nearly 40 years after the discovery of the electron, the muon was discovered by Carl D. Anderson in 1936.
Due to its mass, it was initially categorized as a meson rather than a lepton.
It later became clear that the muon was much more similar to the electron than to mesons, as muons do not undergo the strong interaction, and thus the muon was reclassified: electrons, muons, and the (electron) neutrino were grouped into a new group of particles – the leptons.
In 1962 Leon M. Lederman, Melvin Schwartz and Jack Steinberger showed that more than one type of neutrino exists by first detecting interactions of the muon neutrino, which earned them the 1988 Nobel Prize, although by then the different flavours of neutrino had already been theorized.
The tau was first detected in a series of experiments between 1974 and 1977 by Martin Lewis Perl with his colleagues at the SLAC LBL group.
Like the electron and the muon, it too was expected to have an associated neutrino.
The first evidence for tau neutrinos came from the observation of "missing" energy and momentum in tau decay, analogous to the "missing" energy and momentum in beta decay leading to the discovery of the electron neutrino.
The first detection of tau neutrino interactions was announced in 2000 by the DONUT collaboration at Fermilab, making it the latest particle of the Standard Model to have been directly observed, apart from the Higgs boson, which probably has been discovered in 2012.
Although all present data is consistent with three generations of leptons, some particle physicists are searching for a fourth generation.
The current lower limit on the mass of such a fourth charged lepton is , while its associated neutrino would have a mass of at least . 
In 1925, Dutch physicists George Eugene Uhlenbeck and Samuel Goudsmit co-discovered the concept of electron spin, which posits an intrinsic angular momentum for all electrons. 
The elementary charge-to-electron mass quotient, formula_2, is a quantity in experimental physics.
It bears significance because the electron mass "m"e is difficult to measure directly, and is instead derived from measurements of the elementary charge e and formula_2.
It also has historical significance; the "Q"/"m" ratio of the electron was successfully calculated by J. J. Thomson in 1897—and more successfully by Dunnington, which involves the angular momentum and deflection due to a perpendicular magnetic field.
Thomson's measurement convinced him that cathode rays were particles, which were later identified as electrons, and he is generally credited with their discovery.
The 2006 CODATA recommended value is formula_2 = .
CODATA refers to this as the electron charge-to-mass quotient, but ratio is still commonly used.
There are two other common ways of measuring the charge to mass ratio of an electron, apart from Thomson and Dunnington's methods.
The Magnetron Method: Using a GRD7 Valve (Ferranti valve), electrons are expelled from a hot tungsten-wire filament towards an anode.
The electron is then deflected using a solenoid.
From the current in the solenoid and the current in the Ferranti Valve, e/m can be calculated.
Fine Beam Tube Method: A heater heats a cathode, which emits electrons.
The electrons are accelerated through a known potential, so the velocity of the electrons is known.
The beam path can be seen when the electrons are accelerated through a helium (He) gas.
The collisions between the electrons and the helium gas produce a visible trail.
A pair of Helmholtz coils produces a uniform and measurable magnetic field at right angles to the electron beam.
This magnetic field deflects the electron beam in a circular path.
By measuring the accelerating potential (volts), the current (amps) to the Helmholtz coils, and the radius of the electron beam, e/m can be calculated.