Han Li

San Francisco Mayor London Breed said Tuesday she will sign legislation to expand rent control to thousands of additional units — but only if voters pass the statewide ballot measure Proposition 33.

When Adlah Chisti first saw Kamala Harris on TV 20 years ago, she felt a jolt of recognition: Here was a politician whose Indian first name and skin color reminded her of her own.

San Francisco found someone willing to take the reins from the city's public schools chief who abruptly quit in the middle of a historic crisis, a

The recent discovery of high- T csuperconductivity near 80 K in the bilayer nickelate L a 3⁢ N i 2⁢ O 7has attracted widespread attention. The prerequisite to understanding the unconventional superconductivity in L a 3⁢ N i 2⁢ O 7is the determination of the electronic properties, such as the band structure and possible correlation effect. Here, we report a set of data on single-particle tunneling measurements on single crystals at ambient pressure. A gaplike feature was observed in the tunneling spectra at low energies around the Fermi energy. The spectrum looks roughly symmetric with gap edges at about and meV. We attribute this gaplike feature to two alternative origins: either reflecting the bonding and antibonding bands derived from the Ni- orbital, or a mixed contribution from a density wave gap and these two bands. Meanwhile, a finite density of states remains even in the gapped region, which is thought to be the vestige contribution of the orbital. Furthermore, it is found that the density of states is suppressed in a wide energy range with a sharp rise at about eV, indicating a general correlation effect. Theoretical calculations give partial consistency with the experimental observations. Our results provide important information to understand the electronic states of at ambient pressure.

Two weeks before Election Day, Mayor London Breed's opponents are gaining momentum, new polling finds.

The interaction between the young students and city officials turned into a mini-press conference.

Even for San Francisco political insiders, the city's vast network of commissions and advisory boards — estimated at over 130 —can be bewildering.

Starting Oct. 1, Daniel Lurie's smiling face has appeared every day on the front page of Sing Tao Daily, a major Chinese-language newspaper in San Francisco.

The fate of a coastal roadway has unexpectedly become one of the most divisive political fights this election season in San Francisco, turning the sleepy west side into a campaign battleground.

You may have heard about the school closure chaos, but an important election with key influence on the school district has gone largely under the radar with little media attention this year.