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Quantum Materials

Rice University theorists have calculated flexoelectric effects in double-walled carbon nanotubes. The electrical potential (P) of atoms on either side of a graphene sheet (top) are identical, but not when the sheet is curved into a nanotube. Double-walled nanotubes (bottom) show unique effects as band gaps in inner and outer tubes are staggered. (Credit: Yakobson Research Group/Rice University)

Double-walled nanotubes have electro-optical advantages

August 31, 2021

Rice theorists find that flexoelectric effects in double-walled carbon nanotubes could be highly useful for photovoltaic applications.

Electrical conduction on the surface of the topological insulator bismuth iodide (pink and green arrows) transitions from the 2D sides (left) to the 1D edges of those sides (right) when the material is cooled to a critical temperature around 80 degrees Fahrenheit. Image courtesy of Jianwei Huang/Rice University

Physicists find room-temperature, 2D-to-1D topological transition

August 24, 2021

Physicists have discovered a room-temperature transition between 1D and 2D electrical conduction states in the topological insulator bismuth iodide.

RAMBO

Odd angles make for strong spin-spin coupling

June 18, 2021

HOUSTON – (May 25, 2021) – Sometimes things are a little out of whack, and it turns out to be exactly what you need.

Smiling Professor

Pristine quantum criticality found

May 24, 2021

U.S. and Austrian physicists searching for evidence of quantum criticality in topological materials have found one of the most pristine examples yet observed.

Image for the $1 million Solar Desalination Prize.

Rice team vying for $1 million Solar Desalination Prize

April 15, 2021

A Rice team's clever design uses the power of the sun to make fresh water from saltwater, even at night.

Rice University theoretical physicists Hsin-Hua Lai, Qimiao Si and Sarah Grefe.

Quantum quirk yields giant magnetic effect, where none should exist

February 26, 2021

In a twist befitting the strange nature of quantum mechanics, physicists have discovered the Hall effect — a characteristic change in the way electricity is conducted in the presence of a magnetic field — in a nonmagnetic quantum material to which no magnetic field was applied.

The image shows the crystal structure of a MoTe2|PtS2 heterobilayer with isocharge plots from a model created at Rice University. When the materials are stacked together, mirror symmetry is broken and there is a charge transfer that creates an intrinsic electric field. This field is responsible for Rashba-type spin-splitting shown by the band structure at right, where the spin is perpendicular to momentum. (Credit: Sunny Gupta/Rice University)

Theory could accelerate push for spintronic devices

February 25, 2021

A theory by Rice scientists could boost spintronics, a key to creating faster and more powerful electronic devices, including quantum computers.

Aditya Mohite (Photo by Jeff Fitlow)

Research could dramatically lower cost of electron sources

February 1, 2021

Rice University engineers have discovered technology that could slash the cost of semiconductor electron sources, key components in devices ranging from night-vision goggles and low-light cameras to electron microscopes and particle accelerators.

Rice University’s optical detection system reveals small structural defects in a gold nanowire that may appear to be a perfect crystal under a scanning electron microscope. The discovery has implications for making better thin-film electronic devices. (Credit: Charlotte Evans/Rice University)

Boundaries no barrier for thermoelectricity

September 8, 2020

Rice researchers show how thermoelectricity hurdles some defects, but not others, in gold nanowires. The discovery has implications for making better thin-film electronic devices.

Rice University's Zhiyuan Wang is a graduate student in physics and astronomy

Quantum leap for speed limit bounds

September 2, 2020

Nature's speed limits aren't posted on road signs, but Rice University physicists have discovered a new way to deduce them that is better — infinitely better, in some cases — than prior methods.

Welch Foundation

Largest gift in Rice history establishes The Welch Institute

September 2, 2020

The Robert A. Welch Foundation announces the largest single gift in the history of Rice University, $100 million, to establish The Welch Institute for world-leading advanced materials research.

A photo and infographic of the RAMBO system

Rice’s RAMBO-II: A sequel better than the original

August 24, 2020

First-of-its-kind spectrometer is getting stronger magnets, wider range of lasers.

Rice University physicists discover that plasmonic metals can be prompted to produce “hot carriers” that in turn emit unexpectedly bright light in nanoscale gaps between electrodes. The phenomenon could be useful for photocatalysis, quantum optics and optoelectronics. (Credit: Illustration by Longji Cui and Yunxuan Zhu/Rice University)

Rice lab’s bright idea is pure gold

June 29, 2020

Physicists discover plasmonic metals can produce “hot carriers” that emit unexpectedly bright light in nanoscale gaps between electrodes.

Rice scientists found certain combinations of weakly bound 2D materials let holes and electrons combine into excitons at the materials’ ground state. Courtesy of the Yakobson Research Group

Excitons form superfluid in certain 2D combos

June 15, 2020

Mixing and matching computational models of 2D materials led scientists at Rice University to the realization that excitons can be manipulated in new and useful ways.

Rice University physicist Ming Yi with her lab's angle-resolved photoemission spectroscope

Rice U. physicist Ming Yi wins coveted Moore Foundation grant

May 28, 2020

Rice physicist Ming Yi won $1.6 million from the Gordon and Betty Moore Foundation for high-risk, high-reward research into quantum materials.

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