The discovery could help make electronics faster and more energy efficient.
Researchers at the University of Minnesota Twin Cities have found a new way to change how a metal behaves electronically by controlling atomic-level interactions at the boundary where two materials meet.
The study, published in Nature Communications, shows that interfacial polarization can shift the surface work function of metallic ruthenium dioxide (RuO2) by more than 1 electron volt (eV), simply by changing film thickness at the nanometer scale.
“We often think of polarization as something that belongs to insulators or ferroelectrics—not metals,” said Bharat Jalan, professor and Shell Chair in the Department of Chemical Engineering and Materials Science at the University of Minnesota. “Our work shows that, through careful interface design, you can stabilize polarization in a metallic system and use it as a knob to tune electronic properties. This opens an entirely new way of thinking about controlling metals.”
Atomic packing changes conductivity
The effect becomes strongest when the metal film is about 4 nanometers thick, roughly the width of a single strand of DNA. At that scale, the metal changes from a “stretched” arrangement imposed by the underlying material to a more “relaxed” structure. That shift shows that the way atoms are physically arranged can directly and measurably influence how a metal conducts and responds to electricity.
“This was surprising,” said Seung Gyo Jeong, first author of the study and a researcher in Jalan’s group. “We expected subtle interface effects, but not such a large and controllable change in work function. Being able to visualize the polar displacements at the atomic scale and connect them directly to electronic measurements was especially exciting.”
The discovery goes beyond basic physics and could help guide the development of future electronic, catalytic, and quantum devices.
Reference: “Strain-stabilized interfacial polarization tunes work function over 1 eV in RuO2/TiO2 heterostructures” by Seung Gyo Jeong, Bonnie Y. X. Lin, Mengru Jin, In Hyeok Choi, Seungjun Lee, Zhifei Yang, Sreejith Nair, Rashmi Choudhary, Juhi Parikh, Anand Santhosh, Matthew Neurock, Kelsey A. Stoerzinger, Jong Seok Lee, Tony Low, Qing Tu, James M. LeBeau and Bharat Jalan, 9 February 2026, Nature Communications.
DOI: 10.1038/s41467-026-69200-x
The research was funded by the U.S. Department of Energy and the Air Force Office of Scientific Research.
Never miss a breakthrough: Join the SciTechDaily newsletter.
Follow us on Google and Google News.
2 Comments
The new discoveries of all every-translational types of ten-planets (BIO-SPACE)within realms of black holes/asteroids/stars/chemicals into general space-voyages are all ;An increased inner-cores of new chemicals in the space effectiveness are descriptions are into theories of all developed issues enincreased in the injections into a voyage of increased by space into these solar-system is infinity due to all-divisons often is ‘the thesis’ of issues are due into the following for the next generations my dream is peace/love/and eventually humanity is the following classifications noted by every-thing not every-time to yourself but otherwise are not descriptions but remains increased into the following “thesis” areas of mathematical of features are completed by all noted increased everything-thought-out are descriptions the following areas nearest ‘BIO-ORBIT(s) is combinations not completed by incredible areas common-sense of basic science is the following are infinity noted by exercise of science sports-execrise into assumptions are general issues are of completed
’emphasis’ but areas are simple accumulations are not all sequences yet a world-into these completed assumes between amounts are collections due to these assumptions are developmental issues into the following due -tom -all “every-thing” all reality is all series in-depths-of-massive types of measurements due to assumptions process “never”perspectives associations are complex into these questions assumptions.The following completes all mathe/science/and all knowledge a simple areas of all summarizes after-into these all forms of increased includes interwined massive-descriptions are developed results are descriptions are comp
leted by each/ everthing /everywhere the following each completed by evenly its own due to all series of even-thoughts of grace into the following issues are depends a sources.
thanks for this